- dovecot - dovecot.org

dovecot.conf from problem installation
by Steve Matzura 22 Oct '19

22 Oct '19

*** dovecot.conf *** ## Dovecot configuration file # If you're in a hurry, see http://wiki2.dovecot.org/QuickConfiguration # "doveconf -n" command gives a clean output of the changed settings. Use it # instead of copy&pasting files when posting to the Dovecot mailing list. # '#' character and everything after it is treated as comments. Extra spaces # and tabs are ignored. If you want to use either of these explicitly, put the # value inside quotes, eg.: key = "# char and trailing whitespace " # Most (but not all) settings can be overridden by different protocols and/or # source/destination IPs by placing the settings inside sections, for example: # protocol imap { }, local 127.0.0.1 { }, remote 10.0.0.0/8 { } # Default values are shown for each setting, it's not required to uncomment # those. These are exceptions to this though: No sections (e.g. namespace {}) # or plugin settings are added by default, they're listed only as examples. # Paths are also just examples with the real defaults being based on configure # options. The paths listed here are for configure --prefix=/usr # --sysconfdir=/etc --localstatedir=/var # Enable installed protocols !include_try /usr/share/dovecot/protocols.d/*.protocol # A comma separated list of IPs or hosts where to listen in for connections. # "*" listens in all IPv4 interfaces, "::" listens in all IPv6 interfaces. # If you want to specify non-default ports or anything more complex, # edit conf.d/master.conf. #listen = *, :: # Base directory where to store runtime data. #base_dir = /var/run/dovecot/ # Name of this instance. In multi-instance setup doveadm and other commands # can use -i <instance_name> to select which instance is used (an alternative # to -c <config_path>). The instance name is also added to Dovecot processes # in ps output. #instance_name = dovecot # Greeting message for clients. #login_greeting = Dovecot ready. # Space separated list of trusted network ranges. Connections from these # IPs are allowed to override their IP addresses and ports (for logging and # for authentication checks). disable_plaintext_auth is also ignored for # these networks. Typically you'd specify your IMAP proxy servers here. #login_trusted_networks = # Space separated list of login access check sockets (e.g. tcpwrap) #login_access_sockets = # With proxy_maybe=yes if proxy destination matches any of these IPs, don't do # proxying. This isn't necessary normally, but may be useful if the destination # IP is e.g. a load balancer's IP. #auth_proxy_self = # Show more verbose process titles (in ps). Currently shows user name and # IP address. Useful for seeing who are actually using the IMAP processes # (eg. shared mailboxes or if same uid is used for multiple accounts). #verbose_proctitle = no # Should all processes be killed when Dovecot master process shuts down. # Setting this to "no" means that Dovecot can be upgraded without # forcing existing client connections to close (although that could also be # a problem if the upgrade is e.g. because of a security fix). #shutdown_clients = yes # If non-zero, run mail commands via this many connections to doveadm server, # instead of running them directly in the same process. #doveadm_worker_count = 0 # UNIX socket or host:port used for connecting to doveadm server #doveadm_socket_path = doveadm-server # Space separated list of environment variables that are preserved on Dovecot # startup and passed down to all of its child processes. You can also give # key=value pairs to always set specific settings. #import_environment = TZ ## ## Dictionary server settings ## # Dictionary can be used to store key=value lists. This is used by several # plugins. The dictionary can be accessed either directly or though a # dictionary server. The following dict block maps dictionary names to URIs # when the server is used. These can then be referenced using URIs in format # "proxy::<name>". dict { #quota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext #expire = sqlite:/etc/dovecot/dovecot-dict-sql.conf.ext } # Most of the actual configuration gets included below. The filenames are # first sorted by their ASCII value and parsed in that order. The 00-prefixes # in filenames are intended to make it easier to understand the ordering. !include conf.d/*.conf # A config file can also tried to be included without giving an error if # it's not found: !include_try local.conf log_path = /var/log/dovecot.log passdb { driver = static args = noauthenticate temp_user=%u user=%Ln } passdb { driver = pam } passdb { driver = static args = noautenticate user=%{passdb:temp_user} skip = unauthenticated } *** End *** If I try to start the daemon, or even attempt 'dovecot -n output', I get: # 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf line 107: Expecting '{' Line 107 is where the first passdb block begins. If I remove the three passdb blocks--everything below line 106--I get a clean startup, but the log looks like this: *** Begin *** Oct 22 12:22:04 auth-worker(13722): Info: pam(yourvoice(a)theglobalvoice.info,108.41.57.11,<BXn+2H6VKelsKTkL>): pam_authenticate() failed: Authentication failure (password mismatch?) (given password: redacted) Oct 22 12:22:06 auth: Debug: client passdb out: FAIL 1 user=yourvoice(a)theglobalvoice.info Oct 22 12:22:06 auth: Debug: client in: AUTH 2 PLAIN service=imap secured session=BXn+2H6VKelsKTkL lip=95.142.174.193 rip=108.41.57.11 lport=993 rport=59689 local_name=mail.theglobalvoice.info resp=AHlvdXJ2b2ljZUB0aGVnbG9iYWx2b2ljZS5pbmZvAFRoJEJvYTQxMFlu (previous base64 data may contain sensitive data) Oct 22 12:22:10 auth-worker(13722): Debug: pam(yourvoice(a)theglobalvoice.info,108.41.57.11,<BXn+2H6VKelsKTkL>): lookup service=dovecot Oct 22 12:22:10 auth-worker(13722): Debug: pam(yourvoice(a)theglobalvoice.info,108.41.57.11,<BXn+2H6VKelsKTkL>): #1/1 style=1 msg=Password: Oct 22 12:22:12 auth-worker(13722): Info: pam(yourvoice(a)theglobalvoice.info,108.41.57.11,<BXn+2H6VKelsKTkL>): pam_authenticate() failed: Authentication failure (password mismatch?) (given password: redacted) Oct 22 12:22:14 auth: Debug: client passdb out: FAIL 2 user=yourvoice(a)theglobalvoice.info Oct 22 12:22:14 imap-login: Debug: SSL alert: close notify [108.41.57.11] Oct 22 12:22:14 imap-login: Debug: SSL alert: close notify [108.41.57.11] Oct 22 12:22:14 imap-login: Info: Disconnected (auth failed, 2 attempts in 12 secs): user=<yourvoice(a)theglobalvoice.info>, method=PLAIN, rip=108.41.57.11, lip=95.142.174.193, TLS, session=<BXn+2H6VKelsKTkL>

1 0

dovecot disk space settings
by marcel bendler 22 Oct '19

22 Oct '19

Hi, is there an option to leave some disk space free? Let's say, don't store new mails if the storage mount point has less than 1% free disk space. What's the way to go? I don't want to restrict each mailbox size. It's just to prevent running out space completely. Thanks! Best regards, Marcel

4 3

More on problems with new install
by Steve Matzura 22 Oct '19

22 Oct '19

Sorry for having lost the original chain of this problem. It's been a very long day. New output from 'dovecot -n output', including the contents of dovecot.conf, conf.d/10-master.conf, conf.d/10-mail.conf and conf.d/10-ssl.conf: # 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) # OS: Linux 4.15.0-64-generic x86_64 Ubuntu 18.04.3 LTS ext4 auth_debug = yes auth_debug_passwords = yes first_valid_gid = 109 first_valid_uid = 105 last_valid_gid = 109 last_valid_uid = 105 log_path = /var/log/dovecot.log mail_debug = yes mail_gid = postfix mail_location = maildir:/var/mail/vmail/%d/%n mail_uid = postfix namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } protocols = " imap lmtp" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { group = postfix mode = 0666 user = postfix } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_min_avail = 0 service_count = 1 } service lmtp { unix_listener lmtp { mode = 0666 } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } service pop3 { process_limit = 1024 } ssl = required ssl_cert = </etc/ssl/private/tgv2018.crt ssl_key = # hidden, use -P to show it userdb { driver = passwd } verbose_ssl = yes The two key files are where it says they are, although the hidden one isn't shown, it's there and properly owned and permissioned. Here's the only thing from tailing the log: Oct 22 07:24:50 master: Info: Dovecot v2.2.33.2 (d6601f4ec) starting up for imap, lmtp (core dumps disabled) This may help - from a message delivery failure email: *** Begin *** Message Delivery Failure This is an automatically generated Delivery Status Notification. Delivery to the following recipients failed permanently: * rock(a)theglobalvoice.info Reason: There was an error while attempting to deliver your message with [Subject: "Testing again"] to rock(a)theglobalvoice.info. MTA p3plsmtpa11-09.prod.phx3.secureserver.net received this response from the destination host IP - 95.142.174.193 - 550 , 550 5.1.1 <rock(a)theglobalvoice.info>: Recipient address rejected: User unknown in local recipient table . Reporting-MTA: dns; p3plsmtpa11-09.prod.phx3.secureserver.net [68.178.252.101] Received-From-MTA: dns; [192.168.1.140] [108.41.57.11] Arrival-Date: Mon, 21 Oct 2019 23:39:25 -0700 Final-recipient: rfc822; rock(a)theglobalvoice.info Diagnostic-Code: smtp; 550 5.1.1 <rock(a)theglobalvoice.info>: Recipient address rejected: User unknown in local recipient table Last-attempt-Date: Tue, 22 Oct 2019 00:23:38 -0700 Received: from [192.168.1.140] ([108.41.57.11]) by :SMTPAUTH: with ESMTPSA id MnpFiaSdxUnHgMnpFiYE6m; Mon, 21 Oct 2019 23:39:25 -0700 To: rock(a)theglobalvoice.info From: Steve Matzura <number6(a)noisynotes.com> Subject: Testing again Message-ID: <61b4f0c2-89fa-c4de-8288-871a8708f2d0(a)noisynotes.com> Date: Tue, 22 Oct 2019 02:39:26 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-CMAE-Envelope: MS4wfC8H5kkZhXB1zicGDqvcQlC1Tl3lMTOcElvh0Efz70YGRgQalgb4N6/9XVLjnqOVd5XtxwgTWuvuCEhwp/JZ2oHrdLkl4d7unSyOefbSkgcd/M5tlQn5 m+FMjUC5HJopO89WJXHQNp0ruK6VmVwHwxMAn0YDVu4FQQqVIUkN6KVyOfdC/TYD6t6vxOqv2OUxKQ== Subject: Testing again From: Steve Matzura <number6(a)noisynotes.com> Date: 10/22/2019, 2:39 AM To: rock(a)theglobalvoice.info Let's see what happens now. *** End *** There is no user 'rock', it's just a Postfix mailbox.

2 6

Problems with new installation
by Steve Matzura 22 Oct '19

22 Oct '19

I had Dovecot running very well on Ubuntu 14.04. Then I decided that since That version of Ubuntu was now out of support, I would build a new server on 18.04, which has been done. I thought I could take the old dovecot.conf and everything in conf.d that had been customized and drop it in place, and everything would just work. That has proven not to be correct. The files that had been edited were the main /etc/dovecot/dovecot.conf, and in conf.d, 10-master.conf, 10-ssl.conf, and 10-mail.conf. I have restored the original package-supplied versions of these files and restarted Dovecot, but still no one can connect. Here's my configuration, with the version number at the top: # 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) # OS: Linux 4.15.0-64-generic x86_64 Ubuntu 18.04.3 LTS auth_debug = yes auth_debug_passwords = yes mail_debug = yes mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_privileged_group = mail namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } protocols = " imap lmtp" userdb { driver = passwd } verbose_ssl = yes The edits that were made to the aforementioned files were not actually done by me, so I can't explain why certain choices were made, except for obvious ones such as SSL key paths. But I figured the system should work at least on a vanilla configuration. Postfix is also involved in this, so the problems may not at all be with Dovecot, but with Postfix. I think I just need to draw the line between them and be able to know definitely that at least one half of the system is functioning correctly so I know I can mark that part as working, and proceed with debugging the other. My bet at this point is that it's not a Dovecot problem, but I'm not clear on how to determine this, with or without my changed files. Thanks in advance.

2 1

Dovecot v2.3.8 released
by Aki Tuomi 20 Oct '19

20 Oct '19

https://dovecot.org/releases/2.3/dovecot-2.3.8.tar.gz https://dovecot.org/releases/2.3/dovecot-2.3.8.tar.gz.sig Binary packages in https://repo.dovecot.org/ Changes + Added mail_delivery_started and mail_delivery_finished events, see https://doc.dovecot.org/admin_manual/list_of_events/ for details. + dsync-replication: Don't replicate users who have "noreplicate" extra field in userdb. + doveadm service status: Show total number of processes created. + When logging to syslog, use instance_name setting's value for the ident. This commonly is added as a log prefix. + Base64 encoding/decoding code was rewritten with additional features. It shouldn't cause any user visible changes. - v2.3.7 regression: If a folder only receives new mails without any other mail access, dovecot.index.log keeps growing forever and dovecot.index keeps being rewritten for every mail delivery. - dsync-replication may lose keywords after syncing mails restored from another replica. This only happened if the mail only had keywords and no system flags. - event filters: Non-textual event fields could not be filtered using wildcards. - auth: Scope parameter was missing from OAuth password grant request. - doveadm client-server communication may hang in some situations. It is also using unnecessarily small TCP/IP packet sizes. - doveadm who and kick did not flush protocol output correctly. - imap: SETMETADATA with literal value would delete the metadata value instead of updating it. - imap: When client issues FETCH PREVIEW (LAZY=FUZZY) command, the caching decisions should be updated so that newly saved mails will have the preview cached. - With mail_nfs_index=yes and/or mail_nfs_storage=yes setuid/setgid permission bits in some files may have become dropped with some NFS servers. Changed NFS flushing to now use chmod() instead of chown(). - quota: warnings did not work if quota root was noenforcing - acl: Global ACL file ignored the last line if it didn't end with LF. - doveadm stats dump: With JSON formatter output numbers using the number type instead of as strings - lmtp_proxy: Ensure that real_* variables are correctly set when using lmtp_proxy. - event exporter: http-post driver had hardcoded timeout and did not support DNS lookups or TLS connections. - auth: Fix user iteration to work with userdb passwd with glibc v2.28. - auth: auth service can crash if auth-policy JSON response is invalid or returned too fast. - In some rare situations "ps" output could have shown a lot of "?" characters after Dovecot process titles. - When dovecot.index.pvt is empty, an unnecessary error is logged: Error: .../dovecot.index.pvt reset, view is now inconsistent - SMTP address encoder duplicated initial double quote character when the localpart of an address ended in '..'. For example "user+..(a)example.com" became ""user+.."@example.com in a sieve redirect. --- Aki Tuomi Open-Xchange Oy

5 9

BUG: Mailbox renaming algorithm got into a potentially infinite loop, aborting
by Alex Ha 20 Oct '19

20 Oct '19

Hi all! I have two dovecot servers with dsync replication over tcp. Replication works fine except for one user. # doveadm replicator status username priority fast sync full sync success sync failed customer(a)example.com none 00:00:33 07:03:23 03:22:31 y If i run dsync manually, i get the following error message: dsync-local(customer(a)example.com): Debug: brain M: -- Mailbox renamed, restart sync -- dsync-local(customer(a)example.com): Error: BUG: Mailbox renaming algorithm got into a potentially infinite loop, aborting dsync-local(customer(a)example.com): Error: Mailbox INBOX.Foldername sync: mailbox_rename failed: Invalid mailbox name 'Foldername-temp-1': Missing namespace prefix 'INBOX.' For more info see the attached sync_loop.log Thanks for your help, Alex

3 5

Coredump v2.3.8 specific msg fetch, corrupted record in index cache, Broken physical size
by Erik de Waard 20 Oct '19

20 Oct '19

Hi, i'm getting a coredump on a specific msg, i've attached the gdb. file on disk i noticed W=<vsize> is missing. 1571209735.M744550P1608.rwvirtual65,S=15886:2,S Best regards, mail.log Oct 18 14:41:39 rwvirtual10 dovecot: imap(johndoe(a)company.nl)<15868><qjTFpy6VPsMKAAok>: Error: Mailbox INBOX.Debug: UID=1041: read(/data/mail/ company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S) failed: Cached message size smaller than expected (15886 < 16367, box=INBOX.Debug, UID=1041) (read reason=mail stream) Oct 18 14:41:39 rwvirtual10 dovecot: imap(johndoe(a)company.nl)<15868><qjTFpy6VPsMKAAok>: Error: Corrupted record in index cache file /data/indexes/ johndoe(a)company.nl/.Debug/dovecot.index.cache: UID 1041: Broken physical size in mailbox INBOX.Debug: read(/data/mail/ company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S) failed: Cached message size smaller than expected (15886 < 16367, box=INBOX.Debug, UID=1041) Oct 18 14:41:39 rwvirtual10 dovecot: imap(johndoe(a)company.nl)<15868><qjTFpy6VPsMKAAok>: Panic: file istream.c: line 315 (i_stream_read_memarea): assertion failed: (old_size <= _stream->pos - _stream->skip) Oct 18 14:41:39 rwvirtual10 dovecot: imap(johndoe(a)company.nl)<15868><qjTFpy6VPsMKAAok>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0xe5c31) [0x7f5237d8cc31] -> /usr/lib/dovecot/libdovecot.so.0(+0xe5cd1) [0x7f5237d8ccd1] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f5237ce4103] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_memarea+0x300) [0x7f5237d9abd0] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x35) [0x7f5237d9aca5] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x3d) [0x7f5237d9b64d] -> /usr/lib/dovecot/libdovecot.so.0(+0xc4da1) [0x7f5237d6bda1] -> /usr/lib/dovecot/libdovecot.so.0(+0xc5d4b) [0x7f5237d6cd4b] -> /usr/lib/dovecot/libdovecot.so.0(message_parser_parse_next_block+0x65) [0x7f5237d6da05] -> /usr/lib/dovecot/libdovecot.so.0(message_parser_parse_body+0x31) [0x7f5237d6dcf1] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xc19d4) [0x7f52381099d4] -> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_init_stream+0x3aa) [0x7f5238109e9a] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x74b25) [0x7f52380bcb25] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_stream_because+0x70) [0x7f52380833a0] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x748d7) [0x7f52380bc8d7] -> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_virtual_size+0x44) [0x7f5238082ea4] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](+0x21523) [0x561f6425f523] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](+0x1f759) [0x561f6425d759] -> dovecot/imap [ johndoe(a)company.nl 10.0.10.36 FETCH](imap_fetch_more+0x39) [0x561f6425eb99] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](cmd_fetch+0x342) [0x561f6424ef32] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](command_exec+0x7c) [0x561f6425bb0c] -> dovecot/imap [ johndoe(a)company.nl 10.0.10.36 FETCH](+0x1bb72) [0x561f64259b72] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](+0x1bc04) [0x561f64259c04] -> dovecot/imap [johndoe(a)company.nl 10.0.10.36 FETCH](client_handle_input+0x1a5) [0x561f6425a025] -> dovecot/imap [ johndoe(a)company.nl 10.0.10.36 FETCH](client_input+0x82) [0x561f6425a6c2] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x75) [0x7f5237da6845] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x11b) [0x7f5237da825b] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x59) [0x7f5237da6959] Oct 18 14:41:39 rwvirtual10 dovecot: imap(johndoe(a)company.nl)<15868><qjTFpy6VPsMKAAok>: Fatal: master: service(imap): child 15868 killed with signal 6 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps)

2 2

dovecot 2.3.7.2-1~bionic: Performance issues caused by excessive IO to ~/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.tmp
by Ralf Hildebrandt 16 Oct '19

16 Oct '19

I set up system copying all mails to a backup system. This used to work without a hitch - now in the last few days mails would pile up in the Postfix Queue, waiting to be delivered using the lmtp transport into dovecot. So dovecot was being slow, but why? After all, nothing changed. After reading some articles on stackoverflow I found a way of finding out which file gets the most IO: % sysdig -c topfiles_bytes; This command quickly pointed to ~/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.tmp That file was written excessively. I then put ~/mdbox/mailboxes/INBOX/dbox-Mails/ into tmpfs and alas, the queue would drain quickly. But why is that? Why would the index file be updated so often? This is dovecot 2.3.7.2-1~bionic # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # OS: Linux 5.0.0-29-generic x86_64 Ubuntu 18.04.3 LTS default_vsz_limit = 2 G lmtp_user_concurrency_limit = 10000 mail_attachment_dir = /home/copymail/attachments mail_attachment_hash = %{sha256} mail_fsync = never mail_location = mdbox:~/mdbox mail_plugins = zlib fts fts_lucene mdbox_rotate_size = 128 M namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = username_format=%u /etc/dovecot/passwd driver = passwd-file } plugin { fts = lucene fts_languages = de,en fts_lucene = whitespace_chars=@. } protocols = " imap lmtp" service imap-login { inet_listener imap { address = 127.0.0.1 port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { inet_listener lmtp { address = 10.0.5.208 port = 1025 } process_min_avail = 5 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } ssl_ca = /etc/ssl/certs/ca-certificates.crt ssl_cert = </etc/ssl/certs/mail-cbf.pem ssl_cipher_list = EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA+RC4:EECDH:EDH+aRSA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS:!RC4 ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = username_format=%u /etc/dovecot/passwd driver = passwd-file } protocol lmtp { mail_plugins = zlib fts fts_lucene } -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt(a)charite.de | https://www.charite.de

3 9

Vacation Fcc
by Gregory Heytings 14 Oct '19

14 Oct '19

Hi list, I use Dovecot's Pigeonhole Sieve implementation, and there is one little feature I'm missing: When a vacation message is sent, I'd like to keep a copy of that message in my "sent" mailbox. There is an RFC draft (draft-ietf-extra-sieve-fcc-09) for this, which adds a ":fcc" argument to vacation, but apparently it's not supported by Pigeonhole. I have two questions: Will ":fcc" be supported in the future? In the meantime (or if supporting ":fcc" is not planned), is it possible to achieve the same result with the existing Sieve extensions? (I can imagine a way to do this at the MTA level by checking the presence of the "Auto-Submitted:" header, but did not test it.) Thanks, Gregory

2 3

Sieve replication - Debian 9.11 - Dovecot 2.2.7 - script changes not replicated
by Daniel Botting 14 Oct '19

14 Oct '19

Hi, I am trying to setup Sieve replication, it is almost working: 1/ Create a script - sync'd across 2/ Activate/de-activate a script - change sync'd 3/ Delete a script - change sync'd But if I make a change to a script it is not replicated, unless I de-activate and activate again. I am seeing in the logs the below during this process (de-activating/activating): Oct 9 17:01:39 hostname dovecot: dsync-local(a_user): Debug: doveadm-sieve: Iterating Sieve mailbox attribute: vendor/vendor.dovecot/pvt/server/sieve/files/0910-active-1640 Oct 9 17:01:39 hostname dovecot: dsync-local(a_user): Debug: doveadm-sieve: Value missing for key `vendor/vendor.dovecot/pvt/server/sieve/default' (last change: 2019-10-09 17:01:37) # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-3-amd64 x86_64 Debian 9.11 auth_debug = yes auth_debug_passwords = yes auth_verbose = yes default_vsz_limit = 0 doveadm_password = # hidden, use -P to show it first_valid_gid = 8 first_valid_uid = 8 last_valid_gid = 8 last_valid_uid = 8 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_debug = yes mail_gid = 8 mail_location = maildir:~/Maildir mail_plugins = " notify replication" mail_uid = 8 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext editheader imapflags namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { mail_replica = tcps:replication_server_url:port_number sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +editheader +imapflags } protocols = " imap sieve pop3" replication_max_conns = 4 service aggregator { fifo_listener replication-notify-fifo { user = mail } unix_listener replication-notify { user = mail } } service auth { unix_listener /var/run/dovecot-exim-bridge { mode = 0660 user = Debian-exim } } service doveadm { inet_listener { port = 12345 ssl = yes } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_limit = 512 process_min_avail = 4 service_count = 1 } service imap { process_limit = 1024 } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 1 service_count = 8 vsz_limit = 256 M } service managesieve { process_limit = 1024 } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0666 } } ssl = required ssl_cert = </path/certs/a_domain/fullchain.pem ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap override_fields = home=/var/mail/%u uid=mail gid=mail } verbose_ssl = yes protocol lda { mail_plugins = " notify replication sieve" } protocol imap { mail_max_userip_connections = 32 mail_plugins = " notify replication" } protocol sieve { mail_max_userip_connections = 10 managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } Kind regards -- Daniel Botting

2 1

Password issue
by ＠lbutlr 13 Oct '19

13 Oct '19

One of my accounts was having login failures when trying to send mail, but was able to check mail. I tried everything I could think of to see what the issue might be, but eventually went in and reset the password in the sql database (I knew the password, so I reset it to the same password). {SHA256-CRYPT}$5$VuS… {SHA256-CRYPT}$5$VI7… So the password was updated properly. Clients can still login to check mail, but are failing to send mail, so the password was not the issue. First, logins in to check mail and succeeds > Oct 09 16:02:16 imap-login: Info: Login: user=<myuser(a)covisp.net>, xx.xx.xx.xx, PLAIN, TLS Sends device MUA info > Oct 09 16:02:16 imap(myuser(a)covisp.net)<84553><bP4acIGUJttJDqGg>: Info: ID sent: name=iPad Mail, version=17A860, os=iOS, os-version=13.1.2 (17A860) Fails to send mail > Oct 09 16:02:50 imap-login: Info: Aborted login (auth failed, 5 attempts in 33 secs): user=<myuser(a)covisp.net>, xx.xx.xx.xx, PLAIN, TLS Postfix logs "Client host rejected: Access denied” but as I said, other accounts can submit and there’s nothing special in the submission service in master.cf. Passwords are all copied/pasted so identical in both IMAP (p993) and SMTP (p587) settings. Settings for the SMTP server are identical to the other accounts using the same server. I don’t know how to login to IMAP via the openssl command line interface, but this is what happens when I login to the submission port.  % openssl s_client -connect mail.covisp.net:587 -starttls smtp … auth login 334 VXNlcm5hbWU6 base64(username)= 334 UGFzc3dvcmQ6 base64(pasword)= DONE (Same results without the terminating ‘=‘) I’m sure I am missing something really obvious? -- Lithium will no longer be available on credit

6 12

Error: SSL_accept() syscall failed
by C. James Ervin 11 Oct '19

11 Oct '19

In setting up my new mail server, I am getting the following in the logs: Oct 11 07:10:59 kumo dovecot[5704]: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=24.53.79.10, lip=172.26.12.90, *TLS handshaking: SSL_accept() syscall failed: Success*, session=<B9OokqCUD+UYNU8K> I have tried various ssl_protocols entries, but for now have defaulted back to ssl_protocols = !SSLv3 (the "out of the box" setting). The certificate (ssl_cert = </etc/ssl/certs/certificate_and_key.crt) is valid and the same one used by postfix. However, I belive the error appeared only after removing the self signed certificate and installing the one I purchased. Warning: though I was a sysadmin a long long time, it has been a while! I have not run a mail server in 15 years, but am moving my mail back "in-house" as I approach retirement! I searched for a forum where I could post this issue, but only found this list. # 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) # OS: Linux 4.15.0-1051-aws x86_64 Ubuntu 18.04.1 LTS auth_mechanisms = plain login mail_location = maildir:~/Maildir mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap sieve pop3" service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } } ssl_cert = </etc/ssl/certs/certificate_and_key.crt ssl_cipher_list = ALL:!ADH:!LOW:!EXP:!aNULL:+HIGH:+MEDIUM ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it userdb { driver = passwd } protocol lda { deliver_log_format = msgid=%m: %$ mail_plugins = sieve postmaster_address = postmaster quota_full_tempfail = yes rejection_reason = Your message to <%t> was automatically rejected:%n%r } protocol imap { imap_client_workarounds = delay-newmail mail_max_userip_connections = 10 } protocol pop3 { mail_max_userip_connections = 10 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh }

3 3

Re: Broken link on doc.dovecot.org
by Karen Woodman 11 Oct '19

11 Oct '19

Hi again, I wanted to check in and see if you got my note about the broken link on your site. Thanks! Karen On Monday, October 7, 2019 at 5:05 PM, Karen Woodman <karen(a)getmailbird.co> wrote: > Hi there, > > I noticed that you have a broken link to a website called Qmail.org. That > site was first published 23 years ago (back in 1996!) but unfortunately, it > is no longer a working website. > > You link to Qmail.org on this page: > https://doc.dovecot.org/configuration_manual/authentication/checkpassword/ > > We just published an article that explores what happened to the site. I think > it's an interesting story, and it could be useful to your readers. > > In addition, since all of the original articles are gone, we included a > curated list of the best Qmail resources and mirrors. > > Here's the article if you want to take a look: > https://www.getmailbird.com/what-resources-are-available-now-that-qmail-org… > > Would you consider swapping out the broken link for our article? > > Please let me know if you have any questions and thank you for your time. > > Sincerely, > -Karen > > -- > Karen Woodman, Editor > 5 Ross Rd > Durham, NH 03824 > > By the way, if you didn't like getting this email you can unsubscribe > <http://ec2-52-26-194-35.us-west-2.compute.amazonaws.com/x/u?u=df0298ca-a3e4…> and > I won't email you anymore. :) >

2 1

Using maldet
by Ignacio García 10 Oct '19

10 Oct '19

Hi there. Sometimes I notice that some malware gets through amavis+clamav+postfix and lands in the user's maildir files. I wonder if it would make sense, or even if it would be advisable to scan and clean those files using a program as maldet Thanks for your help. Ignacio

1 0

Case sensitivity in :addresses in sieve vacation scripts
by Julian Kippels 10 Oct '19

10 Oct '19

Hi, I have recently updated from Dovecot 2.2 to 2.3. Since I have noticed that vacation responses from sieve are not working the same anymore. For example, my sieve script looks like this: vacation :days 1 :addresses ["Kippels(a)hhu.de","julian.kippels(a)hhu.de"] it used to be that I got a vacation response if I sent a mail to kippels(a)hhu.de and Kippels(a)hhu.de. Now I only get a response for Kippels(a)hhu.de, not for kippels(a)hhu.de. I cant say for sure, but I suppose this behaviour changed with the update. If not, why could this have happened? And in any case, how can I enable case insensitivity? Thanks Julian

2 2

Show messages within 60 days
by jacky HU 10 Oct '19

10 Oct '19

Hello, Can my inbox be set up, for example, only for messages within 60 days? I don't want to create a new virtual mailbox. Can anyone help me?

2 1

Dovecot core debug
by MediumDave 10 Oct '19

10 Oct '19

Hi all, I have a Dovecot core that I am trying to track down, in an attempt to replicate so I can log a bug report, and am hoping others might be able to help me as I’m reaching my limit. My working theory is that two user sessions are active at the same time, one of the sessions is “mid-search” (or perhaps in idle state) on a virtual folder where the number of results is zero (due to a null results array), when another session either performs an append or perhaps a new message arrives in the virtual view and qualifies for the search. It seems that the current list of UID’s in the search results is zero (null), and new messages are being appended to the search results, which results in a divide by zero. But I have not been able to create a scenario to replicate this on my test box, but is occurring regularly (every hour or so) on my mail server. I have been able to replicate on my test box using a single account by performing many random operations over and over again, with multiple sessions, but took over 24 hours and I can’t isolate the action that caused it. Dovecot version is 2.2.36 (1f10bfa63) as shipped with Centos 7 (latest update). If I can reproduce, I can then test the latest 2.3 and see if this is still a problem in that version. Here is the full back trace: #0 0x00007f8d40636e58 in array_count_i (array=0x557be80cc168) at array.h:155 No locals. #1 array_get_i (count_r=<synthetic pointer>, array=0x557be80cc168) at array.h:209 No locals. #2 seq_range_lookup (array=0x557be80cc168, seq=2222, idx_r=0x7ffead4141d4) at seq-range-array.c:14 data = <optimized out> idx = <optimized out> left_idx = <optimized out> right_idx = <optimized out> count = <optimized out> #3 0x00007f8d406379ae in seq_range_exists (array=array@entry=0x557be80cc168, seq=seq@entry=2222) at seq-range-array.c:391 idx = 32766 #4 0x00007f8d408fd3d9 in mailbox_search_result_add (result=result@entry=0x557be80cc150, uid=2222) at mailbox-search-result.c:121 __FUNCTION__ = "mailbox_search_result_add" #5 0x00007f8d40962f30 in index_search_result_update_appends (result=result@entry=0x557be80cc150, old_messages_count=<optimized out>) at index-search-result.c:168 t = 0x557be7fb1820 search_ctx = 0x557be7fef860 mail = 0x557be8100198 search_arg = {next = 0x557be7fab460, type = SEARCH_SEQSET, value = {subargs = 0x0, seqset = {arr = {buffer = 0x557be7f69208, element_size = 8}, v = 0x557be7f69208, v_modifiable = 0x557be7f69208}, str = 0x0, time = 0, size = 0, flags = 0, search_flags = (unknown: 0), date_type = 0, thread_type = MAIL_THREAD_NONE, modseq = 0x0, search_result = 0x0, mime_part = 0x0}, initialized = {search_args = 0x0, keywords = 0x0, mailbox_glob = 0x0}, context = 0x0, hdr_field_name = 0x0, match_not = 0, match_always = 0, nonmatch_always = 0, fuzzy = 0, no_fts = 0, result = -1} message_count = 2008 ret = <optimized out> __FUNCTION__ = "index_search_result_update_appends" #6 0x00007f8d4096dc37 in search_result_update (result=0x557be80cc150, ctx=0x557be7ff8950) at index-sync-search.c:78 No locals. #7 index_sync_search_results_update (ctx=ctx@entry=0x557be7ff8950) at index-sync-search.c:88 results = 0x557be7f9d480 i = <optimized out> count = <optimized out> #8 0x00007f8d4096e4b4 in index_mailbox_sync_deinit (_ctx=0x557be7ff8950, status_r=0x557be7ff0108) at index-sync.c:353 ctx = 0x557be7ff8950 sync_rec = {seq1 = 0, seq2 = 0, type = MAILBOX_SYNC_TYPE_EXPUNGE} delayed_expunges = false ret = <optimized out> #9 0x00007f8d40950400 in mailbox_list_index_sync_deinit (ctx=0x557be7ff8950, status_r=0x557be7ff0108) at mailbox-list-index.c:976 ---Type <return> to continue, or q <return> to quit--- ibox = 0x557be7fd0bf0 box = 0x557be7f9d078 #10 0x00007f8d408ed568 in mailbox_sync_deinit (_ctx=<optimized out>, status_r=<optimized out>) at mail-storage.c:1953 ctx = <optimized out> box = <optimized out> errormsg = <optimized out> error = MAIL_ERROR_NONE ret = <optimized out> #11 0x0000557be6613431 in imap_sync_finish (ctx=ctx@entry=0x557be7ff0090, aborting=aborting@entry=false) at imap-sync.c:279 client = 0x557be7f8a6d8 ret = 0 #12 0x0000557be6613fed in imap_sync_more (ctx=0x557be7ff0090) at imap-sync.c:594 str = <optimized out> ret = 1 __FUNCTION__ = "imap_sync_more" #13 0x0000557be6614676 in cmd_sync_continue (sync_cmd=0x557be7f8be88) at imap-sync.c:629 cmd = 0x557be7f75e40 prev = <optimized out> client = 0x557be7f8a6d8 ctx = 0x557be7ff0090 ret = <optimized out> __FUNCTION__ = "cmd_sync_continue" #14 0x0000557be6614b34 in cmd_sync_client (sync_cmd=0x557be7f8be88) at imap-sync.c:720 ctx = <optimized out> flags = <optimized out> client = 0x557be7f8a6d8 imap_flags = <optimized out> no_newmail = <optimized out> #15 cmd_sync_delayed_real (client=0x557be7f8a6d8) at imap-sync.c:833 cmd = <optimized out> first_expunge = <optimized out> first_nonexpunge = <optimized out> #16 cmd_sync_delayed (client=client@entry=0x557be7f8a6d8) at imap-sync.c:841 _data_stack_cur_id = 3 #17 0x0000557be6607a18 in client_handle_input (client=client@entry=0x557be7f8a6d8) at imap-client.c:1233 remove_io = <optimized out> handled_commands = <optimized out> __FUNCTION__ = "client_handle_input" #18 0x0000557be6607eb5 in client_input (client=0x557be7f8a6d8) at imap-client.c:1264 ---Type <return> to continue, or q <return> to quit--- cmd = 0xcfee4 output = 0x557be7f8bd90 bytes = 2052 __FUNCTION__ = "client_input" #19 0x00007f8d40624be2 in io_loop_call_io (io=0x557be7f84cb0) at ioloop.c:600 ioloop = 0x557be7f719c0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #20 0x00007f8d406262cf in io_loop_handler_run_internal (ioloop=ioloop@entry=0x557be7f719c0) at ioloop-epoll.c:223 ctx = 0x557be7f734e0 events = <optimized out> list = 0x557be7f74f40 io = <optimized out> tv = {tv_sec = 1795, tv_usec = 114881} events_count = <optimized out> msecs = <optimized out> ret = 1 i = 0 call = <optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #21 0x00007f8d40624c7c in io_loop_handler_run (ioloop=ioloop@entry=0x557be7f719c0) at ioloop.c:649 No locals. #22 0x00007f8d40624e38 in io_loop_run (ioloop=0x557be7f719c0) at ioloop.c:624 __FUNCTION__ = "io_loop_run" #23 0x00007f8d405a9c03 in master_service_run (service=0x557be7f71860, callback=callback@entry=0x557be6614e30 <client_connected>) at master-service.c:724 No locals. #24 0x0000557be65fa262 in main (argc=1, argv=0x557be7f715f0) at main.c:484 set_roots = {0x557be6825700 <imap_setting_parser_info>, 0x7f8d40df95a0, 0x0} login_set = {auth_socket_path = 0x557be7f69048 "\001", postlogin_socket_path = 0x0, postlogin_timeout_secs = 60, callback = 0x557be6615600 <login_client_connected>, failure_callback = 0x557be6614f40 <login_client_failed>, request_auth_token = 1} service_flags = <optimized out> storage_service_flags = <optimized out> username = 0x0 auth_socket_path = <optimized out> c = <optimized out> And the output of array in frame #0: (gdb) f 0 #0 0x00007f8d40636e58 in array_count_i (array=0x557be80cc168) at array.h:155 155 return array->buffer->used / array->element_size; (gdb) p *array $2 = {buffer = 0x0, element_size = 0} Here is the virtual folder config in use: # cat /etc/dovecot/virtual/combined/dovecot-virtual !INBOX INBOX/Sent INBOX/Drafts all Any help would be greatly appreciated in diagnosing the cause here. Thanks, Dave

1 0

Panic at "doveadm backup" (mailbox_symlink_exists): assertion failed: (ret > 0)
by Alex La 09 Oct '19

09 Oct '19

Hi. I try to sync from a dovecot server to another server via the following command. doveadm -D -o mail_fsync=never -o imapc_user=info(a)DOMAIN.COM -o imapc_password='PASS' backup -R -u info(a)DOMAIN.COM imapc: After some short runtime I get the following panic. ``` dsync(info(a)DOMAIN.COM): Panic: file mailbox-alias-plugin.c: line 77 (mailbox_symlink_exists): assertion failed: (ret > 0) dsync(info(a)DOMAIN.COM): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xa17ce) [0x7ff2f4da77ce] -> /usr/lib64/dovecot/libdovecot.so.0(default_fatal_handler+0x2a) [0x7ff2f4da783a] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7ff2f4d36dd7] -> /usr/lib64/dovecot/lib20_mailbox_alias_plugin.so(+0x133e) [0x7ff2f3afa33e] -> /usr/lib64/dovecot/lib20_mailbox_alias_plugin.so(+0x14d4) [0x7ff2f3afa4d4] -> /usr/lib64/dovecot/lib01_acl_plugin.so(+0xf2aa) [0x7ff2f432a2aa] -> /usr/lib64/dovecot/lib01_acl_plugin.so(+0xf908) [0x7ff2f432a908] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_list_iter_next+0x44) [0x7ff2f50ec5e4] -> doveadm(dsync_mailbox_tree_fill+0x19b) [0x558004586e5b] -> doveadm(dsync_brain_mailbox_trees_init+0x124) [0x55800457b204] -> doveadm(dsync_brain_run+0x3d7) [0x558004578317] -> doveadm(+0x29b71) [0x55800455eb71] -> doveadm(+0x2bd2c) [0x558004560d2c] -> doveadm(+0x2c92a) [0x55800456192a] -> doveadm(doveadm_mail_try_run+0x215) [0x558004562285] -> doveadm(main+0x46a) [0x5580045513fa] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x7ff2f495a505] -> doveadm(+0x1c565) [0x558004551565] ``` There is this message in the archive wich mention that similar directory names could be a problem. https://dovecot.org/list/dovecot/2016-December/106528.html I have cleanuped the similar directories but I still get the panic. This are the main folders in the Account ``` ... some custom folders =Trash =Sent Messages =Junk =Drafts =Coaching =Archiv =INBOX ``` Dovecot version # 2.2.36.4 (baf9232c1): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.24.2 (aaba65b7) # OS: Linux 3.10.0-1062.1.2.el7.x86_64 x86_64 CentOS Linux release 7.7.1908 (Core) Thanks for any help Regards Alex

1 0

Recommendations for shared storage
by Dan 09 Oct '19

09 Oct '19

Hello all, This email is by no means an "Educate me step by step" query, But more of an inquiry about which direction to go based on your experience. I've been working with Dovecot for some years now, so the configuration of that piece is no stranger. However, Choosing the right style of shared storage has proven to be somewhat of a challenge. A bit of background of what I need to provide service for: ~80,000 users, that will potentially grow throughout the future ~100 unique domains Ability to scale horizontally. As resources grow, adding a node (or group of nodes) with the exact configuration as the other nodes. Director should be able to send the connection to a node that has the same data as it's neighbors, Allowing high availability. What I've experimented with so far: _Server pairs, using dsync to replicate data between the nodes - Director to send users to a specific pair (director_tag returned from passdb) _ Pros: - Easy way to replicate data, without the need for external tools Cons: - Limited to one pair of nodes - dsync doesn't replicate all sieve files, for example, one file that tracks out of office replies has not been replicated in my experience _NFS storage managed by corosync and pacemaker - Director to send users to any backend _ Pros: - One location for all data. New nodes that get stood up will be easy to configure Cons: - Complex to set up In your experience, what did you choose for mail storage? Thanks.

1 0

Buster packages available
by Aki Tuomi 09 Oct '19

09 Oct '19

Hi! We have now buster packages available starting from 2.3.8. You can find them from https://repo.dovecot.org/ In related news, we are planning on dropping packages for Debian Jessie, Ubuntu 18 and CentOS6 starting from 2.3.9. --- Aki Tuomi Open-Xchange oy

2 2

CentOS 8 / 7
by Günther J. Niederwimmer 08 Oct '19

08 Oct '19

Hello List, I have to install a "new" system, what is the best way for this. I like to install a CentOS System but I only found dovecot for CentOS 7 is this compatible for CentOS 8 or have I to setup a CentOS 7 System ? The onboard dovecot is 2.2.36-5 :-( Thanks for a answer, -- mit freundlichen Grüßen / best regards Günther J. Niederwimmer

3 2

Pigeonhole v0.5.8 released
by Aki Tuomi 08 Oct '19

08 Oct '19

https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.8.ta… https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.8.ta… Binary packages in https://repo.dovecot.org/ Changes - Sieve may leak resources in rare cases when a redirect, vacation or report action fails to send the message. This mainly applies when Sieve is executed in IMAP context; i.e., for the IMAPSIEVE or FILTER=SIEVE capabilities. --- Aki Tuomi Open-Xchange Oy

1 0

ITERINDEX not showing subfolders.
by Erik de Waard 08 Oct '19

08 Oct '19

# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf Hello, we're using mail on NFS and the indexes on localdisk, with a director setup. (18K+ users) now to get more performance i thought to use the ITERINDEX option. however this has the side-effect on some mailboxes that it doesn't show the subfolders under INBOX. they seem 'disappeared'. Removing the ITERINDEX option fixes this again. Deleting the local indexes to be recreated doesn't solve the problem. What could cause this? and how to fix it. # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.9.0-11-amd64 x86_64 Debian 9.11 # Hostname: somemail.host.domain auth_cache_negative_ttl = 0 auth_cache_size = 10 M auth_cache_ttl = 1 days auth_username_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@#" default_client_limit = 1500 default_vsz_limit = 1 G disable_plaintext_auth = no info_log_path = /dev/null listen = * log_timestamp = "%Y-%m-%d %H:%M:%S " login_trusted_networks = 10.0.10.0/24 mail_fsync = never mail_max_userip_connections = 100 mail_prefetch_count = 10 mail_privileged_group = mail mailbox_list_index_include_inbox = yes mmap_disable = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . type = private } passdb { args = username_format=%{rip} /etc/dovecot/passdb default_fields = noauthenticate=y driver = passwd-file } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { sieve_execute_bin_dir = /etc/dovecot/sieve-executables sieve_global_extensions = +vnd.dovecot.execute sieve_plugins = sieve_extprograms } protocols = imap lmtp service anvil { unix_listener anvil-auth-penalty { mode = 0600 } } service auth { user = root } service imap-login { client_limit = 6000 process_limit = 4 process_min_avail = 4 service_count = 0 vsz_limit = 600 M } service imap { client_limit = 1 process_limit = 1024 service_count = 50 } service lmtp { inet_listener lmtp { port = 24 } } ssl = no ssl_cert = </etc/dovecot/dovecot.crt ssl_key = # hidden, use -P to show it userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } verbose_proctitle = yes protocol lmtp { mail_fsync = optimized mail_plugins = " sieve" plugin { sieve = ~/filters.sieve sieve_after = /etc/dovecot/sieve/after.sieve sieve_before = /etc/dovecot/sieve/before.sieve } userdb { args = /etc/dovecot/dovecot-sql-lmtp.conf driver = sql name = } } dovecot-sql.conf driver = mysql connect = host=10.0.10.150 dbname=maildb user=mail password=5ecret! default_pass_scheme = SHA password_query = select login as user, crypt_sha1 as password, home as userdb_home, uid AS userdb_uid, gid AS userdb_gid, concat('maildir:',maildir,':INDEX=/data/indexes/',login,':ITERINDEX',':VOLATILEDIR=/data/indexes/',login) as userdb_mail from mailbox left join aliases on aliases.systemid = aliasid where login = '%u' and inactive = 0; user_query = select home, maildir as mail, uid, gid from mailbox left join aliases on aliases.systemid = aliasid where login = '%u' and inactive = 0; iterate_query = select distinct login as user from mailbox;

2 1

Is imap "list" required before imap "select" for shared folder?
by Gene Smith 08 Oct '19

08 Oct '19

I set up a shared mailbox with dovecot and it basically works. However, before I can imap SELECT or STATUS the shared mailbox I have to first do an imap LIST, i.e, . list "" * If list is not done first, the imap select or status command on the shared mailbox results in a "NO" response with "mailbox doesn't exist" response text. I can provide more information if this is not expected behavior. -gene

2 2

Sieve redirect is broken in 2.3.7.2 - signal 11
by Demonhost 07 Oct '19

07 Oct '19

Hi, If we use sieve redirect under dovecot 2.3.7.2 we end up with Oct 04 03:30:31 dockerhost docker[12154]: 2019-10-04T03:30:31 53ac2ae27650 postfix: 0605F207B0F36: to=<xxxx(a)xxxx.xx>, relay=127.0.0.1[127.0.0.1]:10024, delay=1.5, delays=0.36/0/0/1.1, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 6FC89207B0F38) Oct 04 03:30:31 dockerhost docker[12154]: 2019-10-04T03:30:31 53ac2ae27650 postfix: 6FC89207B0F38: to=<xxxx(a)xxxx.xx>, relay=dovecot, delay=0.31, delays=0.05/0/0/0.26, dsn=4.3.0, status=deferred (Command died with signal 11: "/usr/libexec/dovecot/dovecot-lda") Using docker with official alpine image. / # cat /etc/alpine-release 3.8.4 / # apk info -v | grep dovecot WARNING: Ignoring APKINDEX.adfa7ceb.tar.gz: No such file or directory WARNING: Ignoring APKINDEX.efaa1f73.tar.gz: No such file or directory dovecot-2.3.7.2-r0 dovecot-fts-solr-2.3.7.2-r0 dovecot-ldap-2.3.7.2-r0 dovecot-pigeonhole-plugin-2.3.7.2-r0 dovecot-pigeonhole-plugin-ldap-2.3.7.2-r0 Sieve rule is: # rule:[test] if header :contains "subject" "test" { redirect "testemail(a)gmail.com"; } In host's dmesg we found the following: [213184.882341] traps: dovecot-lda[6128] general protection ip:7ff6cf8144f7 sp:7fff5f800b30 error:0 in libdovecot.so.0.0.0[7ff6cf724000+360000] Sorry, not knowledgeable enough on how to do the GBD debug. ----------------- We went back to previous version and issue disappeared. 8b45bb255b67:/# cat /etc/alpine-release 3.8.4 8b45bb255b67:/# apk info -v | grep dovecot WARNING: Ignoring APKINDEX.adfa7ceb.tar.gz: No such file or directory WARNING: Ignoring APKINDEX.efaa1f73.tar.gz: No such file or directory dovecot-2.3.6-r0 dovecot-fts-solr-2.3.6-r0 dovecot-ldap-2.3.6-r0 dovecot-pigeonhole-plugin-2.3.6-r0 dovecot-pigeonhole-plugin-ldap-2.3.6-r0 Anyone else already had this problem or you know how to fix it? Thanks in advance.

2 10

Dovecot proxying to some backend using LOGIN proxy_mech
by Sébastien Riccio 06 Oct '19

06 Oct '19

Hello list, I am currently testing a setup for a PoC wit this configuration. - 1 x Frontend dovecot for proxying IMAP/POP3/LMTP/ManageSieve/Submission - 2 x Backend dovecot with local mail storage The frontend does the user authentification and communicate with the backends using a master password The fronted accepts PLAIN and LOGIN auth mechanisms and talk with backends using PLAIN auth mechanism (with the master password). This works very well, it's cool. Then, I've added to this setup an existing mail server (running another mailserver software) as a 3rd backend, and would like the frontend to also proxy for this, but this time not using master password. This is working for IMAP/POP3 when it uses PLAIN auth, but not for Submission. The backend server in this case only accepts LOGIN auth and not PLAIN on port 587. So I found out there is a field in the passdb we can add (proxy_mech), and I've set it to LOGIN. The frontend seems to now use LOGIN auth mech to talk to this 3rd backend, but the authentication still fails. According to the backend logs, tt seems dovecot proxy is now using LOGIN auth, but sends garbage as username and/or password. Also IMAP that was working when using PLAIN doesn't work anymore with LOGIN. Might this be a bug or this setup shouldn't be supported at all ? Passdb MySQL table on frontend: mysql> describe users; +-------------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------------+--------------+------+-----+---------+-------+ | user | varchar(255) | NO | PRI | NULL | | | domain | varchar(255) | NO | PRI | NULL | | | password | varchar(255) | YES | | NULL | | | displayname | varchar(255) | YES | | NULL | | | host | varchar(16) | NO | | NULL | | | usemaster | tinyint(1) | NO | | 1 | | | proxy_mech | varchar(20) | YES | | NULL | | | starttls | varchar(20) | YES | | NULL | | +-------------+--------------+------+-----+---------+-------+ mailstore-01/02 are dovecot backends otherhost is the other mailserver I also would like to proxy through dovecot proxy +---------+-----------------+-----------------------------------------+----------------+--------------+-----------+------------+----------+ | user | domain | password | displayname | host | usemaster | proxy_mech | starttls | +---------+-----------------+-----------------------------------------+----------------+--------------+-----------+------------+----------+ | user1 | somedomain.com | {SHA512-CRYPT}<some_crypted_pass> | Joe Black | mailstore-01 | 1 | NULL | NULL | | user2 | otherdomain.com | {SHA512-CRYPT}<some_crypted_pass> | Mr. Smith | mailstore-02 | 1 | NULL | NULL | | user3 | area13.com | NULL | Donald Duck | otherhost | 0 | LOGIN | any-cert | | user4 | area13.com | NULL | Thanks Obama | otherhost | 0 | LOGIN | any-cert | +---------+-----------------+-----------------------------------------+----------------+--------------+-----------+------------+----------+ Passdb query : password_query = \ SELECT concat(user, '@', domain) AS user, password, host, 'Y' AS proxy, \ IF(usemaster is TRUE, 'supermasteruserl', NULL) as master, \ IF(usemaster is TRUE, 'supermasterpassword', pass) as pass, \ IF(usemaster is FALSE, 'Y', NULL) as nopassword, \ proxy_mech, \ starttls \ FROM users WHERE user = '%n' AND domain = '%d' Some questions I'm asking myself: Is proxying using LOGIN proxy_mech supported at all to auth on backends ? Is dovecot proxying to "otherhost" supposed to decode original client auth (using PLAIN) and translate it to LOGIN format to auth with "otherhost" ? # otherhost port 587 log Without specifying proxy_mech [2019.09.19] 09:27:22.167 [192.168.60.220][3070269] cmd: EHLO dovecotproxy.local.domain [2019.09.19] 09:27:22.167 [192.168.60.220][3070269] rsp: 250-dovecotproxy.local.domain Hello [192.168.60.220]250-SIZE 52428800250-AUTH LOGIN CRAM-MD5250-STARTTLS250-8BITMIME250-DSN250 OK [2019.09.19] 09:27:22.167 [192.168.60.220][3070269] cmd: AUTH PLAIN <base64string> [2019.09.19] 09:27:22.167 [192.168.60.220][3070269] rsp: 504 Unrecognized authentication type. When using proxy_mech LOGIN [2019.09.20] 08:24:45.201 [192.168.60.220][24148464] cmd: AUTH LOGIN = [2019.09.20] 08:24:45.201 [192.168.60.220][24148464] Exception: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters. [2019.09.20] 08:24:45.201 [192.168.60.220][24148464] rsp: 535 Authentication failed # otherhost port 143 log Works without specyfing proxy_mech When using proxy_mech LOGIN (fails) [2019.09.20] 03:37:20.896 [192.168.60.220][26310645] connected at 20.09.2019 03:37:20 [2019.09.20] 03:37:20.896 [192.168.60.220][26310645] command: C CAPABILITY [2019.09.20] 03:37:20.896 [192.168.60.220][26310645] response: * CAPABILITY IMAP4rev1 AUTH=CRAM-MD5 AUTH=PLAIN UIDPLUS QUOTA XLIST CHILDREN ENABLE IDLE STARTTLS [2019.09.20] 03:37:20.896 [192.168.60.220][26310645] response: C OK CAPABILITY completed [2019.09.20] 03:37:20.896 [192.168.60.220][26310645] command: L AUTHENTICATE LOGIN [2019.09.20] 03:37:20.927 [192.168.60.220][26310645] disconnected at 20.09.2019 03:37:20 I hope I explained my setup so it's kinda understandable. I'm not good at explaining things :) Thank you for your help! root@mailfront-01:~# dovecot --version 2.3.7.2 (3c910f64b) Sébastien RICCIO SYSTEM ADMINISTRATOR

2 2

imapsieve administrator scripts are not executed in the order they are defined
by frankagainstthemachine＠gmx.de 06 Oct '19

06 Oct '19

Dear dovecot developers, I have an issue with the Pigeonhole IMAPSieve Plugin and the order in which administrator scripts are executed. Although I cannot find anything about the order in which the scripts are executed, I would expect they are executed in the order they are defined: the one defined by imapsieve_mailbox1_* before the one defined by imapsieve_mailbox2_* in case both match. I defined several administrator scripts; among them one that should be executed when copying a mail to mailbox "Inbox", and one that should be executed when copying a mail from a mailbox "*.Spam" to any other mailbox. No matter in which order I define the two scripts, the one related to "Inbox" is always executed first when I move a mail from "blah.Spam" to "Inbox", see the snipped from my logs below. I guess there might be a bug in file imap-sieve-storage.c, function imap_sieve_mailbox_rules_match(...): The comment in this function states "Insert sorted by rule index", but in case the index of the rule to be inserted is higher than any index already in the "rules" array, the rule is inserted in position 0 instead of being appended to the end, because "insert_idx" is initialized with 0. Since the rule for "*.Spam" is a pattern rule, it is the first rule to be inserted into "rules" (in imap_sieve_mailbox_rules_match_patterns(...)). Afterwards the rule for "Inbox" is always inserted at position 0 (in imap_sieve_mailbox_rules_match(...)), no matter if its rule index is higher or lower than the index of the other rule. The following change could fix this: - unsigned int insert_idx = 0; + unsigned int insert_idx = array_count(rules); Best regards, Frank ----- log ----- [...] Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: mailbox INBOX: MOVE event Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: Pigeonhole version 0.5.7.2 (7372921a) initializing Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: Sieve Extprograms plugin for Pigeonhole version 0.5.7.2 (7372921a) loaded Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: Static mailbox rule [1]: mailbox=`*.Spam' from=`*' causes=(COPY) => before=`file:/usr/lib/dovecot/sieve/spamassassin-learn- spam.sieve' after=(none) Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: Static mailbox rule [2]: mailbox=`*' from=`*.Spam' causes=(COPY) => before=`file:/usr/lib/dovecot/sieve/spamassassin-learn- ham.sieve' after=(none) Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: Static mailbox rule [3]: mailbox=`INBOX' from=`*' causes=(COPY APPEND) => before=`file:~/.dovecot.sieve' after=(none) Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: Matched static mailbox rule [2] Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: imapsieve: Matched static mailbox rule [3] Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: file storage: Using Sieve script path: /var/spool/mail/ user/.dovecot.sieve Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: file script: Opened script `.dovecot' from `/var/spool/mail/ user/.dovecot.sieve' Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: file storage: Using Sieve script path: /usr/lib/dovecot/sieve/ spamassassin-learn-ham.sieve Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: file script: Opened script `spamassassin-learn-ham' from `/usr/ lib/dovecot/sieve/spamassassin-learn-ham.sieve' Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: Opening script 1 of 2 from `/var/spool/mail/user/.dovecot.sieve' Oct 4 23:51:12 somehost dovecot[22918]: imap(user)<22927><oLq3sRyU0t/AqLwV>: Debug: sieve: Loading script /var/spool/mail/user/.dovecot.sieve [...] ----- dovecot -n ----- # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 5.1.18-gentoo x86_64 Gentoo Base System release 2.6 ext4 # Hostname: somehost.de auth_username_format = %Ln mail_debug = yes mail_home = /var/spool/mail/%u mail_location = maildir:/var/spool/mail/%u/mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vnd.dovec ot.debug namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { imapsieve_mailbox1_before = file:/usr/lib/dovecot/sieve/spamassassin-learn- spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = *.Spam imapsieve_mailbox2_before = file:/usr/lib/dovecot/sieve/spamassassin-learn- ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = *.Spam imapsieve_mailbox2_name = * imapsieve_mailbox3_before = file:~/.dovecot.sieve imapsieve_mailbox3_causes = COPY APPEND imapsieve_mailbox3_name = Inbox mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename append sieve = file:~/sieve;active=~/.dovecot.sieve sieve_execute_bin_dir = /usr/lib/dovecot/sieve sieve_extensions = +vnd.dovecot.debug sieve_filter_bin_dir = /usr/lib/dovecot/sieve sieve_filter_exec_timeout = 300s sieve_filter_input_eol = lf sieve_global = /usr/lib/dovecot/sieve sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute +vnd.dovecot.filter sieve_pipe_bin_dir = /usr/lib/dovecot/sieve sieve_pipe_exec_timeout = 300s sieve_pipe_input_eol = lf sieve_plugins = sieve_extprograms } postmaster_address = postmaster(a)frankagainstthemachine.de protocols = imap lmtp sieve sieve service imap-login { inet_listener imap { port = 0 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0666 user = postfix } } ssl = required ssl_cert = </etc/ssl/dovecot/somehost.cert.pem ssl_cipher_list = ALL:!DH:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:! 3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } verbose_ssl = yes protocol lmtp { mail_plugins = " sieve" } protocol lda { mail_plugins = sieve } protocol imap { mail_plugins = " imap_sieve" } protocol sieve { mail_debug = yes }

2 1

Is it possible to create and use some lookup table to replace (for instance) %u in mail_location?
by Gerben Wierda 06 Oct '19

06 Oct '19

Suppose my mail_location is: mail_location = maildir:/private/var/mail/nl.rna.mail/%u But I would like to use a simple lookup table to replace %u with another value, say '8DB4E345-9144-4F92-8C9F-9D47BB61CBF8’ instead of ‘username’. Is there a (simple) way to do this? Gerben Wierda Chess and the Art of Enterprise Architecture <http://enterprisechess.com/> Mastering ArchiMate <http://masteringarchimate.com/> Architecture for Real Enterprises <https://www.infoworld.com/blog/architecture-for-real-enterprises/> at InfoWorld On Slippery Ice <https://eapj.org/on-slippery-ice/> at EAPJ

2 1

Home Directory Creation
by Asai 06 Oct '19

06 Oct '19

Hello, I hate to have to ask this, but... why isn't the home directory being created automatically? Due to legacy compatibility we've had to use this type of home dir config: mail_location = maildir:/vmail/%d/%n mail_home = /vmail/%d/%n/home We're in the middle of upgrading to new hardware, and so I'm migrating configs to the new server, Dovecot 2.3.7 and Postfix 3.4.6 On our old server (Dovecot 2.2, Postfix 2.11) the home directory gets created automatically with a new user, but not on this one. The Dovecot debug logs just say "home dir not found." Can anyone point me in the right direction? Thank you, Asai

5 17

UNSEEN flag issues with multiple clients
by John Stoffel 04 Oct '19

04 Oct '19

Hi all, I've been bugged by this issue for a while, and while I see that the \UNSEEN flag is specified in the RFC to be reset once *any* client connects and looks at a mailbox, I was wondering if there's a way to change the behavior so that it's tracked on a per-client basis? Or if there's even some way to turn it off so that both my iPhone mail client and my main emacs viewmail mail client don't stomp over each other when looking at my mail folder counts of unread messages. My mail server is running Debian 9.11, which has dovecot 2.2.27-3+deb9u5 as the version. I'm only running IMAP, no POP at all. Thanks, John

2 5

Dovecote IMAPSieve user scripts
by Alexander Mankuta 03 Oct '19

03 Oct '19

Hello, I wonder how to configure IMAPSieve with user scripts. I can't find much information on the internet. I have Sieve and IMAPSieve for spam configured as described in the wiki and it works. Documentation mentions that imapsieve_url has to be set to appropriate ManageSieve server but no further explanation is given. What I want to achieve: let users create their own sieve scripts and execute them each time a message is being moved/copied between their mailboxes. I saw mentions of "association of user scripts with mailboxes" but I'm not sure what that means or if it's supported by Thuderbird Sieve extension (or any other software out there). Please advice. -- Regards, Alex

3 3

Doveadm error during store - segfault clucene
by Domenico Pastore 03 Oct '19

03 Oct '19

Hi, during the store of the messages, I find the following doveadm errors: 2019-10-02 09:22:19 auth: Debug: ldap(test.pop(a)test.xxx.it,10.11.47.60<mailto:test.pop@test.xxx.it,10.11.47.60>): result: mailMessageStore=1/1/2/0/8/7/2/1120872_91093 mailQuota=52428800; mailQuota,mailMessageStore unused 2019-10-02 09:22:19 auth: Debug: ldap(test.pop(a)test.xxx.it,10.11.47.60<mailto:test.pop@test.xxx.it,10.11.47.60>): Finished userdb lookup 2019-10-02 09:22:19 auth: Debug: userdb out: USER 1 test.pop(a)test.xxx.it<mailto:test.pop@test.xxx.it> home=/store/mailbox/mailbox_test/1/1/2/0/8/7/2/1120872_91093 quota_rule=*:bytes=52428800 mail_plugins+= 2019-10-02 09:22:19 doveadm(test.pop(a)test.xxx.it<mailto:test.pop@test.xxx.it>)<180667><MO3BGytQlF27wQIAxhuf8Q>: Fatal: master: service(doveadm): child 180667 killed with signal 11 (core dumped) 2019-10-02 09:22:19 auth: Debug: master in: USER 1 test.pop(a)test.xxx.it<mailto:test.pop@test.xxx.it> service=doveadm lip=192.160.10.100 lport=924 rip=10.11.47.60 rport=56515 2019-10-02 09:22:19 auth: Debug: ldap(test.pop(a)test.xxx.it,10.11.47.60<mailto:test.pop@test.xxx.it,10.11.47.60>): Performing userdb lookup This problem occurs only with the quota plugin enabled. Can you help me? Best regards Domenico ----------------------------------------------------- (gdb) #0 clear (this=0x0) at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/util/VoidMap.h:123 #1 lucene::search::FieldSortedHitQueue::_shutdown () at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/search/FieldSortedHitQueue.cpp:60 #2 0x00007f4b37a62e96 in _lucene_shutdown () at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/StdHeader.cpp:33 #3 0x00007f4b3b2f2fbb in module_dir_deinit (modules=<optimized out>) at module-dir.c:578 #4 0x00007f4b3b2f3001 in module_dir_unload (modules=modules@entry=0x7f4b3b8e1380 <mail_storage_service_modules>) at module-dir.c:590 #5 0x00007f4b3b5dd264 in mail_storage_service_deinit (_ctx=_ctx@entry=0x55ea409b7838) at mail-storage-service.c:1730 #6 0x000055ea3f4a3d35 in doveadm_mail_cmd_exec (ctx=ctx@entry=0x55ea409b77f8, wildcard_user=wildcard_user@entry=0x0) at doveadm-mail.c:673 #7 0x000055ea3f4a4bbd in doveadm_cmd_ver2_to_mail_cmd_wrapper (cctx=<optimized out>) at doveadm-mail.c:1144 #8 0x000055ea3f4b5c98 in doveadm_cmd_run_ver2 (argc=argc@entry=1, argv=argv@entry=0x55ea40997150, cctx=cctx@entry=0x7fff9a1cb990) at doveadm-cmd.c:574 #9 0x000055ea3f4ba020 in doveadm_cmd_server_run_ver2 (cctx=0x7fff9a1cb990, argv=0x55ea40997150, argc=1, conn=0x55ea409ebbd8) at client-connection-tcp.c:178 #10 doveadm_cmd_handle (cctx=0x7fff9a1cb990, argv=0x55ea40997150, argc=1, cmd_name=<optimized out>, conn=0x55ea409ebbd8) at client-connection-tcp.c:342 #11 client_handle_command (args=<optimized out>, conn=0x55ea409ebbd8) at client-connection-tcp.c:415 #12 client_connection_tcp_input (conn=0x55ea409ebbd8) at client-connection-tcp.c:561 #13 0x00007f4b3b2e855f in io_loop_call_io (io=0x55ea409c5b10) at ioloop.c:704 #14 0x00007f4b3b2e9fa3 in io_loop_handler_run_internal (ioloop=ioloop@entry=0x55ea4099fcb0) at ioloop-epoll.c:221 #15 0x00007f4b3b2e8666 in io_loop_handler_run (ioloop=ioloop@entry=0x55ea4099fcb0) at ioloop.c:756 #16 0x00007f4b3b2e8888 in io_loop_run (ioloop=0x55ea4099fcb0) at ioloop.c:729 #17 0x00007f4b3b25b2d3 in master_service_run (service=0x55ea4099fb40, callback=callback@entry=0x55ea3f4bd260 <client_connected>) at master-service.c:781 #18 0x000055ea3f493421 in main (argc=1, argv=0x55ea4099f890) at main.c:151 (gdb) bt full #0 clear (this=0x0) at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/util/VoidMap.h:123 No locals. #1 lucene::search::FieldSortedHitQueue::_shutdown () at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/search/FieldSortedHitQueue.cpp:60 No locals. #2 0x00007f4b37a62e96 in _lucene_shutdown () at /usr/src/debug/clucene-core-2.3.3.4/src/core/CLucene/StdHeader.cpp:33 No locals. #3 0x00007f4b3b2f2fbb in module_dir_deinit (modules=<optimized out>) at module-dir.c:578 _data_stack_cur_id = 4 module = 0x55ea40a048b0 rev = 0x55ea4099ac18 i = <optimized out> count = 6 #4 0x00007f4b3b2f3001 in module_dir_unload (modules=modules@entry=0x7f4b3b8e1380 <mail_storage_service_modules>) at module-dir.c:590 module = <optimized out> next = <optimized out> #5 0x00007f4b3b5dd264 in mail_storage_service_deinit (_ctx=_ctx@entry=0x55ea409b7838) at mail-storage-service.c:1730 ctx = 0x55ea409f0bf8 #6 0x000055ea3f4a3d35 in doveadm_mail_cmd_exec (ctx=ctx@entry=0x55ea409b77f8, wildcard_user=wildcard_user@entry=0x0) at doveadm-mail.c:673 cctx = <optimized out> cli = <optimized out> ret = <optimized out> error = 0x7f4b3b22d2f7 <__x86_return_thunk+5> "\363\220\017\256\350\353\371H\215d$\b\303\350\a" #7 0x000055ea3f4a4bbd in doveadm_cmd_ver2_to_mail_cmd_wrapper (cctx=<optimized out>) at doveadm-mail.c:1144 mctx = 0x55ea409b77f8 wildcard_user = <optimized out> fieldstr = 0x55ea40997310 "͒\t7K\177" pargv = {arr = {buffer = 0x55ea409b7a28, element_size = 8}, v = 0x55ea409b7a28, v_modifiable = 0x55ea409b7a28} full_args = {arr = {buffer = <optimized out>, element_size = 8}, v = <optimized out>, v_modifiable = <optimized out>} i = <optimized out> cli = <optimized out> tcp_server = <optimized out> mail_cmd = {alloc = 0x7f4b37098d00 <cmd_quota_get_alloc>, name = 0x7f4b370992b6 "quota get", usage_args = 0x7f4b37099291 ""} dashdash = 0x55ea3f4e07ca "--" args_pos = 1 #8 0x000055ea3f4b5c98 in doveadm_cmd_run_ver2 (argc=argc@entry=1, argv=argv@entry=0x55ea40997150, cctx=cctx@entry=0x7fff9a1cb990) at doveadm-cmd.c:574 param = <optimized out> pargv = {arr = {buffer = 0x55ea40997410, element_size = 104}, v = 0x55ea40997410, v_modifiable = 0x55ea40997410} opts = {arr = {buffer = <optimized out>, element_size = 32}, v = <optimized out>, v_modifiable = <optimized out>} pargc = 4 c = -1 li = 102607314 pool = 0x55ea40997240 optbuf = 0x55ea40997258 __func__ = "doveadm_cmd_run_ver2" #9 0x000055ea3f4ba020 in doveadm_cmd_server_run_ver2 (cctx=0x7fff9a1cb990, argv=0x55ea40997150, argc=1, conn=0x55ea409ebbd8) at client-connection-tcp.c:178 No locals. #10 doveadm_cmd_handle (cctx=0x7fff9a1cb990, argv=0x55ea40997150, argc=1, cmd_name=<optimized out>, conn=0x55ea409ebbd8) at client-connection-tcp.c:342 mail_cmd = <optimized out> mctx = <optimized out> cmd_ver2 = <optimized out> prev_ioloop = 0x55ea4099fcb0 cmd = 0x0 #11 client_handle_command (args=<optimized out>, conn=0x55ea409ebbd8) at client-connection-tcp.c:415 cctx = {cmd = 0x55ea409b53d8, argc = 4, argv = 0x55ea40997448, username = 0x55ea40997119 "test.pop(a)test.xxx.it"<mailto:test.pop@test.xxx.it>, local_ip = {family = 2, u = {ip6 = {__in6_u = { __u6_addr8 = "\300\240\nd", '\000' <repeats 11 times>, __u6_addr16 = {41152, 25610, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {1678418112, 0, 0, 0}}}, ip4 = { s_addr = 1678418112}}}, remote_ip = {family = 2, u = {ip6 = {__in6_u = {__u6_addr8 = "\n\v/<", '\000' <repeats 11 times>, __u6_addr16 = {2826, 15407, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {1009715978, 0, 0, 0}}}, ip4 = {s_addr = 1009715978}}}, local_port = 924, remote_port = 54042, conn_type = DOVEADM_CONNECTION_TYPE_TCP, input = 0x55ea409b0db0, output = 0x55ea409b6cf0} flags = <optimized out> cmd_name = <optimized out> argc = <optimized out> ---Type <return> to continue, or q <return> to quit--- #12 client_connection_tcp_input (conn=0x55ea409ebbd8) at client-connection-tcp.c:561 args = <optimized out> _data_stack_cur_id = 3 line = <optimized out> ok = true minor = 0 #13 0x00007f4b3b2e855f in io_loop_call_io (io=0x55ea409c5b10) at ioloop.c:704 ioloop = 0x55ea4099fcb0 t_id = 2 __func__ = "io_loop_call_io" #14 0x00007f4b3b2e9fa3 in io_loop_handler_run_internal (ioloop=ioloop@entry=0x55ea4099fcb0) at ioloop-epoll.c:221 ctx = 0x55ea409a57a0 events = <optimized out> list = 0x55ea409e9e80 io = <optimized out> tv = {tv_sec = 2147483, tv_usec = 0} events_count = <optimized out> msecs = <optimized out> ret = 1 i = 0 call = <optimized out> __func__ = "io_loop_handler_run_internal" #15 0x00007f4b3b2e8666 in io_loop_handler_run (ioloop=ioloop@entry=0x55ea4099fcb0) at ioloop.c:756 __func__ = "io_loop_handler_run" #16 0x00007f4b3b2e8888 in io_loop_run (ioloop=0x55ea4099fcb0) at ioloop.c:729 __func__ = "io_loop_run" #17 0x00007f4b3b25b2d3 in master_service_run (service=0x55ea4099fb40, callback=callback@entry=0x55ea3f4bd260 <client_connected>) at master-service.c:781 No locals. #18 0x000055ea3f493421 in main (argc=1, argv=0x55ea4099f890) at main.c:151 set_roots = {0x7f4b3b57cd00 <master_service_ssl_setting_parser_info>, 0x55ea3f7026a0 <doveadm_setting_parser_info>, 0x0} input = {roots = 0x7fff9a1cbb70, config_path = 0x0, preserve_environment = false, preserve_user = false, preserve_home = false, never_exec = false, use_sysexits = false, parse_full_config = false, module = 0x55ea3f4dcd3a "doveadm", service = 0x55ea3f4dcd3a "doveadm", username = 0x0, local_ip = {family = 0, u = {ip6 = {__in6_u = { __u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, remote_ip = {family = 0, u = { ip6 = {__in6_u = {__u6_addr8 = '\000' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}, ip4 = {s_addr = 0}}}, local_name = 0x0} output = {specific_services = 0x0, service_uses_local = false, service_uses_remote = false, used_local = false, used_remote = false, permission_denied = false} error = 0x7f4b3aca3ca7 "__vdso_getcpu" c = <optimized out> (gdb) # 2.3.7.2 (3c910f64b): /new_config/dovecot/dovecot_test/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 3.10.0-957.21.3.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: pop10 auth_debug = yes auth_master_user_separator = * auth_username_format = base_dir = /data/dovecot/var/run/dovecot_test default_vsz_limit = 768 M dict { sqlquota = mysql:/new_config/dovecot/common/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it first_valid_gid = 101 first_valid_uid = 102 imap_id_send = import_environment = TZ info_log_path = /LOGS/dovecot/dovecot_test.log instance_name = dovecot_test listen = dovecot_test log_path = /LOGS/dovecot/dovecot_test.log log_timestamp = "%Y-%m-%d %H:%M:%S " mail_gid = 101 mail_location = maildir:%h/Maildir mail_max_userip_connections = 50 mail_plugins = quota mail_log notify virtual fts fts_lucene mail_uid = 102 maildir_broken_filename_sizes = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vnd.dovecot.debug mbox_write_locks = fcntl namespace { hidden = yes list = no location = virtual:/new_config/dovecot/common/virtual:INDEX=~/virtual:SUBSCRIPTIONS=.subscriptions/%u prefix = Messaggi in arrivo. separator = . subscriptions = no } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . subscriptions = yes type = private } passdb { args = /new_config/dovecot/common/passwd.masterusers driver = passwd-file master = yes } passdb { args = /new_config/dovecot/dovecot_test/dovecot-ldap.conf driver = ldap } passdb { args = /new_config/dovecot/common/dovecot-ldap-multiuser.conf driver = ldap master = yes } passdb { args = /new_config/dovecot/common/dovecot-ldap-webmaillight.conf.ext driver = ldap master = yes } plugin { fts = lucene fts_autoindex = yes fts_autoindex_max_recent = 1000 fts_lucene = mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change save mailbox_create mail_log_fields = uid box msgid size flags quota = dict:User quota::proxy::sqlquota quota_rule2 = INBOX.Trash:storage=+100M sieve_default = /new_config/dovecot/common/default.sieve sieve_extensions = +vnd.dovecot.debug } postmaster_address = posta(a)fooo.it<mailto:posta@fooo.it> service anvil { client_limit = 8000 } service auth { client_limit = 12000 unix_listener auth-userdb { mode = 0600 } } service dict { process_limit = 7500 process_min_avail = 10 unix_listener dict { mode = 0600 user = dovecot } } service doveadm { chroot = client_limit = 1 drop_priv_before_exec = no executable = doveadm-server extra_groups = group = idle_kill = 0 inet_listener { port = 924 } privileged_group = process_limit = 0 process_min_avail = 10 protocol = service_count = 100 type = unix_listener doveadm-server { group = mode = 0600 user = } user = } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_limit = 5000 process_min_avail = 10 } service imap { drop_priv_before_exec = yes process_limit = 5000 process_min_avail = 10 } service lmtp { inet_listener lmtp { port = 24 } process_limit = 2500 process_min_avail = 10 } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service managesieve { drop_priv_before_exec = yes process_limit = 1024 } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } process_limit = 1000 process_min_avail = 5 } service pop3 { drop_priv_before_exec = yes process_limit = 1000 process_min_avail = 5 } ssl_cert = </new_config/dovecot/common/certs/dovecot.pem ssl_key = # hidden, use -P to show it userdb { args = /new_config/dovecot/dovecot_test/dovecot-ldap.conf driver = ldap } protocol lmtp { mail_plugins = quota mail_log notify sieve virtual } protocol lda { mail_plugins = quota mail_log notify sieve virtual } protocol imap { mail_plugins = quota imap_quota mail_log notify virtual } protocol pop3 { mail_plugins = quota mail_log notify virtual pop3_uidl_format = UID%u-%v }

2 1

sieve cli
by Matthew Broadhead 03 Oct '19

03 Oct '19

i am using dovecot-2.2.36-3.el7_7.1.x86_64 on centos 7 is it possible to activate / deactivate a sieve script for a mailbox from the command line? my mailboxes are currently stores in /../vmail/domain.tld/username if i activate / deactivate a filter set using roundcube (webmail system) then it creates or deletes a symbolic link /../vmail/domain.tld/username/dovecot.sieve which points to a file /../vmail/domain.tld/username/sieve/managesieve.sieve. if i create this symbolic link manually it doesn't seem to work

3 4

Tool to give information about IP's that logged into the accounts
by Jorge Bastos 03 Oct '19

03 Oct '19

Howdy, I'm looking for a tool that can give me the information about the IP's that have logged in the accounts, for history purpose. Is there something that can grab the logs and create a database and give me this information in some nice web interface or so? Thanks in advanced, Jorge,

1 0

Problem with converting mdbox to MailDir
by Adam Raszkiewicz 03 Oct '19

03 Oct '19

I have a problem to convert mdbox to MailDir. Log from that process looks like: /bin/dsync -Dv -u user(a)domian.com mirror maildir:/tmp/destination/mailboxes/user@domian.com Debug: Loading modules from directory: /lib/dovecot Debug: Module loaded: /lib/dovecot/lib01_acl_plugin.so Debug: Loading modules from directory: /lib/dovecot/doveadm Debug: Module loaded: /lib/dovecot/doveadm/lib10_doveadm_acl_plugin.so Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: /lib/dovecot/doveadm/lib10_doveadm_expire_plugin.so: undefined symbol: expire_set_lookup (this is usually intentional, so just ignore this message) Debug: Skipping module doveadm_quota_plugin, because dlopen() failed: /lib/dovecot/doveadm/lib10_doveadm_quota_plugin.so: undefined symbol: quota_user_module (this is usually intentional, so just ignore this message) Debug: Module loaded: /lib/dovecot/doveadm/lib10_doveadm_sieve_plugin.so Debug: Skipping module doveadm_fts_plugin, because dlopen() failed: /lib/dovecot/doveadm/lib20_doveadm_fts_plugin.so: undefined symbol: fts_list_backend (this is usually intentional, so just ignore this message) doveadm(user(a)domian.com): Debug: Effective uid=503, gid=503, home=/var/mailboxes/%2Mu/%2.2Mu/%u doveadm(user(a)domian.com): Debug: Home dir not found: /var/mailboxes/%2Mu/%2.2Mu/%u doveadm(user(a)domian.com): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=mdbox:/var/mailboxes/64/b1/user@domian.com doveadm(user(a)domian.com): Debug: fs: root=/var/mailboxes/64/b1/user(a)domian.com, index=, indexpvt=, control=, inbox=, alt= doveadm(user(a)domian.com): Debug: acl: initializing backend with data: vfile doveadm(user(a)domian.com): Debug: acl: acl username = user(a)domian.com doveadm(user(a)domian.com): Debug: acl: owner = 1 doveadm(user(a)domian.com): Debug: acl vfile: Global ACLs disabled doveadm(user(a)domian.com): Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=mdbox:/var/mailboxes/%2Mu/%2.2Mu/%u doveadm(user(a)domian.com): Debug: shared: root=/var/run/dovecot, index=, indexpvt=, control=, inbox=, alt= doveadm(user(a)domian.com): Debug: acl: initializing backend with data: vfile doveadm(user(a)domian.com): Debug: acl: acl username = user(a)domian.com doveadm(user(a)domian.com): Debug: acl: owner = 0 doveadm(user(a)domian.com): Debug: acl vfile: Global ACLs disabled doveadm(user(a)domian.com): Debug: acl vfile: file /var/mailboxes/64/b1/user(a)domian.com/mailboxes/INBOX/dbox-Mails/dovecot-acl not found doveadm(user(a)domian.com): Debug: acl vfile: file /var/mailboxes/64/b1/user(a)domian.com/mailboxes/Drafts/dbox-Mails/dovecot-acl not found doveadm(user(a)domian.com): Debug: acl vfile: file /var/mailboxes/64/b1/user(a)domian.com/mailboxes/Sent/dbox-Mails/dovecot-acl not found doveadm(user(a)domian.com): Debug: acl vfile: file /var/mailboxes/64/b1/user(a)domian.com/mailboxes/Trash/dbox-Mails/dovecot-acl not found doveadm(user(a)domian.com): Debug: Namespace : Using permissions from /var/mailboxes/64/b1/user(a)domian.com: mode=0700 gid=default dsync(user(a)domian.com): Debug: Effective uid=503, gid=503, home=/var/mailboxes/%2Mu/%2.2Mu/%u dsync(user(a)domian.com): Debug: Home dir not found: /var/mailboxes/%2Mu/%2.2Mu/%u dsync(user(a)domian.com): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/tmp/destination/mailboxes/user@domian.com dsync(user(a)domian.com): Debug: maildir++: root=/tmp/destination/mailboxes/user(a)domian.com, index=, indexpvt=, control=, inbox=/tmp/destination/mailboxes/user(a)domian.com, alt= dsync(user(a)domian.com): Debug: Namespace : /tmp/destination/mailboxes/user(a)domian.com doesn't exist yet, using default permissions dsync(user(a)domian.com): Debug: Namespace : Using permissions from /tmp/destination/mailboxes/user(a)domian.com: mode=0700 gid=default dsync(user(a)domian.com): Debug: acl: initializing backend with data: vfile dsync(user(a)domian.com): Debug: acl: acl username = user(a)domian.com dsync(user(a)domian.com): Debug: acl: owner = 1 dsync(user(a)domian.com): Debug: acl vfile: Global ACLs disabled dsync(user(a)domian.com): Debug: Namespace : type=shared, prefix=shared/%u/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=mdbox:/var/mailboxes/%2Mu/%2.2Mu/%u dsync(user(a)domian.com): Debug: shared: root=/var/run/dovecot, index=, indexpvt=, control=, inbox=, alt= dsync(user(a)domian.com): Debug: acl: initializing backend with data: vfile dsync(user(a)domian.com): Debug: acl: acl username = user(a)domian.com dsync(user(a)domian.com): Debug: acl: owner = 0 dsync(user(a)domian.com): Debug: acl vfile: Global ACLs disabled dsync(user(a)domian.com): Error: User initialization failed: namespace configuration error: All list=yes namespaces must use the same separator but when I will specify namespace to the inbox like /bin/dsync -Dv -u user(a)domian.com mirror maildir:/tmp/destination/mailboxes/user@domian.com -n inbox it throws different error: doveadm(user(a)domian.com): Debug: Namespace : Using permissions from /var/mailboxes/64/b1/user(a)domian.com: mode=0700 gid=default doveadm(user(a)domian.com): Fatal: execvp(maildir:/tmp/destination/mailboxes/user@domian.com) failed: No such file or directory dsync-local(user(a)domian.com): Error: read(remote) failed: EOF (version not received when /tmp/destination/mailboxes/user(a)domian.com directory exists What I’m doing wrong in the process? -- Adam

1 2

lmtp and virtual users
by David Wells - Alfavinil S.A. 02 Oct '19

02 Oct '19

Good afternoon. I have dovecot setup to authenticate virtual users using either gssapi or doind a bind to an ldap server to achieve a single sign on capable imap server connected to a samba active directory DC. What I am also trying to achieve is to have dovecot's lmtp daemon handle the mails passed from postfix. However, the only way I've gotten this to work is setting allow_all_users = yes in the userdb but this causes lmtp to deliver mails to non existant accounts without rejection. I've been searching but haven't found a way to set this same thing up but having dovecots lmtp check the validity of the mails recipient against the same samba AD DC through ldap before delivering it and rejecting unknown email addresses. Could someone please provide some insight into how to achieve this? Thank you very much in advance. Best regards, David Wells.

3 7

Unable to connect/authenticate after Debian SSL update
by paul 02 Oct '19

02 Oct '19

Just applied Debian SSL updates, due to vulnerabilities reported: "Package : openssl CVE ID : CVE-2019-1547 CVE-2019-1549 CVE-2019-1563 Three security issues were discovered in OpenSSL: A timing attack against ECDSA, a padding oracle in PKCS7_dataDecode() and CMS_decrypt_set1_pkey() and it was discovered that a feature of the random number generator (RNG) intended to protect against shared RNG state between parent and child processes in the event of a fork() syscall was not used by default. For the oldstable distribution (stretch), these problems have been fixed in version 1.1.0l-1~deb9u1. For the stable distribution (buster), these problems have been fixed in version 1.1.1d-0+deb10u1." I am running Buster. Upon installing these updates, Dovecot immediately stopped allowing authentication: Oct 1 16:47:11 relay monit[539]: 'dovecot' failed protocol test [IMAP] at [localhost]:993 [TCP/IP TLS] -- SSL connection error: error:00000000:lib(0):func(0):reason(0) Oct 1 16:50:22 relay monit[539]: 'dovecot' failed protocol test [IMAP] at [localhost]:993 [TCP/IP TLS] -- SSL connection error: error:00000000:lib(0):func(0):reason(0) and Oct 01 16:51:18 imap-login: Info: Disconnected: TLS initialization failed. (no auth attempts in 0 secs): user=<>, rip=71.198.57.170, lip=10.0.0.81, session=<0EdTB+KT+/NHxjmq> Each time this occurs, dovecot restarts: Oct 01 16:50:23 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 16:50:42 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 16:51:10 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 16:53:35 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 16:56:46 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 16:59:57 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) Oct 01 17:03:08 master: Info: Dovecot v2.3.7.2 (3c910f64b) starting up for pop3, imap (core dumps disabled) I am at a loss. Dovecot had been working fine for ages. It's not clear to me why a routine SSL update would completely break it. I'm unclear how to proceed. This is a small personal server, but nevertheless I have a number of people using it who rely on it. Here is my local.conf ( I added the ssl_protocols and ssl_min_protocol entries just a few minutes ago while attempting to resolve) auth_cache_size = 100 k auth_cache_ttl = 12 hours auth_cache_negative_ttl = 12 hours auth_cache_verify_password_with_worker=yes auth_verbose = yes auth_failure_delay = 7 secs default_client_limit = 500 default_process_limit = 50 default_vsz_limit = 100 M verbose_proctitle = yes protocols = pop3 imap pop3_uidl_format = %08Xu%08Xv imap_idle_notify_interval = 244 secs info_log_path = /var/log/dovecot-info.log log_path = /var/log/dovecot-error.log maildir_very_dirty_syncs=yes mail_location = maildir:~/Maildir mailbox_idle_check_interval = 244 secs mailbox_list_index = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = passwd-file args = /etc/dovecot/deny deny = yes } passdb { driver = pam } userdb { driver = passwd } service auth { unix_listener auth-client { mode = 0660 user = Debian-exim } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } protocol imap { mail_max_userip_connections = 20 } service imap { unix_listener imap-master { user = dovecot } } imap_hibernate_timeout = 1 mins service imap { extra_groups = dovenull } service imap-hibernate { unix_listener imap-hibernate { mode = 0660 group = dovenull } } ssl = required ssl_protocols = TLSv1 TLSv1.1 TLSv1.2 ssl_min_protocol=TLSv1 ssl_dh=</etc/dovecot/dh.pem ssl_cert = </etc/letsencrypt/live/relay.anastrophe.com/fullchain.pem ssl_key = </etc/letsencrypt/live/relay.anastrophe.com/privkey.pem

1 1

Lost mails with sieve "duplicate" extension in case of failure
by Hanno Stock 01 Oct '19

01 Oct '19

Hi! we just experienced the following issue: We have a global sieve_before script using the duplicate extension. require ["duplicate", "imap4flags"]; if duplicate { discard; } Now the storage of our mailbox store got full and lmtp deliveries started to fail. This resulted in logs like this: Sep 25 16:14:56 mail-rc1 dovecot: lmtp(USERNAME): Error: o_stream_send_istream(/var/mail/vhosts/mail.COMPANY.com/USERNAME/.dovecot/t… failed: No space left on device Sep 25 16:14:56 mail-rc1 dovecot: lmtp(USERNAME): Error: write(/var/mail/vhosts/mail.COMPANY.com/USERNAME/.dovecot/tmp/1569420896.M6… failed: No space left on device Sep 25 16:14:56 mail-rc1 dovecot: lmtp(USERNAME): Error: KT9HJGB2i128FgAATXMPig: sieve: msgid=<redmine.journal-441799.20190925141453.94a97fd570706f2f(a)mail.COMPANY.com>: failed to store into mailbox 'INBOX': Internal error occurred. Refer to server log for more information. [2019-09-25 16:14:56] Sep 25 16:14:56 mail-rc1 dovecot: lmtp(USERNAME): Error: KT9HJGB2i128FgAATXMPig: sieve: Execution of script /mnt/data/var/mail/vhosts/mail.COMPANY.com/USERNAME/.sieve/.dovecot.sieve was aborted due to temporary failure (user logfile /mnt/data/var/mail/vhosts/mail.COMPANY.com/USERNAME/.sieve/.dovecot.sieve.log may reveal additional details) Sep 25 16:14:56 mail-rc1 postfix/lmtp[5851]: 4D27690AC: to=<USERNAME(a)mail.COMPANY.com>, orig_to=<USER.NAME(a)COMPANY.com>, relay=mail-rc1.bvd.COMPANY.x[private/dovecot-lmtp], delay=1.3, delays=1.3/0/0/0.01, dsn=4.2.0, status=deferred (host mail-rc1.bvd.COMPANY.x[private/dovecot-lmtp] said: 451 4.2.0 <USERNAME(a)mail.COMPANY.com> Internal error occurred. Refer to server log for more information. [2019-09-25 16:14:56] (in reply to end of DATA command)) So far, so good... A 451 response is what we wanted. However on the next delivery attempt the following happens: Sep 25 16:24:00 mail-rc1 postfix/lmtp[7040]: 4D27690AC: to=<USERNAME(a)mail.COMPANY.com>, orig_to=<USER.NAME(a)COMPANY.com>, relay=mail-rc1.bvd.COMPANY.x[private/dovecot-lmtp], delay=545, delays=545/0.09/0.02/0.01, dsn=2.0.0, status=sent (250 2.0.0 <USERNAME(a)mail.COMPANY.com> DBcCEYB4i11qGwAATXMPig Saved) Sep 25 16:24:00 mail-rc1 dovecot: lmtp(USERNAME): DBcCEYB4i11qGwAATXMPig: sieve: msgid=<redmine.journal-441799.20190925141453.94a97fd570706f2f(a)mail.COMPANY.com>: marked message to be discarded if not explicitly delivered (discard action) Sep 25 16:24:00 mail-rc1 postfix/lmtp[7040]: 4D27690AC: to=<USERNAME(a)mail.COMPANY.com>, orig_to=<USER.NAME(a)COMPANY.com>, relay=mail-rc1.bvd.COMPANY.x[private/dovecot-lmtp], delay=545, delays=545/0.09/0.02/0.01, dsn=2.0.0, status=sent (250 2.0.0 <USERNAME(a)mail.COMPANY.com> DBcCEYB4i11qGwAATXMPig Saved) As the duplicate extension has already seen the mail, it is now immediately discarded. RFC 7352 however explicitly states: Implementations MUST only update the internal duplicate-tracking list when the Sieve script execution finishes successfully. If failing script executions add the unique ID to the duplicate-tracking list, all "duplicate" tests in the Sieve script would erroneously yield "true" for the next delivery attempt of the same message. Dovecot seems not to honour this specification. Maybe this is because the "before_script" is not the script that fails, but the subsequent scripts fail? Am I missing some configuration option that would propagate the subsequent failure back to the before_script? Or is this a general limitation of the before_script mechanism? Any help appreciated how to alleviate this issue! Best regards Hanno --- Filesystem: ext4 Dovecot config: # 2.2.27 (c0f36b0): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.16 (fed8554) # OS: Linux 4.9.0-11-amd64 x86_64 Debian 9.11 auth_cache_negative_ttl = 0 auth_cache_size = 1 M auth_cache_ttl = 2 hours auth_mechanisms = plain login auth_username_format = %Ln mail_gid = vmail mail_home = /var/mail/vhosts/mail.COMPANY.com/%n mail_location = maildir:~/.dovecot mail_plugins = " acl" mail_privileged_group = vmail mail_uid = vmail mailbox_list_index = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext editheader imapflags notify namespace { hidden = yes list = no location = maildir:~/.dovecot-top-namespace prefix = separator = . subscriptions = yes type = private } namespace { location = maildir:/var/mail/vhosts/mail.COMPANY.com/%%n/.dovecot:INDEXPVT=/var/mail/v… prefix = shared.%%u. separator = . subscriptions = no type = shared } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db sieve = file:/var/mail/vhosts/mail.COMPANY.com/%n/.sieve/sieve;active=/var/mail/vho… sieve_after = /var/mail/sieve/global-after.sieve sieve_before = /var/mail/sieve/global-before.sieve sieve_default = /var/mail/sieve/global.sieve sieve_extensions = +imapflags +notify +editheader sieve_global = /var/mail/sieve } protocols = imap lmtp sieve service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0600 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } process_limit = 9000 } service imap { process_limit = 9000 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } ssl = required ssl_cert = </etc/letsencrypt/live/mail.COMPANY.com/fullchain.pem ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = " sieve" } protocol lda { mail_plugins = " sieve" } protocol imap { mail_max_userip_connections = 30 mail_plugins = " acl imap_acl" } protocol sieve { mail_debug = yes }

2 2

Mailbox INBOX sync: mailbox_delete failed
by Alex La 01 Oct '19

01 Oct '19

Hi. When I run the backup I always get this error. ``` [root@mail.DOMAIN.com:~]# doveadm -o mail_fsync=never backup -D -R -u office(a)DOMAIN.com imapc: dsync(office(a)DOMAIN.com): Info: imapc(imap.mailbox.org:993): Connected to 2001:67c:2050:106::143:199:993 (local 2a01:4f8:c2c:6d05::1:59928) dsync(office(a)DOMAIN.com): Info: Mailbox deleted: Drafts dsync(office(a)DOMAIN.com): Error: Mailbox INBOX sync: mailbox_delete failed: INBOX can't be deleted. ``` The suggested solution from this mail works, but is this still the best solution for the error above? https://dovecot.org/pipermail/dovecot/2016-January/102988.html My versions are # 2.2.36.4 (baf9232c1): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.24.2 (aaba65b7) # OS: Linux 3.10.0-1062.1.1.el7.x86_64 x86_64 CentOS Linux release 7.7.1908 (Core) Best regards Alex

2 2

Migration
by Hans Brage 01 Oct '19

01 Oct '19

Hi! I'm currently running an small imap-server on Dovecot 2.2.4 but will retire that server. I've set up an new server with Dovecot 2.3.4 and will migrate the mailboxes (maildir-format) from the old to the new server. I'm planning to restructure the accounts a bit when migrating so I need to move them one by one. Its only a few so thats not a big issue. Both servers are using virtual accounts (users file). I've understood that best method for migration is to run doveadm backup -R from the new server. But I really cant figure out what other parameters or settings that I need to perform that task and if it should be run as user vmail or root. Would be greatful for any tips, hints, links or similiar. Regards, Hans

6 9

Best way to move mail from one server to another
by James Brown 01 Oct '19

01 Oct '19

I’d like to migrate to a new server. I only need to transfer the mail store, have already done the users. I’ve seen different recommendations: IMAP-Sync Rsync Doveadmin backup and dsync What are the pros and cons of each? What would be best for me? I’m thinking that Doveadmin backup is the way to go. Both old and new servers are on same network. New server is running Dovecot 2.3.2.1, old server is 2.2.32. macOS X. Does anyone have any advice or examples? Thanks, James.

13 29

courier to dovecot migration
by tovises 01 Oct '19

01 Oct '19

I have a quite old home server based on Debian 6.x packages using courier imap server (exim4, fetchmail, courier, apache2, squirrelmail) to keep my and my wife emails (about 25G). I want renew my server to Debian 10 (buster) and got a recommendation to use dovecot instead of courier. For this purpose I'm using a different PC as a sandbox. Debian 10 currently offer dovecot version 2.3.4.1 Installation was "peaceful" but stuck with the migration. I have choose migration using dsync, from Wiki I was choose this command: For per-user user/passwords use: doveadm -o imapc_user=foo -o pop3c_user=foo -o imapc_password=bar -o pop3c_password=bar backup -R -u user@domain imapc: (foo and bar placed real username and password) But I get error: doveadm(tovis(a)nusi.tovis-lab.mydomain.org): Error: User doesn't exist Strongly I have no real domain, I'm using "freedns". "nusi" is the local name of my old server, "tovis-lab" is conjunction with "mydomain.org" choose from freedns. I was trying short as "nusi" which is in /etc/hosts file even ip address but the same result. 143 and 943 ports are working only inside the firewall (OpenWrt). I was checked using telnet courier on the "remote" box and dovecot on the localhost. I was able to login. What should I use as "user@domain" in this situation? tovis

4 10

Mail-crypt won't encrypt emails
by Serveria Support 01 Oct '19

01 Oct '19

Hi, We're running Dovecot 2.2.36 and we need to set up the mail-crypt plugin to encrypt all incoming and outgoing emails. Outgoing emails seem to get encrypted fine but the incoming ones don't. We tried everything including this config: mail_attribute_dict = file:%h/Maildir/dovecot-attributes mail_plugins = $mail_plugins mail_crypt plugin { mail_crypt_global_private_key = <ecprivkey.pem mail_crypt_global_public_key = <ecpubkey.pem mail_crypt_save_version = 2 } also this one: plugin { mail_crypt_curve = prime256v1 mail_crypt_save_version = 2 } but to no avail. There are no visible errors, Dovecot restarts fine and outgoing emails get encrypted. Any ideas?

1 0

Sieve replication - does not replicate
by Daniel Botting 30 Sep '19

30 Sep '19

Hi, I have two servers replicating mail as required, the directory structure (per user), however they will not replicate the sieve scripts directory: server 1 Maildir sieve server 2 Maildir Output of doveconf -n on server 1: # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:51: ssl_protocols has been replaced by ssl_min_protocol doveconf: Error: Could not find a minimum ssl_min_protocol setting from ssl_protocols = !SSLv2 !SSLv3: Unrecognized protocol 'SSLv2' doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:51: ssl_protocols has been replaced by ssl_min_protocol doveconf: Error: Could not find a minimum ssl_min_protocol setting from ssl_protocols = !SSLv2 !SSLv3: Unrecognized protocol 'SSLv2' # OS: Linux 4.19.0-6-amd64 x86_64 Debian 10.1 # Hostname: a_tld auth_verbose = yes default_vsz_limit = 0 doveadm_password = # hidden, use -P to show it first_valid_gid = 8 first_valid_uid = 8 last_valid_gid = 8 last_valid_uid = 8 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes mail_gid = 8 mail_location = maildir:~/Maildir mail_plugins = " notify replication" mail_uid = 8 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext editheader imapflags namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { mail_replica = tcps:a_tld:12345 sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_extensions = +editheader +imapflags } protocols = " imap sieve pop3" replication_max_conns = 4 service aggregator { fifo_listener replication-notify-fifo { user = mail } unix_listener replication-notify { user = mail } } service auth { unix_listener /var/run/dovecot-exim-bridge { mode = 0660 user = Debian-exim } } service doveadm { inet_listener { port = 12345 ssl = yes } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } process_limit = 512 process_min_avail = 4 service_count = 1 } service imap { process_limit = 1024 } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 1 service_count = 8 vsz_limit = 256 M } service managesieve { process_limit = 1024 } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0666 } } ssl = required ssl_cert = </where/the_cert_is_installed/fullchain.pem ssl_cipher_list = ALL:!LOW:!SSLv2:!EXP:!aNULL ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap override_fields = home=/var/mail/%u uid=mail gid=mail } protocol lda { mail_plugins = " notify replication sieve" } protocol imap { mail_max_userip_connections = 32 mail_plugins = " notify replication" } protocol sieve { mail_max_userip_connections = 10 managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 } The only error message I can see in the logs (/var/log/mail.err) is, this is not for every user and is only occasionally: Sep 30 14:46:34 imap2 dovecot: lda(a_user)<1306><f0JXJjoHkl0aBQAAZJ7A9A>: Error: sieve: Failed to initialize script execution: Invalid postmaster_address: invalid address `postmaster@' specified for the postmaster_address setting Any suggestions would be much appreciated. Cheers -- Daniel

2 1

Only some encrypted mailboxes
by filbar＠centrum.cz 29 Sep '19

29 Sep '19

Hello I'm looking in plugin for encrypting mailboxes. Is possible to have encrypted only some of mailboxes and other not? Thanks, Filip Bartmann

1 0

dsync having problems with @-sign in mailbox names
by Philip Iezzi 28 Sep '19

28 Sep '19

Hi there We are running Cyrus-to-Dovecot migrations using dsync on destination Dovecot server (Debian Stretch / latest Dovecot 2.3.7.2 from community repo) like this: $ doveadm -o mail_fsync=never backup -R -u <username> imapc: For imapc configuration to connect to remote Cyrus server, see below [1]. While this works great for hundreds of mailaccounts, dsync fails with the following error on accounts with @-sign in mailbox names: dsync(<username>): Error: Failed to access mailbox INBOX/entrance/admin@example: Invalid mailbox name I can confirm, Dovecot supports @-sign in mailbox names and no client (tested with Thunderbird, Apple Mail, Roundcube webmail) has issue with this character. Also Cyrus was always supporting this. So I guess this is an issue with dsync. Can we somehow tune charset (UTF-8 ?) in imapc configuration? Thanks, Philip [1] /etc/dovecot/conf.d/90-migration.conf: ## IMAP imapc_host = imap.example.com imapc_port = 993 imapc_ssl = imaps imapc_ssl_verify = yes imapc_user = %u imapc_master_user = cyrus imapc_password = ********** imapc_features = rfc822.size fetch-headers mail_prefetch_count = 20 imapc_list_prefix = INBOX ## POP3 pop3c_host = pop3.example.com pop3c_port = 995 pop3c_ssl = pop3s pop3c_ssl_verify = yes pop3c_user = %u pop3c_master_user = cyrus pop3c_password = ********** namespace { prefix = POP3-MIGRATION-NS/ location = pop3c: list = no hidden = yes } protocol doveadm { mail_plugins = $mail_plugins pop3_migration } plugin { pop3_migration_mailbox = POP3-MIGRATION-NS/INBOX }

2 5

Mail received but not indexed?
by Marc Roos 28 Sep '19

28 Sep '19

I have recently that some users are complaining about that they are not getting emails. While I see that they are delivered and in the inbox. When I do a doveadm force-resync -u xxxx INBOX it resolves the problem. I think this is something recent. Where/how should I resolve this issue? Recent changes 1. did some os updates 2019-08-27 2. provider took away the ssd for index storage (maybe config issue having less iops storage?) CentOS Linux release 7.6.1810 (Core) dovecot-2.2.36-3.el7.x86_64 mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u:CONTROL=~/mail/control:INDEX=/var/d ovecot2/%u/index:LAYOUT=maildir++ PS during force-resync, I am getting these "index/.INBOX/dovecot.index.log was locked for 176 seconds" on some users

3 4

Debug one user possible?
by Marc Roos 27 Sep '19

27 Sep '19

Is it possible to mail debug just one user? Maybe via the userdb?

3 2

limits in high-security mode with ssl
by sergio 27 Sep '19

27 Sep '19

Hello. I'm using dovecot in high-security mode: service_count = 1 for imap-login service starttls is requires, so the maximum number of active connections is process_limit (which is set to 1024) for the same imap-login service. But with this setup I got: doveconf: Warning: service auth { client_limit=1000 } is lower than required under max. load (1324) doveconf: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1227) 1. Where did 1324 and 1227 come from? 2. How configuration should be updated so these warnings disappear? -- sergio.

1 0

doveadm / vsize
by Paul Macdonald 27 Sep '19

27 Sep '19

Hi, i want to keep track of user mailbox size, I'm using doveadm mailbox status -u <user> vsize INBOX for a given mailbox this is under reporting ( by a lot) is this recursive? what shoud i be using to get an accurate disk usage metric? thanks Paul. -- ------------------------- Paul Macdonald IFDNRG Ltd Web and video hosting ------------------------- t: 0131 5548070 m: 07970339546 e: paul(a)ifdnrg.com w: http://www.ifdnrg.com ------------------------- IFDNRG 40 Maritime Street Edinburgh EH6 6SA ---------------------------------------------------- Virtual Servers from £50.00pm High specification Dedicated Servers from £150.00pm ----------------------------------------------------

3 4

Re: Website Down? Not down.
by dundir＠gmail.com 27 Sep '19

27 Sep '19

Its not down, its most likely your providers DNS resolution. www.dovecot.org resolves to: ipv4 : 94.237.85.39 ipv6: 2a04:3542:1000:910:acc1:5bff:fe5e:3b83 Best Regards, D.

3 2

Website down?
by ＠lbutlr 27 Sep '19

27 Sep '19

I am not able to reach the dovecot site on any one of three connections (home, office, mobile). Trying to look up DNS shows no records. -- But just because you've seen me on your TV Doesn't mean I'm any more enlightened than you

1 0

File manager or browser for IMAP?
by Steve Litt 26 Sep '19

26 Sep '19

Hi all, I could really use a file manager or browser to browse my Dovecot IMAP. Ideally it would have hotkeys to move, copy, delete and send. The send part needn't be coded: Just a call to a shellscript which can handle the send the way it's locally the most convenient. Anyone know of such a file manager or browser for IMAP? SteveT Steve Litt Author: The Key to Everyday Excellence http://www.troubleshooters.com/key Twitter: http://www.twitter.com/stevelitt

11 13

Typo in wiki
by Mika Pflüger 26 Sep '19

26 Sep '19

Hi, on https://wiki2.dovecot.org/Plugins/LastLogin the link to the new documentation page is wrong and leads to a 404. The correct link is https://doc.dovecot.org/plugin-settings/last-login-plugin/ . I tried correcting it myself in the wiki, but the Captcha was too hard for me. Cheers, Mika

2 1

Dovecot UIDs and POP.
by Plutocrat 26 Sep '19

26 Sep '19

Hi, I recently performed a mail server migration for a client under fairly serious time constraints (ahem, yes one of those jobs). I would normally use imapsync to get all the mail copied to the new server, but under the circumstances, I had to write a script to rsync each of the mailboxes over ssh, from one server to another. This all worked fine, except for the fact that if a client was using a POP email client, when they connected to the new server, they re-downloaded all their mail, creating duplicates of everything in their Outlook client. Of course they weren't happy about this. IMAP email clients were OK. No duplicates, and everything was fine. So while I was migrating the mail, I did try for a while to understand the format of the UID files, but failed to do so in the available time, so the client just had to deal with duplicate emails. But now the smoke has cleared, I'd like to understand the problem a little better, and I was hoping someone on this forum could explain it to me, and the changes I'd need to make to the files so that the POP client DIDN'T download the duplicate emails. Here's what I understand. The list of dovecot files in an account looks like this: -rw-r----- 1 admin mail 0 Jul 11 2018 dovecot-acl-list -rw-r----- 1 admin mail 14K Sep 20 08:36 dovecot.index -rw-r----- 1 admin mail 216K Sep 20 17:24 dovecot.index.cache -rw-r----- 1 admin mail 29K Sep 20 17:24 dovecot.index.log -rw-r----- 1 admin mail 388 Dec 17 2017 dovecot.list.index -rw-r----- 1 admin mail 1.6K Jul 11 2018 dovecot.list.index.log -rw-r----- 1 admin mail 24 Jul 11 2018 dovecot.mailbox.log -rw-r----- 1 admin mail 53 Sep 12 09:42 dovecot-quota -rw-r----- 1 admin mail 52K Sep 20 17:24 dovecot-uidlist -rw-r----- 1 admin mail 8 Jul 11 2018 dovecot-uidvalidity -rw-r----- 1 admin mail 0 Jul 4 2016 dovecot-uidvalidity.5779bbeb It seems that the dovecot-uidlist is an index of all the mail files in the account. As far as I can gather, this should be the same on both servers after I've rsynced them over ssh: The files and the list of them in dovecot-uidlist should correspond. So what is it that the POP client looks at and decides to re-download all the emails? And how could I have stopped it from doing that, and get it to realize that the list of emails it holds internally is the same as the list on the server? What would I need to change in the dovecot files? Thanks for any insight into the process. As a secondary question -- and perhaps I should put this in a separate message -- I did notice that "doveadm sync" would apparently have helped me with this, but I wasn't able to get that to work either. I believe it was something to do with the fact that all the mailboxes were under the same linux user account on the target server, and I couldn't figure out all the paths and permissions in time. Would 'doveadm sync' have fixed all the UID and duplicate POP email issues? P.

6 11

NFS Locking and Submission Service Authentication
by Asai 26 Sep '19

26 Sep '19

Greetings, We're in the process of upgrading our Dovecot server to new hardware and new expanded storage. We planned on using an NFS share for the mail storage, as we're running Postfix / Dovecot on a VM and wanted to separate out the mail storage from the VM for backup reasons. I read as much as I could find on line regarding configuring Dovecot to use NFS, and set it up as best I could, but I'm still running into lock errors e.g.: Sep 25 10:30:35 triata4 dovecot: imap(user(a)triata.globalchange.media)<75580><enQ/AWSTkQkKCgDu>: Error: fcntl(/vmail/triata.globalchange.media/user/dovecot.index.log, write-lock, F_SETLKW) locking failed: No locks available Sep 25 10:30:35 triata4 dovecot: imap(user(a)triata.globalchange.media)<75580><enQ/AWSTkQkKCgDu>: Error: mail_index_wait_lock_fd() failed with file /vmail/triata.globalchange.media/user/dovecot.index.log: No locks available Also, I have been trying to configure the Dovecot submission service to authenticate with Postfix, but I keep running into errors which are related to how I'm configuring the authentication. How do we set the user@domain and password string for submission in the configs? Thank you. Please see doveconf -n below, if you see any other errors in this config, I'd be grateful if you pointed them out: # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 3.10.0-957.27.2.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) nfs auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log deliver_log_format = msgid=%m: from=%f: %$ hostname = triata.globalchange.media mail_debug = yes mail_fsync = always mail_home = /vmail/%d/%n/home mail_location = maildir:/vmail/%d/%n managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = separator = / type = private } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } plugin { mail_log_fields = uid box msgid from flags sieve = file:/vmail/%d/%n/sieve;active=/vmail/%d/%n/.dovecot.sieve } protocols = imap lmtp submission sieve service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { group = vmail mode = 0666 user = vmail } } service imap-login { inet_listener imap { port = 143 } inet_listener imaps { port = 993 ssl = yes } } service lmtp { unix_listener lmtp { mode = 0666 } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service managesieve { process_limit = 1024 } service submission-login { inet_listener submission { port = 587 } } ssl_cert = </etc/letsencrypt/live/triata.globalchange.media/fullchain.pem ssl_key = # hidden, use -P to show it submission_relay_host = triata.globalchange.media submission_relay_password = # hidden, use -P to show it submission_relay_port = 587 submission_relay_ssl = starttls submission_relay_trusted = yes submission_relay_user = %u userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } protocol lda { mail_plugins = }

3 4

Spam Blocking by filtering on username / id
by Plutocrat 26 Sep '19

26 Sep '19

This is probably quite an easy question, but I haven't been able to find the answer. I'm running a server where all the email addresses are in the format "user(a)domain.com". I've noticed that a large number of fake login attempts use the format "user" eg. reception, service, root, admin. Is it possible to prevent any such logins to these email users without an @domain.com? Or maybe ignore them. Or drop them from the logging. P.

5 5

'director_tag' field returned from passdb lookup results in 'unknown passdb extra field'
by Dan 25 Sep '19

25 Sep '19

Hello all, I'm working with director in tandem with 'director_tags' to group some backend hosts. I've assigned the groups to the hosts by appending a '@' character after the IP address of a backend host under director_mail_servers: ... director_mail_servers = 192.168.0.1@foo 192.168.0.2@bar 192.168.0.3@foobar ... I can confirm that the backend hosts possess the correct tags by issuing: # doveadm director status mail server ip tag vhosts state state changed users 192.168.0.1 foo 100 up - 0 192.168.0.2 bar 100 up - 0 192.168.0.3 foobar 100 up - 0 And examining that the tags have been assigned correctly. My passdb lookup is using mysql, and it appears as such: passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } This file looks like: driver = mysql connect = host=localhost dbname=xxx user=xxx password=xxx password_query = select director_tag, username, domain, password, 'Y' as `proxy` from users where username = '%n' and domain = '%d' iterate_query = select director_tag, username, domain from users I have a database that contains the following columns: username, domain, password, home, UID, GID, active, and director_tag To assign users to a backend, I went off of the documentation that states: > " A passdb lookup can return "director_tag" field containing the wanted tag name. " To fulfill this, I return the 'director_tag' in the passdb lookup, through password_query. The mapping seems to work. When I change the row in the database, the user gets proxied to the new backend on the next connection. However, My question is, Why does this appear in the logs? "dovecot[1963]: imap-login: Debug: Ignoring unknown passdb extra field: director_tag" How could this be an unknown passdb extra field, when the documentation states that you may return a field containing this key? In the file core/src/login-common/client-common-auth.c - Starting at line 142, there is no if condition checking for 'director_tag'. This causes that line to be output to debug handle. Is this intentional? Thank you for your time. Full configuration: auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login auth_verbose = yes auth_verbose_passwords = yes director_mail_servers = 192.168.0.1@foo 192.168.0.2@bar 192.168.0.3@foobar director_servers = x.x.x.x y.y.y.y director_user_expire = 5 mins disable_plaintext_auth = no doveadm_port = 24245 haproxy_trusted_networks = x.x.x.x y.y.y.y 127.0.0.1 login_greeting = Dovecot At Your Service managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocols = imap pop3 service director { fifo_listener login/proxy-notify { mode = 0666 user = $default_login_user } inet_listener { port = 9090 } unix_listener director-userdb { mode = 0600 } unix_listener login/director { mode = 0666 } } service imap-login { executable = imap-login director inet_listener imap { haproxy = yes port = 143 } inet_listener imaps { haproxy = yes port = 993 ssl = yes } } service ipc { unix_listener ipc { user = dovecot } } service pop3-login { executable = pop3-login director inet_listener pop3 { haproxy = yes port = 110 } inet_listener pop3s { haproxy = yes port = 995 ssl = yes } } ssl_cert = </etc/dovecot/private/dovecot.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol doveadm { auth_socket_path = director-userdb }

2 1

Can't Get SASL to Work
by Christopher Wooley 25 Sep '19

25 Sep '19

I have been fighting with this for almost 2 days. I can't seem to get the SMTP server to authenticate through SASL. I have turned so many things off and on, I don't remember what I've done, anymore. Can someone look at these and tell me what I'm missing. I get this in the log, anytime postfix tries to authenticate. Sep 24 19:48:14 ubuntu postfix/smtpd[14464]: warning: SASL: Connect to smtpd failed: No such file or directory Sep 24 19:48:14 ubuntu postfix/smtpd[14464]: fatal: no SASL authentication mechanisms Sep 24 19:48:15 ubuntu postfix/master[14048]: warning: process /usr/lib/postfix/sbin/smtpd pid 14464 exit status 1 srw-rw-rw- 1 postfix postfix 0 Sep 24 19:10 auth 10-auth.conf disable_plaintext_auth = no auth_ssl_require_client_cert = no auth_mechanisms = plain !include auth-system.conf.ext -------------- 10-master.conf service imap-login { inet_listener imap { } inet_listener imaps { } } service pop3-login { inet_listener pop3 { } inet_listener pop3s { } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { mode = 0666 user = postfix group = postfix } } service imap { } service pop3 { } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 user = postfix group = postfix } unix_listener auth-userdb { mode = 0666 user = postfix group = postfix } } service auth-worker { } service dict { unix_listener dict { } } -------------- main.cf smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no append_dot_mydomain = no readme_directory = no compatibility_level = 2 smtpd_tls_cert_file = /etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination myhostname = ubuntu.local.acr-live.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases mydestination = $myhostname, ubuntu, localhost.localdomain, xyz.com , localhost mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all inet_protocols = all smtpd_sasl_type = dovecot smtpd_sasl_auth_enable = yes smtp_sasl_auth_enable = yes broken_sasl_auth_clients = yes smtpd_tls_security_level = may ---------------------------------- master.cf smtp inet n - y - - smtpd submission inet n - y - - smtpd -o syslog_name=postfix/submission -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o smtpd_tls_auth_only=yes -o smtpd_reject_unlisted_recipient=no -o smtpd_sasl_type=dovecot -o smtpd_sasl_path=private/auth -o smtpd_recipient_restrictions= -o smtpd_relay_restrictions=permit_sasl_authenticated,reject -o milter_macro_daemon_name=ORIGINATING pickup unix n - y 60 1 pickup cleanup unix n - y - 0 cleanup qmgr unix n - n 300 1 qmgr tlsmgr unix - - y 1000? 1 tlsmgr rewrite unix - - y - - trivial-rewrite bounce unix - - y - 0 bounce defer unix - - y - 0 bounce trace unix - - y - 0 bounce verify unix - - y - 1 verify flush unix n - y 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - y - - smtp relay unix - - y - - smtp -o syslog_name=postfix/$service_name showq unix n - y - - showq error unix - - y - - error retry unix - - y - - error discard unix - - y - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - y - - lmtp anvil unix - - y - 1 anvil scache unix - - y - 1 scache maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient} uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) bsmtp unix - n n - - pipe flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient scalemail-backend unix - n n - 2 pipe flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension} mailman unix - n n - - pipe flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py ${nexthop} ${user}

2 2

Mail messages are occasionally getting "stuck" behind one message on the server with POP3
by David Salisbury 24 Sep '19

24 Sep '19

I'm currently using Dovecot 2.2.33.2, although I've had this particular issue happen periodically over the last few years with other Dovecot versions. It seems to only affect accounts I'm receiving with POP3, not IMAP ones. What happens is the "top-most" (or, oldest) message in the "cur" folder seems to get "stuck". So I'll, say, come back in after a break to check my email (Thunderbird in my case, latest version), and in one of my folders I'll have 30 copies of the same email (all with the same timestamp), and no newer messages delivered since the timestamp of that message. If I go look in the "cur" folder, it has lots of messages in it. The "new" folder is empty. Every time I click "Get Messages" in the mail client, I get another new copy of the same email and no other mail. If I go manually into the cur folder and move the top-most (again, meaning "oldest") message out (which of course corresponds to the message that I'm receiving copies of over-and-over repeatedly) then when I click "Get Messages" all of the other messages come pouring into my mail client just fine and everything becomes "un-stuck". I've done some experiments, and if I copy that same "bad" message back in to cur with its original filename, it gets stuck again. It is an encrypted message, so I tried decrypting it and putting it back in cur with the original name, and it gets stuck in the same fashion even when it is decrypted. I tried putting the bad message into an account that receives with IMAP, just to see if it would maybe keep messages from delivering or something, but new messages come into the IMAP account just fine, even with the bad message present, so the issue seems specific to POP3. Any ideas what might cause something like that? I've had it happen twice over the last two days (which is unusually frequent, hence my message here), and the message sources are varied. Today it was a normal email message from a person, and yesterday it was a Twitch notification. I don't see anything unusual in the logs (and I did turn on debugging to see if it gave some additional info), just normal POP3 logins and connections closings when I'm clicking "Get Messages". -David

1 0

Any need to be worried about occasional dsync errors ?
by Laura Smith 24 Sep '19

24 Sep '19

I am occasionally (maybe every 4 hours or less frequently) seeing the following two errors appear in my logs. Are they any cause for concern ? Error: Timeout during state=sync_mails (send=done recv=mails) I/O has stalled, no activity for 600 seconds (last sent=mail_request (EOL)

1 0

Quota plug-in, do the directors also need it enabled?
by Kristijan Savic - ratiokontakt GmbH 23 Sep '19

23 Sep '19

I am having an issue with the quota display not showing up in e.g. Roundcube. There are multiple Dovecot servers and three directors. A load balancer also does it's thing. The quota plug-in is enabled everywhere, except on the directors. Do those also need it enabled? -- Kristijan Savic

1 0

pigeonhole sieve "standalone"
by Greg Minshall 22 Sep '19

22 Sep '19

hi. i've been thinking (but, for years now!) of a replacement for procmail, and pigeonhold sieve seems like a good candidate. but, i run nmh, not dovecot. as i started install it (on arch linux), i started to worry that it may be foolish of me to try to run it outside of a dovecot system. any wisdom about that would be gratefully received. thanks in advance, and thanks for the software. Greg Minshall

1 0

mdbox + sis attachments. Error stream is larger than expected by 1 byte
by Oleg Krivonosov 20 Sep '19

20 Sep '19

Hello! I use Dovecot 2.3.4.1-5+deb10u1 (Debian 10 x64) with mdbox, sis and imap. I catch many errors with attachments "Stream is larger than expected" by 1 byte in emails from Xerox WorkCentre 3345. Examples: Sep 20 23:20:04 mailserver dovecot: imap(wasya)<606><AG1zywGTVodVrE84>: Error: Mailbox INBOX: UID=5002: read(attachments-connector(/var/mail/virtual/wasya/mdbox/storage/m.210)) failed: read(/var/mail/attachments/b3/56/b3563977baf186928d38f81480b6443cf6d6d7e4-b86d80062ab36f5d7f190000f7ccf497[base64:18 b/l]) failed: Stream is larger than expected (882801 > 882800, eof=0) (FETCH BODY[]) Sep 20 23:32:27 mailserver dovecot: imap(wasya)<4831><n0a39wGTZ8hVyu8l>: Error: Mailbox INBOX: UID=654996: read(attachments-connector(/var/mail/virtual/wasya/mdbox/storage/m.4372)) failed: read(/var/mail/virtual/wasya/mdbox/storage/m.4372 trailer) failed: Stream is larger than expected (38 > 37, eof=0) (FETCH BODY[]). This error breaks getting email in MS Outlook and breaks viewing attachment in the problem email. Please help me to debug and to fix this issue. -- Best regards Oleg

1 0

Re: Bug] Sieve vacation :addresses match only,>, case-sensitive?
by Klaus Steinberger 20 Sep '19

20 Sep '19

Hi, >> I never saw any mail system in which the local Part ist Case sensitive! > > Every Unix/Linux system (I?d say that represents the majority of mail systems) has a case sensitive local part. Most mail admins have set their systems up to normalize all users on lowercase names, but that is not and has not always been the case. at least in every large installation LDAP User Backend's (or AD or similar) are used, and they are definitly case insensitive for the CN or UID attributes. Really nobody who cares about his systems and users uses mailboxnames which just differ in case (too much danger of confusion!) At least sieve must reflect the same settings as the MDA, so if the MDA is set to downcase (which in my opionion is the only valuable setting) sieve must also downcase. Sincerly, Klaus

1 0

fts_solr: Error: fts_solr: received invalid uid '0'
by Fabian 20 Sep '19

20 Sep '19

Hi, we are trying to add full text search functionality with Solr to our Doveoct setup. Our Versions: OS: Debian 9 Tried versions: - Dovecot 2.2.7 with Solr 3.6 - Dovecot 2.3.4 with Solr 8.2 (2.2.7 from offical Debian repository, 2.3.4 from backports) Search is working mostly of the time perfrectly smooth. But sometimes following message appears in mail.err: dovecot: imap(username)<16189><UxYWLVuSYMasEQoK>: Error: fts_solr: received invalid uid '0' If this error occurs our webmail frontend delivers most of the time a timeout. Sometimes the search only takes really long. Are there any ideas why this error occurs? We are not able to reproduce the error in such a way that it would always be reproducible. However, we can reproduce the behavior in some form over and over again - but we do not know exactly what is decisive. If you need any further information please ask - thanks! :-) dovecont -n: 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.9.0-11-amd64 x86_64 Debian 9.11 ext4 # Hostname: localhost auth_master_user_separator = * auth_username_format = %Ln default_client_limit = 5000 default_process_limit = 1000 default_vsz_limit = 256M dict { sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } disable_plaintext_auth = no first_valid_uid = 480 imap_capability = +XDOVECOT lmtp_save_to_detail_mailbox = yes mail_attribute_dict = file:/var/spool/dovecot/user/%n/Maildir/dovecot-attributes mail_gid = vmail mail_location = maildir:/var/spool/dovecot/user/%d/%n/Maildir:LAYOUT=fs mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual" mail_privileged_group = vmail mail_uid = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace { hidden = yes inbox = yes list = no location = prefix = separator = / subscriptions = yes } namespace { list = yes location = maildir:%%h/Maildir:INDEXPVT=~/shared/%%u:LAYOUT=fs prefix = shared/%%n/ separator = / subscriptions = no type = shared } namespace Public { list = children location = maildir:/var/spool/dovecot/public:INDEXPVT=~/public:LAYOUT=fs prefix = Public/ separator = / subscriptions = no type = public } namespace Virtual { hidden = no list = yes location = virtual:/etc/dovecot/virtual:INDEX=/var/spool/dovecot/user/%u/virtual prefix = Virtual/ separator = / subscriptions = no } namespace inbox { inbox = no location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX/ separator = / subscriptions = no type = private } passdb { args = /etc/dovecot/masteruser.%s driver = passwd-file master = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { acl = vfile acl_anyone = allow acl_shared_dict = file:/var/spool/dovecot/public/shared-mailboxes.db fts = solr fts_autoindex = yes fts_solr = url=<a href="http://172.17.10.12:8983/solr/dovecot/" rel="noreferrer noopener" target="_blank">172.17.10.12:8983/solr/dovecot/</a> quota = dict:User quota::no-unset:proxy::sqlquota quota_rule = *:storage=10G sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = /var/spool/dovecot/globalsieve/duplicate.sieve sieve_duplicate_default_period = 1h sieve_duplicate_max_period = 1d } protocols = " imap lmtp sieve pop3" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service decode2text { executable = script /usr/lib/dovecot/<a href="http://decode2text.sh" rel="noreferrer noopener" target="_blank">decode2text.sh</a> unix_listener decode2text { mode = 0666 } user = dovecot } service dict { unix_listener dict { group = vmail user = vmail } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = no userdb { args = /etc/dovecot/mysql-userdb.conf.ext driver = sql } protocol lmtp { mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual acl quota sieve notify" quota_full_tempfail = yes } protocol imap { imap_capability = +XDOVECOT mail_max_userip_connections = 100 mail_plugins = " listescape mail_log notify quota acl fts fts_solr virtual imap_acl imap_quota" } remote <a href="http://172.17.10.10" rel="noreferrer noopener" target="_blank">172.17.10.10</a> { protocol imap { imap_metadata = yes } }

2 3

Second private namespace
by André Rodier 19 Sep '19

19 Sep '19

Hello, I have Dovecot working, with a private namespace only. I would like to know if the following is feasible. - Add a second private namespace, in another directory scheme, for instance /mnt/backup/homebox/<user>/Mails/... - This namespace would be read-only. Perhaps the index and flags should be stored in a different folder with r/w access (e.g. /var, or even /tmp, it's not important) Now, as a matter of fact, this folder would be mounted on demand, via systemd-automount and fuse and is likely to be remote. This might implies some flags or caching on Dovecot performance. Thanks for your insights, André

1 0

Recent Dovecot on old operating system
by geho781＠justmail.de 19 Sep '19

19 Sep '19

Hi, sorry for the dumb question and please ignore this post if you think it's far beyond; i know it's not the way to go, but for reasons ... Has anyone running a self compiled recent dovecot (2.2.36.4) on Debian-7 and does it work? Or thinks it should work. Surprisingly it actually compiles flawlessly on Debian-7, but i wonder wether it will become a complete mess replacingthe existing dovecot (2.1.7) with the new one, serving a few dozens users and any kind of mail clients. Libraries of the compiled Dovecot: $ ldd ./src/master/.libs/dovecot linux-vdso.so.1 => (0x00007ffeacfb1000) libdovecot.so.0 => /usr/local/00-DBAI/dovecot/lib/dovecot/libdovecot.so.0 (0x00007f557b2a9000) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f557af1c000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f557ad18000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f557ab10000) /lib64/ld-linux-x86-64.so.2 (0x00007f557b5dc000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f557a8f4000) libc6 versions: Debian-7: 2.13-38 Debian-9: 2.24-11 thanks so far, gerald

2 1

Dovecot 2.3.7.2 lucene segfault and coredump
by Domenico Pastore 19 Sep '19

19 Sep '19

Hi, i have a problem with libclucene-core.so.2.3.3.4. I See segfault error to messages log, when dovecot store mail to INBOX. set 12 13:41:21 box02.par-tec.it kernel: doveadm-server[20285]: segfault at 38 ip 00007f575b68fc42 sp 00007ffc0272e750 error 4 in libclucene-core.so.2.3.3.4[7f575b569000+188000] set 12 13:41:22 box02.par-tec.it kernel: doveadm-server[18871]: segfault at 38 ip 00007f9bea6d2c42 sp 00007fff47bceae0 error 4 in libclucene-core.so.2.3.3.4[7f9bea5ac000+188000] In the dovecot logs: 2019-09-12 13:45:09 auth: Debug: ldap(test4444client(a)newsvilXXXX,10.0.8.128<mailto:test4444client@newsvilXXXX,10.0.8.128>): Finished userdb lookup 2019-09-12 13:45:09 auth: Debug: userdb out: USER 1 test4444client@newsvilXXXX home=/pec_store/pec_mailbox/pec_mailbox_devel01/4/5/6/7/1/45671_18231 quota_rule=*:bytes=1048576000 mail_plugins+= 2019-09-12 13:45:10 SKENO8Uvel0gbAAA5ZKy4w doveadm(test4444client@newsvilXXXX): Fatal: master: service(doveadm): child 27680 killed with signal 11 (core dumped) 2019-09-12 13:45:10 auth: Debug: master in: USER 1 test4444client@newsvilXXXX service=doveadm lip=192.160.10.3 lport=924 rip=10.0.8.128 rport=36760 2019-09-12 13:45:10 auth: Debug: ldap(test4444client@newsvilXXXX 10.0.8.128): Performing userdb lookup I have attach the coredump of error and dovecot.conf Thanks for support. Br, Domenico ------------------- info: ------------------- # 2.3.7.2 (3c910f64b): /pec/config/dovecot/dovecot-devel01/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 3.10.0-957.27.2.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) # Hostname: box02

2 5

fts-elastic plugin
by Filip Hanes 19 Sep '19

19 Sep '19

Hi all, I have recently worked on fts plugin for ElasticSearch. https://github.com/filiphanes/fts-elastic It is forked from fts-elasticsearch as you can see in PR https://github.com/atkinsj/fts-elasticsearch/pull/21 with following changes (maybe some more) - no duplicate json keys in indexed documents, so compatible with ES 7.x - 1 elastic index for all users with routing by username - _id field similar to fts-solr (uid/box_guid/user) - better json response parsing - no need to use _source - added rawlog_dir to config and some more - renamed all elasticsearch to elastic for shorter names - fixed http_client leaks - fixed some compile warnings I would appreciate if someone with better experience in c and dovecot code would review my code and suggest/push changes. In my opinion fts-elastic is now functionally on level as currently recommended FTS plugin: fts-solr. I would like to implement proper rescan inspired by fts-lucene so it would become the most complete fts plugin for dovecot. -- Filip Hanes

3 2

Imaptest stall
by Marc Roos 18 Sep '19

18 Sep '19

I have been testing with imaptest and getting 'stalls', I tried even building from source and static. Even running it on the same host. Anyone knows what I could doing wrong? [@~]# ./imaptest - append=100,0 logout=0 host=192.168.10.44 port=143 user=test2 pass=xxxxxxxx seed=100 secs=240 clients=1 mbox=64kb.mbox box=INBOX/test Logi Sele Appe 100% 100% 100% 1 1 5 1/ 1 0 0 9 1/ 1 0 0 13 1/ 1 0 0 5 1/ 1

3 7

Namespace overlap
by Daniel Miller 17 Sep '19

17 Sep '19

Given an existing default namespace: namespace inbox { type = private separator = / prefix = location = sdbox:/var/mail/%d/%n/sdbox inbox = yes hidden = no list = yes subscriptions = yes } And mailboxes like: INBOX INBOX/Archives INBOX/Archives/2018 if I then define a new namespace: namespace archives { type = private separator = / prefix = Archives/ location = mdbox:/var/mail/%d/%n/Archives/mdbox subscriptions = no list = children } What will happen to the previous existing mailboxes & mails? Will they simply be "masked" by the new namespace and remain pending other operations? Or would they be moved/deleted? If they remain - is it possible to refer to the old mailboxes via either IMAP or doveadm? -- Daniel

1 0

CVE-2019-11500 and LMTP error
by Gabriele Nencioni 16 Sep '19

16 Sep '19

Hi all, does the dovecot fixed version: 2.3.7.2, 2.2.36.4 (as the CVE-2019-11500 says) fix the LMTP error "Got unexpected reply" as well? The LMTP error "Got unexpected reply" is described here: https://dovecot.org/pipermail/dovecot/2018-August/112562.html https://dovecot.org/pipermail/dovecot/2018-August/112666.html Thanks in advance Regards, -- Gabriele Nencioni

2 1

Repo for Debian-Buster
by slater.ch 16 Sep '19

16 Sep '19

Hi, is there already a release date for Debian Buster packages? kind regards Christian

3 2

corrupted mdbox
by sch tel 16 Sep '19

16 Sep '19

Hello list, i run into another problem. It seems there are some null bytes in the middle of an compressed mdbox, if i look into it with hexdump after run doveadm dump. With mdbox-recover.pl i could recover ~2k messages. What should i do to recover this broken mdbox file and dsync can finish? Sep 06 18:47:28 doveadm: Error: zlib.read(/var/spool/mail/<user>/storage/m.770): unexpected EOF at 7947710 Sep 06 18:47:28 doveadm: Error: dsync(server1): read(zlib(/var/spool/mail/<user>/storage/m.770)) failed: read(/var/spool/mail/<user>/storage/m.770) failed: zlib.read(/var/spool/mail/<user>/storage/m.770): unexpected EOF at 7947710 (last sent=mail, last recv=mail_request (EOL)) Sep 06 18:47:29 dsync-local(<user>)<+mJrOaCNcl2eZwAA0H466A>: Error: zlib.read(/var/spool/mail/<user>/storage/m.770): unexpected EOF at 7947710 Sep 06 18:47:29 dsync-local(<user>)<+mJrOaCNcl2eZwAA0H466A>: Error: dsync(server1): read(zlib(/var/spool/mail/<user>/storage/m.770)) failed: read(/var/spool/mail/<user>/storage/m.770) failed: zlib.read(/var/spool/mail/<user>/storage/m.770): unexpected EOF at 7947710 (last sent=mail, last recv=mail_request (EOL))

2 1

question about Mailcrypt plugin
by Daniel Niewerth 14 Sep '19

14 Sep '19

Hi everybody, I have a question about the Dovecot Mailcrypt Plugin. I'm trying to understand what the security of this plugin is based on. The encryption with private and public key and elliptic curves is basically a good thing. But the keys are in the file system together with the encrypted mails. The passwords for the private keys are in the user database. I guess the passwords have to be in plaintext for it to work. Is that true, or did I misunderstand something? Then the encryption would make no sense at all, right? For what purpose was the plugin developed? Can anyone explain this to me? Best regards Daniel

2 2

New to dovecot admin, question about using LDAP for user-specific values
by Gerben Wierda 13 Sep '19

13 Sep '19

I am new to dovecot administration. I’ve read the Wiki but that hasn’t given me the understanding I need. When I query my LDAP (on macOS) on a value for user ‘gerben’, I can get that: dumbledore:~ gerben$ dscl /LDAPv3/127.0.0.1 -read /users/gerben GeneratedUID GeneratedUID: 780D870E-6B00-478E-AB70-3D3307215A82 I would like to use that value in dovecot settings, e.g. something like user_attrs = \ =mail=maildir://Library/Server/Mail/Data/mail/%{ldap:GeneratedUID} Is this possible and if so what do I exactly need to do to get this working? Gerben Wierda Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/> Architecture for Real Enterprises <https://www.infoworld.com/blog/architecture-for-real-enterprises/> at InfoWorld On Slippery Ice <https://eapj.org/on-slippery-ice/> at EAPJ

2 4

Multiple certificate option
by remo＠Mattei.org 13 Sep '19

13 Sep '19

What is the best way to adopt multiple certs? Thanks.

8 9

keywords lost when moving a message in a folder
by wouldsmina 13 Sep '19

13 Sep '19

Hi, I migrate my dovecot server from Debian 9 to Debian 10 (Dovecot 2.3.4.1), since when I move a message in a folder, keywords systematically disappear. I'm using Thunderbird 60.8. Would an option have escaped me? or is there a bug on this version of dovecot? Dovecot 2.3.4.1 OS : Debian 10.0 x64 FS : Ext4 dovecot -n result : # 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.4 () # OS: Linux 4.19.0-5-amd64 x86_64 Debian 10.0 # Hostname: suzuki.domain.tld auth_cache_size = 1 k auth_failure_delay = 3 secs base_dir = /var/run/dovecot/ default_vsz_limit = 4 G first_valid_uid = 100 lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes login_greeting = mail system ready. login_trusted_networks = 172.16.0.0/12 192.168.0.0/16 mail_fsync = always mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_prefetch_count = 20 mail_privileged_group = mail mailbox_idle_check_interval = 1 mins mmap_disable = yes namespace inbox { inbox = yes location = maildir:~/Maildir mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = INBOX. separator = . subscriptions = yes type = private } passdb { driver = pam } plugin { acl_shared_dict = file:/var/lib/dovecot/shared-mailboxes sieve = ~/sieve/.dovecot.sieve sieve_after = /etc/dovecot/sieve.after sieve_before = /etc/dovecot/sieve.before sieve_before2 = ~/sieve/.dovecot.vacation.sieve sieve_dir = ~/sieve sieve_editheader_forbid_add = X-Verified sieve_editheader_forbid_delete = X-Verified X-Seen sieve_editheader_max_header_size = 1k sieve_extensions = +editheader sieve_max_script_size = 2M } postmaster_address = postmaster(a)domain.tld protocols = " imap lmtp pop3" service auth-worker { process_min_avail = 6 service_count = 0 } service imap-login { process_min_avail = 10 service_count = 0 vsz_limit = 4 G } service imap { process_limit = 4096 vsz_limit = 4 G } service pop3 { process_limit = 1024 } ssl_cert = </etc/ssl/certs/suzuki.crt ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { driver = passwd } verbose_proctitle = yes protocol imap { mail_max_userip_connections = 25 } thanks.

2 2

Outlook 2019 and IMAP
by John Regan 12 Sep '19

12 Sep '19

Hi, We've just upgraded a few of our desktops to use Outlook 2019, and the configuration is different from previous versions. There doesn't appear to be any ability to specify a username in addition to the user's email address. The username is different than the username specified in the email address. I had read about setting auth_username_format, but the user login name is "user" while the email address is user.name(a)company.com. I've included below my dovecot -n config. # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 5.1.16-300.fc30.x86_64 x86_64 Fedora release 30 (Thirty) # Hostname: orion.inside.example.com mail_gid = mail mail_home = mail/ mail_location = mbox:~/mail:INBOX=/var/spool/mail/%u mail_max_userip_connections = 500 mail_plugins = " listescape" mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational rege x imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mbox_write_locks = fcntl namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { driver = pam } passdb { driver = pam } protocols = imap pop3 service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 } process_min_avail = 6 service_count = 0 vsz_limit = 512 M } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { address = 192.168.1.100 port = 995 } } ssl_cert = </etc/letsencrypt/fullchain.pem ssl_cipher_list = ALL:!LOW:!EXP:!aNULL:!RC4::!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_prefer_server_ciphers = yes userdb { driver = passwd } userdb { driver = passwd }

2 1

Re: Gnu sieve vs Dovecot sieve-filter - sieve-filter extremely slow at lda (writing emails to local mbox files)
by Zenaan Harkness 12 Sep '19

12 Sep '19

I am wondering why sieve-filter is so slow compared to gnu sieve. I run mpop (like getmail) to download from a pop3 server to a local mbox file: ~/mail/email-incoming-unsorted This step is very fast. The next step, I throw the email-incoming-unsorted mbox file at a sieve processor, to sort the emails from that mbox, into other mboxes, according to the sieve rules file. Up until a couple days ago I was using Gnu sieve. Gnu sieve balks on emails which have no x-message-id (?? something like this) header field, so after a few years, I finally decided to switch "up" to Dovecot/Pigeonhole's "sieve-filter" command. Using Gnu sieve, this mbox sorting step was even faster than mpop (/ getmail) - and mpop and getmail are really fast (compared with fetchmail), since they pipeline the email downloads. Even with 100s of emails, Gnu sieve would take only 10 to 20 seconds at most. Super fast. Using sieve-filter, all emails are being processed - including those without "message id header". This is good. But also, using sieve filter, is really slower - slower than the download step by an order of magnitude or two. See below for details, any ideas appreciated. To add to the below, I added: mbox_very_dirty_syncs = yes to the sieve-filter config, which slightly improves performance, but not by much (in comparison with Gnu sieve). TIA, ----- Forwarded message from Zenaan Harkness <zenaan(a)freedbms.net> ----- From: Zenaan Harkness <zenaan(a)freedbms.net> To: debian-user(a)lists.debian.org Date: Thu, 12 Sep 2019 08:06:12 +1000 Subject: Re: Gnu sieve vs Dovecot sieve-filter - sieve-filter extremely slow at lda (writing emails to local mbox files) On Thu, Sep 12, 2019 at 07:55:23AM +1000, Zenaan Harkness wrote: > Why is Gnu sieve so extremely fast to batch process an mbox file, but > while Dovecot's sieve-filter is an order of magnitude slower? > > Sequence: > > - mpop or getmail to pipeline download emails into temp mbox file > - filter that file > > Gnu sieve just flies through a local mbox file and saving emails to > other local mbox files. > > Gnu sieve rejects too many emails with "malformed" errors, so after a > few years I bit the bullet and upgraded to Dovecot's sieve-filter. > > Dovecot's sieve-filter, at present, is an order of magnitude slower. > > Here's my filter command (one line): > > /usr/bin/sieve-filter -veW -c $HOME/etc/email/sieve-dovecot-config.conf -o mail_location=mbox:~/mail:INBOX=~/mail/Inbox:INDEX=:UTF-8:VOLATILEDIR=/tmp/dovecot-volatile/%2.256Nu/%u:SUBSCRIPTIONS=dovecot_subscriptions ~/etc/email/sieve.rc email-incoming-unsorted > > The sieve script is fine now that I have the correct "require" > clauses (hint: "capability strings"). > > File ~/etc/email/sieve-dovecot-config.conf: > > protocols = pop > lda_mailbox_autocreate = yes > lda_mailbox_autosubscribe = yes > mail_fsync = never > > There's no re-sending of emails into my local Postfix SMTP server - I > checked the system logs and confirmed this (journalctl -f). > > I suspect that Gnu sieve was directly writing each email to the > appropriate sieve-determined mbox file (perhaps with only a sync at > the end of a single batch process - what I've attempted to achieve > above with sieve-filter), and that sieve-filter is instead passing > each email through some (dovecot) lda? > > Here's the output for a sieve-filter batch processing of 11 emails: > > $ /usr/bin/sieve-filter -veW -c /home/zen/etc/email/sieve-dovecot-config.conf -o mail_location=mbox:/home/zen/mail:INBOX=/home/zen/mail/Inbox:INDEX=:UTF-8:VOLATILEDIR=/tmp/dovecot-volatile/%2.256Nu/%u:SUBSCRIPTIONS=dovecot_subscriptions /home/zen/etc/email/sieve.rc email-incoming-unsorted > # PS0 Timestamp: 20190912@07:02:23 > info: filtering: [Tue, 3 Sep 2019 05:17:16 -0500; 10240 bytes] `Re: VentureBeat: The death of disk? H...'. > info: msgid=<CAMjeLr91T9R7APsuxQVuM3WbqDsxAfwn4=OYDeDX4FMcoRdGdQ(a)mail.gmail.com>: stored mail into mailbox 'l/cp/cp'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 07:29:53 -0400; 12968 bytes] `[zfs-devel] xattr naming format in Zo...'. > info: msgid=<15675101930.d5ba2E.12322(a)composer.zfsonlinux.topicbox.com>: stored mail into mailbox 'l/z/zdev'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 03 Sep 2019 15:29:09 +0300; 20461 bytes] `Re: [zfs-devel] xattr naming format i...'. > info: msgid=<23955051567513749(a)sas1-02732547ccc0.qloud-c.yandex.net>: stored mail into mailbox 'l/z/zdev'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 18:20:42 +0530; 18065 bytes] `Re: [Gluster-users] Issues with Geo-r...'. > info: msgid=<CADmkyZMxrfOANrAP+_URAHJcMqCqh=iGdajTSzkfQ5PCZsUfyg(a)mail.gmail.com>: stored mail into mailbox 'l/gl/user'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 09:34:20 -0400; 13342 bytes] `Re: tasksel'. > info: msgid=<20190903133420.GS6166(a)eeg.ccf.org>: stored mail into mailbox 'l/deb/user'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 06:56:07 -0700 (PDT); 12390 bytes] `[awx-project] Re: AWX on Kubernetes m...'. > info: msgid=<0715adb7-540f-4cff-9282-e1252c53c2e8(a)googlegroups.com>: stored mail into mailbox 'l/ansible/awx'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 07:01:27 -0700 (PDT); 12220 bytes] `[awx-project] Re: AWX on Kubernetes m...'. > info: msgid=<949b2c17-4254-49f1-83b4-cd54d15aa17d(a)googlegroups.com>: stored mail into mailbox 'l/ansible/awx'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 10:14:58 -0400; 25313 bytes] `Re: [zfs-devel] xattr naming format i...'. > info: msgid=<CAB5c7xpHCdFx1w3yA9FyRL-KQ8BUiCr4JbiDQRuFJj9nOgKxTg(a)mail.gmail.com>: stored mail into mailbox 'l/z/zdev'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 17:10:22 +0200; 7567 bytes] `Re: [asterisk-users] Playing MP3's in...'. > info: msgid=<20190903151022.354xpe6ds2vglher(a)red.localdomain>: stored mail into mailbox 'l/as/users'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Wed, 4 Sep 2019 01:04:49 +0900; 14858 bytes] `Re: [Hyperledger Fabric] a primitive ...'. > info: msgid=<160901d8-b903-9e9a-91ac-267571b0e24d(a)gmx.com>: stored mail into mailbox 'l/hl/fabric'. > info: message expunged from source mailbox upon successful move. > info: filtering: [Tue, 3 Sep 2019 09:55:22 -0700 (PDT); 13337 bytes] `[awx-project] Re: AWX on Kubernetes m...'. > info: msgid=<f9bc4e6a-8445-4b34-927a-35f577ffcc07(a)googlegroups.com>: stored mail into mailbox 'l/ansible/awx'. > info: message expunged from source mailbox upon successful move. > 2 ▶︎️ zen@eye 20190912@07:02:30 ~ $ > > > So about 3/4 of a second is spent by dovecot's sieve-filter, on each > email that it processes - watching it is painful given how fast Gnu > sieve has been for the last few years - it's almost (but not quite) > as slow as my previous fetchmail email download per-email time. > > Attached is a -D debug run of sieve-filter on 20 emails - slightly > longer than the above, and took roughly 15 seconds to run. > > Any help appreciated... On another test run of ~600 emails, sieve-filter is consistently running ~100% of one CPU (for about 4 minutes) to process these emails, which leads to the conclusion that despite what looks like should be a batch process, sieve-filter is perhaps reloading the rules for every single email that it processes, even though I gave it a whole mbox, and not a single email, to process. Can sieve-filter work the way it should / the way I want it / batch process a whole mbox - without reloading the sieve rules for every email? ----- End forwarded message -----

3 2

Re: [Bug] Sieve vacation :addresses match only,> case-sensitive?
by Klaus Steinberger 12 Sep '19

12 Sep '19

> I want to have it case-insensitive again, like in Pigeonhole version 0.4.24 i would also plea for making it case-insensitive again! We were hit by this too, and I never saw any mail system in which the local Part ist Case sensitive! Sincerly, Klaus Steinberger -- Rechnerbetriebsgruppe / IT, Fakultät für Physik Klaus Steinberger FAX: +49 89 28914280 Tel: +49 89 28914287

6 5

WARNING: using attachment_dir with plugin zlib can corrupt mails
by Patrick Cernko 12 Sep '19

12 Sep '19

Hello list, hello Dovecot developers, this week, I discovered a serious bug in Dovecot, that lead to several broken mails on our servers. The bug corrupts the first few characters of the mail header during saving. On our setup, it was almost always only the very first line of text, that was corrupted. Depending on the IMAP client (they seem to request different header fields, ... during mail access), the bug causes the imap process to hang up the TCP connection and log errors like this: > imap(USERNAME)<4767><TeQP4ASOTK5/AAAB>: Error: Corrupted record in index cache file /IMAP/mail/mailboxes/USERNAME/mdbox/mailboxes/Trash/dbox-Mails/dovecot.index.cache: UID 489113: Broken fields in mailbox Trash: read(attachments-connector(zlib(/IMAP/mail/mailboxes/USERNAME/mdbox/storage/m.813))): FETCH BODY[HEADER.FIELDS (RETURN-PATH SUBJECT)] got too little data: 2 vs 122 In our case that finally grabbed my attention, the client was the users iphone that did not display any new messages but his Thunderbird did. The bug seems to be triggered by a bad "interaction" of attachment_dir option and zlib plugin. If you use both, you most likely are affected, too, except you only use zlib plugin for reading previously compressed stored mails. That's also the workaround we use now: zlib plugin only enabled in mail_plugins but no plugin/zlib_save set. The bug occurs on very specific mails. Due to privacy reasons I could not provide sample mails here. Storing such mails seems to trigger the bug reproducible. I attached a very minimal doveconf -n config, that can be used to trigger the bug. If one of the developers is interested, I can try to generate an "anonymized" version of such a specific mail that still causes the issue. I discovered the bug on our productive systems, running latest Dovecot 2.2 release, but the latest 2.3 I used during debugging is affected, too. During debugging, I also found one hint, that might help find the bug: If you store a problematic mail with zlib_save=gz (or zlib_save=bz2) and then disable the zlib plugin in mail_plugins, you can call doveadm fetch -u test hdr all | grep -v ^hdr: | gzip --decompress on test's mailbox with only that one broken mail. This will display the beginning of the rfc822 mail text until gzip terminates with "gzip: stdin: unexpected end of file", approximately after twice the length of the mail HEADER. This might indicate, that dovecot stores the uncompressed size of the header in it's data structures although the mail is stored compressed. I also found a very efficient way to find all affected mails in our setup: doveadm -f flow fetch -A 'user guid mailbox uid seq flags hdr' all | \ grep -a "^[^ ]+ user=" | \ grep -avF ' hdr=Return-path: ' | \ grep -av '.* hdr=[[:print:][:space:]]*$' (runtime for ~6M mails on our servers was 20-30min) This can be even more optimized if you have a powerful storage system with GNU parallel: > doveadm user '*' | parallel "doveadm -f flow fetch -u '{}' 'user guid mailbox uid seq flags hdr' all | grep -a '^user=' | grep -avF ' hdr=Return-path: ' | grep -av '.* hdr=[[:print:][:space:]]*$' || true" (runtime for ~6M mails on our servers was ~4min) The command will give you a list of mails that possibly are affected, check the full output of doveadm fetch -u USERNAME hdr guid GUID | less to verify that the header is really broken. On our systems I found 39 mails within ~12M mails. I was able to recover these mails "manually" by reconstructing the Return-Path header line, importing the fixed mails and expunging the corrupt ones. Before importing, I had to disable zlib_save option obviously. Best regards, -- Patrick Cernko <pcernko(a)mpi-klsb.mpg.de> +49 681 9325 5815 Joint Administration: Information Services and Technology Max-Planck-Institute fuer Informatik & Softwaresysteme

4 4

pigeonhole/lda accessing -m folder
by matthias lay 12 Sep '19

12 Sep '19

Hi all, anybody knows, if there is a way to acces the folder from a call like this deovecot-lda -m destfolder from within a sieve script? thx in advance matze

5 9

Re: Gnu sieve vs Dovecot sieve-filter - sieve-filter extremely slow at lda (writing emails to local mbox files)
by Zenaan Harkness 12 Sep '19

12 Sep '19

(I did subscribe to this mailing list, albeit with zen at freedbms.net, so either way I'm getting all your emails - thank you -so- much for replying...) MUA is mutt, reading email in a terminal (sorry, forgot to mention this before). For many years now my email folder (mbox files) collection has grown to many GiB, mostly mailing lists. If I am to change email storage format, it should be mutt compatible; looking at https://wiki2.dovecot.org/MailboxFormat I see that only DJB's Maildir is compatible with both Dovecot ("a reliable choice" says the wiki), and mutt. I can imagine that sdbox or mdbox could be made "mutt compatible" so to speak, by running some sort of local IMAP server, and accessing my email from mutt that way; this is undesirable to my mind because this would require: 1) a new learning curve wrt mutt and reading email on IMAP servers 2) a new learning curve to set up a local IMAP server (securely) 3) the inability to use mutt without a local IMAP server to read my local email but such a setup would also have some quite desirable benefits: 1) once set up, multiple MUAs could be used, and I'd have a beginning grasp on setting up an IMAP server and front ends (this is something on my bucket list, to assist my local church with) 2) simpler remote "online" access to my local "offline" email store (e.g. using my mobile phone when on the road) by setting up a webmail server (much simpler (read "possible" to use on a mobile phone) than using a vpn and mutt...), thus freeing me up from the behemoth web email providers... Next, I do not know how to "pipe the messages to the dovecot lda". After downloading from my POP3 provider into a local mbox file (this is my step 1), then I sort the emails (this is my step 2): the following should be on a single line: /usr/bin/sieve-filter -veW -c $HOME/etc/email/sieve-dovecot-config.conf -o mail_location=mbox:~/mail:INBOX=~/mail/Inbox:INDEX=:UTF-8:VOLATILEDIR=/tmp/dovecot-volatile/%2.256Nu/%u:SUBSCRIPTIONS=dovecot_subscriptions ~/etc/email/sieve.rc email-incoming-unsorted As you can see from the above command, sieve-filter is given the name of the mbox ("mail folder") to sort, as its very last argument on the command line - so in this instance, sieve-filter really has no excuse, and should be not be re-reading the sieve rules script for each email - now perhaps that's not happening, I only made an assumption because of a CPU hitting 100% for a minute or two just to process a few 100 emails... What could also be happening (again, an assumption), is that sieve-filter is written to assume dovecot index files to be in existence. I disabled those with the "INDEX=" clause you see in the command above, which obviously has been given no value. The reason I figured out how to disable the creation of the indexes in the .imap directories, is that for my setup, Gnu sieve has proven that I should not need such indexes - with mbox files, just append each email to the end of the target "mailbox folder" mbox file, and we're done! This literally should not cost 100% CPU, even for one millisecond! But more importantly, because my working email folder is ~30GiB, without disabling this index creation step, sieve-filter forced the creation of indexes, which "took so long I gave up and hit CTRL-C, which did not work, so I kill -9'ed the sieve-filter and whatever other process was not stopping". Last year someone on debian-user recommended I upgrade to using Dovecot/Pigeonhole's sieve-filter (rather than Gnu sieve) due to the issues with Gnu sieve. I am starting to think that I should perhaps try to figure out if it's possible to (re)process the emails Gnu sieve has a problem with, to massage them into a shape that Gnu sieve accepts - then my immediate problem would certainly be solved... Thank you all again.. Zenaan

1 1

Subscribe to a fileinto :create mailbox?
by Larry Rosenman 11 Sep '19

11 Sep '19

Is it possible in pigeonhole? I.E. I do a fileinto :create "some/mail/box" How can I make it autosubscribe? doveconf -n: # 2.3.7.2 (3c910f64b): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: FreeBSD 12.0-STABLE amd64 # Hostname: thebighonker.lerctr.org auth_default_realm = lerctr.org auth_mechanisms = plain login auth_realms = lerctr.org thebighonker.lerctr.org tbh.lerctr.org thejonesonair.com thejonesonair.net why.net default_vsz_limit = 1 G deliver_log_format = msgid=%m: %$ (subject=%s from=%f size=%w) doveadm_password = # hidden, use -P to show it first_valid_gid = 0 first_valid_uid = 0 lda_mailbox_autocreate = yes listen = 192.147.25.65, :: login_access_sockets = tcpwrap mail_attribute_dict = file:%h/mail/.imap/dovecot-mail-attributes mail_location = mbox:~/mail:INBOX=~/mail/INBOX mail_log_prefix = "%s(%u/%p): " mail_plugins = " fts fts_solr notify virtual" mail_privileged_group = mail mail_server_admin = mailto:ler@lerctr.org mail_server_comment = LERCTR Mail Server managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vacation-seconds editheader mboxmetadata servermetadata vnd.dovecot.debug imapsieve vnd.dovecot.imapsieve namespace archive { hidden = no list = no location = mbox:~/MAIL-ARCHIVE prefix = ARCHIVE/ separator = / } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox INBOX { auto = create } mailbox SENT { special_use = \Sent } mailbox SPAM { special_use = \Junk } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } mailbox virtual/Flagged { special_use = \Flagged } mailbox virtual/all { special_use = \All } prefix = separator = / } namespace virtual { hidden = no list = yes location = virtual:~/MAIL-VIRTUAL prefix = Virtual/ separator = / } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = user=%Ln noauthenticate driver = static skip = authenticated } passdb { args = failure_show_msg=yes session=yes max_requests=20 driver = pam override_fields = domain=lerctr.org skip = authenticated } plugin { fts = solr fts_autoindex = yes fts_solr = url=http://thebighonker.lerctr.org:8983/solr/dovecot/ fts_tika = http://localhost:9998/tika/ imapsieve_mailbox1_before = file:/usr/local/share/dovecot-pigeonhole/sieve/report-spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = SPAM imapsieve_mailbox2_before = file:/usr/local/share/dovecot-pigeonhole/sieve/report-ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = SPAM imapsieve_mailbox2_name = * imapsieve_url = sieve://thebighonker.lerctr.org mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename flag_change append mail_log_fields = uid box msgid size from subject vsize flags recipient_delimiter = +-_ sieve = ~/.dovecot.sieve sieve_dir = ~/sieve sieve_execute_bin_dir = /usr/local/share/dovecot-pigeonhole/sieve sieve_extensions = +editheader +vacation-seconds +mboxmetadata +servermetadata +vnd.dovecot.debug sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.execute sieve_pipe_bin_dir = /usr/local/share/dovecot-pigeonhole/sieve sieve_plugins = sieve_imapsieve sieve_extprograms } postmaster_address = postmaster(a)lerctr.org protocols = imap pop3 lmtp sieve recipient_delimiter = +-_ service anvil { unix_listener anvil { group = mail mode = 0666 } } service auth { unix_listener auth-client { mode = 0666 } unix_listener auth-master { mode = 0666 } } service doveadm { inet_listener http { port = 8080 ssl = yes } } service indexer-worker { drop_priv_before_exec = yes } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service stats { unix_listener stats-reader { group = mail mode = 0666 user = } unix_listener stats-writer { group = mail mode = 0666 user = } } service tcpwrap { unix_listener login/tcpwrap { group = $default_login_user mode = 0600 user = $default_login_user } } ssl_cert = </home/ler/letsencrypt-home/*.lerctr.org/fullchain.cer ssl_cipher_list = EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+AESGCM:EECDH:EDH+AESGCM:EDH+aRSA:HIGH:!MEDIUM:!LOW:!aNULL:!eNULL:!LOW:!RC4:!MD5:!EXP:!PSK:!SRP:!DSS ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } userdb { args = username_format=%Ln /etc/passwd driver = passwd-file override_fields = domain=lerctr.org } verbose_proctitle = yes protocol lmtp { mail_plugins = " fts fts_solr notify virtual sieve mail_log" } protocol lda { mail_plugins = " fts fts_solr notify virtual sieve mail_log" } protocol pop3 { mail_plugins = " fts fts_solr notify virtual mail_log" } protocol !doveadm { mail_plugins = " fts fts_solr notify virtual mail_log" } protocol imap { imap_capability = +SPECIAL-USE imap_client_workarounds = tb-extra-mailbox-sep tb-lsub-flags imap_logout_format = in=%i out=%o fhc=%{fetch_hdr_count} fhb=%{fetch_hdr_bytes} fbc=%{fetch_body_count} fbb=%{fetch_body_bytes} del=%{deleted} exp=%{expunged} trash=%{trashed} imap_metadata = yes mail_max_userip_connections = 50 mail_plugins = " fts fts_solr notify virtual mail_log imap_sieve imap_zlib" } -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106

2 1

Case sensitive problem for vacation with dovecot lmtp pigeonhole
by kadafax＠gmail.com 11 Sep '19

11 Sep '19

Hi list, This issue was raised here by John Fawcett on 12/02/19 but got no response. So, as I'm facing the same issue, I would like to try again: When using the vacation sieve extension, if I send an email to user.name(a)mydomain.com it will work, but not to User.Name(a)mydomain.com. Is there a way to make the user part case insensitive so that the vacation auto-reply is fired whatever the way user part is written ? doveconf -n output: # 2.3.5.1 (7ec6d0ade): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.5.5 (2483b085) # OS: Linux 3.10.0-957.5.1.el7.x86_64 x86_64 CentOS Linux release 7.6.1810 (Core) ext4 # Hostname: myserver.mydomain.com auth_master_user_separator = * auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@* auth_verbose = yes debug_log_path = /var/log/dovecot-debug.log default_client_limit = 10640 default_process_limit = 2128 default_vsz_limit = 0 hostname = mydomain.com info_log_path = /var/log/dovecot.log lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = * log_path = /var/log/dovecot-error.log login_greeting = Welcome mail_gid = vmail mail_location = maildir:/var/vmail/%Ln mail_plugins = quota fts fts_lucene mail_uid = vmail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = maildir:/var/vmail/%Ln mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = type = private } passdb { args = /usr/local/etc/dovecot/deny-users deny = yes driver = passwd-file } passdb { args = /usr/local/etc/dovecot/master-users driver = passwd-file master = yes pass = yes } passdb { args = /usr/local/etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { fts = lucene fts_autoindex = yes fts_lucene = whitespace_chars=@. quota = maildir:User quota quota_rule = *:storage=30GB quota_rule2 = Trash:storage=+200M quota_warning = storage=95%% quota-warning 95 %u quota_warning2 = storage=80%% quota-warning 80 %u sieve = /var/sieve-scripts/%Ln.sieve sieve_dir = /var/vmail/%Ln/home/sieve } postmaster_address = postmaster(a)mydomain.com protocols = imap pop3 lmtp sieve sieve quota_full_tempfail = yes service auth-worker { user = $default_internal_user } service auth { unix_listener /var/spool/postfix/private/auth { mode = 0777 user = vmail } } service imap-login { inet_listener imaps { port = 993 ssl = yes } process_min_avail = 10 } service imap { process_limit = 2128 } service lmtp { executable = lmtp -L process_min_avail = 15 unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3s { port = 995 ssl = yes } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh user = nobody } ssl_cert = </etc/letsencrypt/live/myserver.mydomain.com/fullchain.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /usr/local/etc/dovecot/dovecot-ldap-userdb.conf.ext driver = ldap override_fields = uid=vmail gid=vmail home=/var/vmail/%Ln/home } protocol imap { mail_max_userip_connections = 30 mail_plugins = quota fts fts_lucene imap_quota } protocol lmtp { info_log_path = /var/log/dovecot-lmtp.log log_path = /var/log/dovecot-lmtp-errors.log mail_plugins = quota fts fts_lucene sieve } protocol sieve { mail_max_userip_connections = 20 }

2 2

Quota and maildir does not work with subfolders of INBOX
by Niels Kobschätzki 11 Sep '19

11 Sep '19

Hi, we just upgraded on FreeBSD (11.2-p14) from Dovecot 2.2 to Dovecot 2.3.7.2 and now we have kind of a big problem: the quota-plugin does not work correctly anymore. If a user has a subfolder of the INBOX (like .INBOX.foobar) the quota-calculation does not work anymore. It seems to be arbitrary but users get counted like double and more than they actually have in mails (the number of mails is correct, but the size gets calculated wrongly). The moment I remove those folders, the size gets calculated correctly. Unfortunately those folders are generated by some clients automatically afaik (like .INBOX.Trash) What can we do about that? There were already messages to the list about this in July 2018 but I didn't find any solution https://dovecot.org/pipermail/dovecot/2018-July/112439.html https://dovecot.org/pipermail/dovecot/2018-July/112440.html Niels

3 4

Off-site cloud backup (eg Amazon S3, Wasabi)
by James Brown 11 Sep '19

11 Sep '19

I’d like to synchronise our mail store to an Amazon S3 bucket or similar, for protection from ransomware. Server is running on macOS with maildir. Should I use a Dovecot process, rsync, a Mac app like Arq or Jungle Disk, or something else? Anyone have experience or opinions on this? Thanks, James.

3 2

Random duplicated emails
by Francis 11 Sep '19

11 Sep '19

Hello, I migrated our mail infrastructure to Dovecot on Ubuntu 18.04 some months ago. It works fine, but recently some users told me that they sometime receive duplicated emails. Same email content, same headers including message-id. I'm using two dovecot servers on two sites. Both server are in cluster. We don't use shared folders. All users that reported this issue so far are using the same server instance. The problematic emails are coming from local users on that instance too. The examples they given to me was emails with many recipients (To/CC). A specific message can be received twice (or more) by recipient A but only once by recipient B. I didn't see anything in the logs about sieve rules that redirect emails to others recipients. Where should I look to diagnostic this issue? Thanks. Server config: # 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.21 (92477967) doveconf: Warning: service auth { client_limit=1000 } is lower than required under max. load (2500) doveconf: Warning: service anvil { client_limit=1000 } is lower than required under max. load (1503) # OS: Linux 4.15.0-60-generic x86_64 Ubuntu 18.04.3 LTS auth_default_realm = **edited** auth_master_user_separator = * auth_mechanisms = plain login default_process_limit = 500 first_valid_uid = 200 last_valid_uid = 200 mail_location = mbox:~/mail:INBOX=/var/mail/%u mail_plugins = " notify replication zlib quota" mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext vnd.dovecot.debug mdbox_rotate_size = 10 M namespace inbox { inbox = yes location = mailbox "Éléments envoyés" { special_use = \Sent } mailbox "Éléments supprimés" { special_use = \Trash } mailbox Brouillon { special_use = \Drafts } mailbox "Courrier indésirable" { special_use = \Junk } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = INBOX/ separator = / } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { args = /etc/dovecot/passwd.masterusers driver = passwd-file master = yes } plugin { mail_replica = tcps:**edited**:53683 quota = count:User quota quota_grace = 10%% quota_rule = *:storage=10G quota_rule2 = INBOX/Trash:storage=+100M quota_status_nouser = DUNNO quota_status_overquota = 552 5.2.2 La boite courriel du destinataire est pleine - Mailbox is full quota_status_success = DUNNO quota_vsizes = yes quota_warning = storage=100%% quota-warning 100 %u quota_warning2 = storage=95%% quota-warning 95 %u quota_warning3 = storage=90%% quota-warning 90 %u quota_warning4 = storage=85%% quota-warning 85 %u quota_warning5 = storage=75%% quota-warning 75 %u quota_warning6 = -storage=80%% quota-warning '-80' %u quota_warning7 = -storage=100%% quota-warning '-100' %u sieve = /var/vmail/domains/%Ld/%Ln/.dovecot.sieve sieve_before = /var/vmail/sieve/before.sieve sieve_default = /var/vmail/sieve/default.sieve sieve_extensions = +vnd.dovecot.debug sieve_global = /var/vmail/sieve/global zlib_save = lz4 } protocols = " imap lmtp sieve" service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { group = vmail mode = 0666 user = vmail } } service imap-login { inet_listener imap { port = 0 } process_min_avail = 10 } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } service quota-status { client_limit = 1 executable = quota-status -p postfix inet_listener { address = **edited** port = 53684 } } service quota-warning { executable = script /usr/local/bin/quota-warning.sh unix_listener quota-warning { user = vmail } } ssl = required ssl_cert = </etc/ssl/**edited**/**edited**.crtbundle ssl_client_ca_dir = /etc/ssl/certs ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lmtp { mail_plugins = " notify replication zlib quota sieve" postmaster_address = postmaster@**edited** } protocol imap { mail_plugins = " notify replication zlib quota imap_zlib imap_quota" } -- Francis

4 4

Dovecot Director upgrade from 2.2 to 2.3
by Alessio Cecchi 10 Sep '19

10 Sep '19

Hi, I have a setup with 3 Dovecot Director v2.2.36 and director_consistent_hashing = yes ;-) Now I would like to upgrade to 2.3.7, first only Director and after also Backend. Can works fine a ring of director with mixed 2.2 and 2.3 version? Mi idea is to setup a new Director server with 2.3, stop one server with 2.2 and insert the new 2.3 in the current ring to check if works fine. If all works fine I will replace all Director 2.2 with 2.3 version. Thanks -- Alessio Cecchi Postmaster @ http://www.qboxmail.it https://www.linkedin.com/in/alessice

2 6

dovecot duplicate emails
by Битус Павел 10 Sep '19

10 Sep '19

Hello. I have problems with duplicate emails when using replication and configured message filters on the client. Looks like when letter comes, it processed by replication and immediately after this processed by filter on client and moved to another folder. When it arrives to slave server into INBOX, it replicated back to master into INBOX and only after that - slave receives MOVE command. The only thing I see in the log is that the letter comes 2 times with same msgid: Sep 10 15:01:31 lmtp(USERNAME(a)DOMAIN.com.ua)<9306><UD3fJJuQd11aJAAA8J4ONg>: Info: sieve: msgid=<f3701949-360e-e15d-3d76-7465f23fb0ba(a)DOMAIN.com.ua>: stored mail into mailbox 'INBOX' Sep 10 15:01:31 indexer-worker(USERNAME(a)DOMAIN.com.ua)<12248><UD3fJJuQd11aJAAA8J4ONg:GEsdNJuQd13YLwAA8J4ONg>: Info: Indexed 1 messages in INBOX (UIDs 55963..55963) Sep 10 15:01:32 imap(USERNAME(a)DOMAIN.com.ua)<9674><zqysnTGSU8tYUeJ+>: Info: copy from INBOX: box=INBOX.Jira, uid=5034, msgid=<f3701949-360e-e15d-3d76-7465f23fb0ba(a)DOMAIN.com.ua>, size=23393 Sep 10 15:01:32 imap(USERNAME(a)DOMAIN.com.ua)<9674><zqysnTGSU8tYUeJ+>: Info: expunge: box=INBOX, uid=55963, msgid=<f3701949-360e-e15d-3d76-7465f23fb0ba(a)DOMAIN.com.ua>, size=23393 Sep 10 15:01:32 indexer-worker(USERNAME(a)DOMAIN.com.ua)<12248><zqysnTGSU8tYUeJ+:oC6vHZyQd13YLwAA8J4ONg>: Info: Indexed 1 messages in INBOX.Jira (UIDs 5034..5034) Sep 10 15:01:33 indexer-worker(USERNAME(a)DOMAIN.com.ua)<12248><pQBKNpuQd13/OgAA8J4ONg:WIrkC52Qd13YLwAA8J4ONg>: Info: Indexed 1 messages in INBOX (UIDs 55964..55964) Sep 10 15:01:33 imap(USERNAME(a)DOMAIN.com.ua)<9674><zqysnTGSU8tYUeJ+>: Info: copy from INBOX: box=INBOX.Jira, uid=5035, msgid=<f3701949-360e-e15d-3d76-7465f23fb0ba(a)DOMAIN.com.ua>, size=23393 Sep 10 15:01:33 imap(USERNAME(a)DOMAIN.com.ua)<9674><zqysnTGSU8tYUeJ+>: Info: expunge: box=INBOX, uid=55964, msgid=<f3701949-360e-e15d-3d76-7465f23fb0ba(a)DOMAIN.com.ua>, size=23393 Sep 10 15:01:34 indexer-worker(USERNAME(a)DOMAIN.com.ua)<9417><zqysnTGSU8tYUeJ+:gKqSOJ2Qd13JJAAA8J4ONg>: Info: Indexed 1 messages in INBOX.Jira (UIDs 5035..5035) Can you help me with this problem? dovecot --version 2.3.7.2 (3c910f64b) dovecot -n # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 4.19.66-gentoo x86_64 Gentoo Base System release 2.6 # Hostname: leon.DOMAIN.com.ua auth_cache_negative_ttl = 30 secs auth_cache_size = 256 M auth_cache_verify_password_with_worker = yes auth_gssapi_hostname = $ALL auth_krb5_keytab = /etc/krb5.keytab auth_mechanisms = gssapi ntlm plain login cram-md5 digest-md5 auth_worker_max_count = 2048 debug_log_path = /var/log/dovecot/dovecot_debug.log default_client_limit = 8492 default_vsz_limit = 2 G dict { lastlogin = mysql:/etc/dovecot/dovecot-dict-sql-lastlogin.conf } doveadm_password = # hidden, use -P to show it first_valid_uid = 8 imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags listen = * log_path = /var/log/dovecot/dovecot.log mail_attribute_dict = file:%h/Maildir/dovecot-attributes mail_fsync = never mail_gid = mail mail_location = maildir:%h mail_max_keyword_length = 4096 mail_plugins = " notify replication zlib fts fts_solr mail_log notify" mail_uid = mail maildir_stat_dirs = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mbox_lazy_writes = no metric imap_commands { event_name = imap_command_finished } namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = /etc/dovecot/dovecot-ldap-people.conf.ext driver = ldap } passdb { args = /etc/dovecot/dovecot-ldap-calendar.conf.ext driver = ldap } plugin { fts = solr fts_autoindex = yes fts_autoindex_max_recent_msgs = 100 fts_solr = url=http://SOLR_IP_ADDRESS:8983/solr/dovecot/ last_login_dict = proxy::lastlogin mail_log_cached_only = yes mail_log_events = delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size mail_replica = tcp:REPLICATE.DOMAIN.com.ua:4092 replication_dsync_parameters = -d -N -l 30 -U replication_full_sync_interval = 7 days sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = /etc/dovecot/sieve/default.sieve sieve_before2 = /etc/dovecot/sieve/default_spam.sieve zlib_save = gz zlib_save_level = 9 } postmaster_address = root(a)DOMAIN.com.ua protocols = imap pop3 lmtp sieve replication_max_conns = 50 service aggregator { fifo_listener replication-notify-fifo { user = mail } unix_listener replication-notify { user = mail } } service auth { unix_listener auth-client { mode = 0660 user = mail } unix_listener auth-master { mode = 0600 user = mail } unix_listener auth-userdb { mode = 0600 user = mail } } service config { unix_listener config { mode = 0600 user = mail } } service dict { unix_listener dict { group = mail mode = 0600 user = mail } } service doveadm { inet_listener { port = 4092 } } service imap-login { process_min_avail = 8 service_count = 0 vsz_limit = 256 M } service imap { client_limit = 10 process_limit = 4096 process_min_avail = 50 service_count = 100 } service lmtp { process_limit = 70 process_min_avail = 20 } service managesieve-login { inet_listener sieve { port = 4190 } } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 0 } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { group = mail mode = 0660 } vsz_limit = 20 G } ssl_cert = </etc/ssl/my_certs/fullchain1.pem ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } userdb { args = /etc/dovecot/dovecot-ldap-people.conf.ext driver = ldap } userdb { args = uid=mail gid=mail home=/home/DOMAIN.com.ua/%Ln username_format=%Ln(a)DOMAIN.com.ua mail=maildir:/home/DOMAIN.com.ua/%Ln:UTF-8 driver = static } protocol lmtp { auth_username_format = %Lu mail_fsync = optimized mail_plugins = " notify replication zlib fts fts_solr mail_log notify sieve" } protocol lda { mail_fsync = optimized } protocol imap { imap_idle_notify_interval = 5 mins imap_max_line_length = 4 M imap_metadata = yes mail_max_userip_connections = 2048 mail_plugins = " notify replication zlib fts fts_solr mail_log notify fts fts_solr last_login" } protocol sieve { managesieve_max_line_length = 65536 }

1 0

New to dovecot admin, question about testing a dovecot configuration
by Gerben Wierda 10 Sep '19

10 Sep '19

I am new to dovecot administration, not new to postfix administration. When setting up a new postfix/dovecot combo from scratch, can I start with dovecot alone and still be able to test it? E.g. can I address the local delivery agent with some sort of test email? If so, how? I haven’t been able to find it in the wiki. Gerben Wierda Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/> Architecture for Real Enterprises <https://www.infoworld.com/blog/architecture-for-real-enterprises/> at InfoWorld On Slippery Ice <https://eapj.org/on-slippery-ice/> at EAPJ

1 0

Force dovecot-uidlist reset
by Tom Sommer 09 Sep '19

09 Sep '19

Is there a way to force Dovecot to rebuild dovecot-uidlist from zero? It seems deleting all indexes and dovecot-* files followed by "doveadm force-resync" is not enough? It just gets the same UIDs? Perhaps from Maildir filenames? But I would like to reset the uid of all mails. Thanks -- Tom

1 1

doveadm mailbox list
by Daniel Miller 08 Sep '19

08 Sep '19

It's quite likely I'm doing it wrong, but... Given a valid mailbox... doveadm mailbox list -u <username> realmb returns "realmb" doveadm mailbox list -u <username> real* returns "realmb" Seems reasonable. Now, with a non-existent mailbox... doveadm mailbox list -u <username> bogus returns "bogus" doveadm mailbox list -u <username> bogus* returns "" Is this a bug or correct behavior? -- Daniel

2 1

TLS not working with iOS beta?
by Henrik Johansson 08 Sep '19

08 Sep '19

Hi, Have anyone else experienced problems using Dovecot with the mail app in beta releases of iOS/iPadOS 13? TLS is failing for my, it have worked fine for years and I am on the latest Dovecot version now, it works fine with older clients but not with the ones upgraded: Sep 04 19:49:16 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization Sep 04 19:49:16 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization Sep 04 19:49:16 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv2/v3 read client hello A Sep 04 19:49:16 imap-login: Debug: SSL alert: where=0x4008, ret=552: fatal handshake failure Sep 04 19:49:16 imap-login: Debug: SSL: where=0x2002, ret=-1: error Sep 04 19:49:16 imap-login: Debug: SSL: where=0x2002, ret=-1: error Sep 04 19:49:16 imap-login: Debug: SSL error: SSL_accept() failed: error:1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher Sep 04 19:49:16 imap-login: Debug: SSL: where=0x2002, ret=-1: error Sep 04 19:49:16 imap-login: Debug: SSL error: SSL_accept() failed: error:140800FF:SSL routines:ssl3_accept:unknown state Sep 04 19:49:16 imap-login: Info: Disconnected (no auth attempts in 0 secs): user=<>, rip=11.22.33.44, lip=11.22.33.44, TLS handshaking: SSL_accept() failed: error:140800FF:SSL routines:ssl3_accept:unknown state, session=<lz7m2r2rjPouOvrk> Working client: Sep 04 19:57:58 imap-login: Debug: SSL: where=0x10, ret=1: before/accept initialization Sep 04 19:57:58 imap-login: Debug: SSL: where=0x2001, ret=1: before/accept initialization Sep 04 19:57:58 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv2/v3 read client hello A Sep 04 19:57:58 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client hello A Sep 04 19:57:58 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server hello A Sep 04 19:57:58 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write certificate A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write key exchange A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write server done A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client certificate A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A Sep 04 19:58:01 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read client key exchange A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read client key exchange A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read certificate verify A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2002, ret=-1: SSLv3 read finished A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 read finished A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write change cipher spec A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 write finished A Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2001, ret=1: SSLv3 flush data Sep 04 19:58:03 imap-login: Debug: SSL: where=0x20, ret=1: SSL negotiation finished successfully Sep 04 19:58:03 imap-login: Debug: SSL: where=0x2002, ret=1: SSL negotiation finished successfully Sep 04 19:58:03 imap-login: Info: Login: user=<username>, method=LOGIN, rip=11.22.33.44, lip=11.22.33.44, mpid=28781, TLS, TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits), session=<LklR9r2Vtb4uOzra> Config: # egrep -v "^#|^$" 10-ssl.conf 10-auth.conf 10-ssl.conf:ssl = required 10-ssl.conf:ssl_cert = </path/to/fullchain.pem 10-ssl.conf:ssl_key = </path/to/privkey.pem 10-ssl.conf:ssl_dh = </path/to/dh.pem 10-ssl.conf:ssl_min_protocol = TLSv1.1 10-ssl.conf:ssl_cipher_list = ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH 10-auth.conf:disable_plaintext_auth = yes 10-auth.conf:auth_mechanisms = login 10-auth.conf:!include auth-system.conf.ext # dovecot --version 2.3.7.2 (3c910f64b) Anyone seeing something similar and/or have suggestions on how to proceed? Regards Henrik

4 7

intermittent failures when reuse_port is enabled
by Imre Rad 08 Sep '19

08 Sep '19

I'm encountering connection issues to Dovecot when reuse_port is activated. Some of the connections work fine, but about every 3rd of them does not receive the banner after the TCP connection has established: # nc -v 10.6.7.133 143 Connection to 10.6.7.133 143 port [tcp/imap2] succeeded! * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Hello. ^C # nc -v 10.6.7.133 143 Connection to 10.6.7.133 143 port [tcp/imap2] succeeded! * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN AUTH=LOGIN] Hello. ^C # nc -v 10.6.7.133 143 Connection to 10.6.7.133 143 port [tcp/imap2] succeeded! ^C The relevant processes listening on this port: # netstat -nap|grep 143 tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 15110/dovecot/imap- tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 15103/dovecot/imap- tcp 5 0 0.0.0.0:143 0.0.0.0:* LISTEN 15100/dovecot After removing the reuse_port = yes configuration directive there is only one single process listening (and the service is running without any issues): # netstat -nap|grep 143 tcp 0 0 0.0.0.0:143 0.0.0.0:* LISTEN 15292/dovecot The test config was Linux 4.9.0-4-amd64 on debian-stretch and dovecot-2.2.36.4 (compiled by me) running on a VM with 1 CPU core. If that matters, dovecot was started in a docker container but using the hosts's network namespace. What am I missing? Thanks, Imre

1 0

configure: error: fd passing is required for Dovecot to work
by zahn 06 Sep '19

06 Sep '19

Hello I changed our old gcc compiler from the version: gcc-4.1.2-13.fc6 to the newer one: gcc version 8.3.0 (GCC). Then I wanted to compile: Dovecot 2.3.7 and I get the following error with ./configure CPPFLAGS="-I/usr/local/openssl/include" \ LDFLAGS="-L/usr/local/openssl/lib" \ ./configure --prefix=/usr/local/dovecot \ --disable-static \ --with-ssl=openssl checking whether fd passing works... no configure: error: fd passing is required for Dovecot to work With the old Compiler configure works well. I couldn't find a solution on the Internet - can you help me ? -- Schöne Grüsse aus Oberdiessbach Martin Zahn Akadia AG Martin Zahn Software Ing. HTL Oracle Certificate Professional Information Technology Fichtenweg 10 CH-3672 Oberdiessbach Tel: +41 79 410 27 87 Web: www.akadia.com E-Mail: martin.zahn(a)akadia.com

3 2

Namespace structure
by Daniel Miller 06 Sep '19

06 Sep '19

Is the following "legal" for Dovecot? And...is this separation recommended or a bad idea? Particularly I'm asking about the "archives" namespace - I haven't actually implemented this yet and I'm checking before I break something. 10-mail.conf # Primary private namespace # Using sdbox for storage namespace inbox { type = private separator = / prefix = location = sdbox:/var/mail/%d/%n/sdbox inbox = yes hidden = no list = yes subscriptions = yes } # For long-term archival namespace archives { type = private separator = / prefix = Archives/ location = mdbox:/var/mail/%d/%n/Archives/mdbox subscriptions = no list = children } # Shared mailboxes mail_shared_explicit_inbox = yes namespace usershares { type = shared separator = / prefix = shared/%%n/ location = sdbox:/var/mail/%%d/%%n/sdbox subscriptions = no list = children } # Virtual mailboxes - for server-side searches namespace virtual { prefix = virtual/ separator = / location = virtual:/var/mail/%d/%n/virtual subscriptions = no list = children } -- Daniel

1 0

login failure after upgrade to dovecot 2.3.7.2
by MK 05 Sep '19

05 Sep '19

Hi List, after upgrading dovecot from version 2.2.33.2 to 2.3.7.2 I got a lot of error messages like the following if the process count of imap processes reaches nearly 1000 (~950 (there are a few pop-connections)). Sep 5 11:27:32 mailbox1 dovecot: imap-login: Internal login failure (pid=27728 id=116): user=<xxxx(a)xxxx.xx>, method=PLAIN, rip=x.x.x.x, lip=x.x.x.x, session=<qETa7cqRzpZV3IEw> Sep 5 11:27:33 mailbox1 dovecot: imap-login: Error: master(imap): net_connect_unix(imap) failed: Resource temporarily unavailable - http://wiki2.dovecot.org/SocketUnavailable (client-pid=27704, client-id=79, rip=x.x.x.x, created 511 msecs ago, received 0/4 bytes) Our setup consists of some servers with dovecot as proxy/redirector as frontend servers, redirecting the logged in users to the backend servers storing the mailboxes. OS is CentOS 6 on both server types. The backend server in question has usually ~ 2500 simultaneous imap connections. Before the update there where no problems. During the update I merged the old 2.2 config into the new 2.3 from the fresh installed binary (Repo from dovecot.org) As I found the failure above in the logfile I testet a lot, to figure out how to fix this, because for me it seemed to be some limit around 1000 connections/processes anywhere in the config. In the end I changed the default value of "default_client_limit" from ist default 1000 to 8192 and the problem was fixed for the moment. Now I'm trying to understand why this fixes the problem and what the difference is between 2.2 and 2.3. For me it seems like something changed in the architecture during the release change, but I didn't find anything. I looked into the release notes and also checked the differences beween the 2.2 and 2.3 default config values (using doveconf -d). Can anyone help? Here is the output of doveconf -n # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 (7372921a) # OS: Linux 2.6.32-696.23.1.el6.x86_64 x86_64 CentOS release 6.10 (Final) auth_mechanisms = plain login default_client_limit = 8192 disable_plaintext_auth = no mail_location = mdbox:%h mail_plugins = quota zlib managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { quota = dict:User quota::file:%h/dovecot-quota quota_warning = storage=90%% quota-warning 90 %u sieve = file:~/sieve;active=~/.dovecot.sieve zlib_save = gz zlib_save_level = 6 } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh protocols = imap pop3 lmtp sieve service imap-login { process_min_avail = 12 service_count = 0 } service imap { process_limit = 8192 } service lmtp { inet_listener lmtp { address = * port = 24 } } service pop3-login { process_min_avail = 12 service_count = 0 } service pop3 { process_limit = 1024 } service quota-warning { executable = script /scripts/quota.sh unix_listener quota-warning { user = vmail } user = vmail } ssl = no userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_proctitle = yes protocol lmtp { mail_plugins = quota zlib sieve } protocol imap { mail_max_userip_connections = 30 mail_plugins = quota zlib imap_quota } protocol pop3 { mail_plugins = quota zlib } greetings, Oliver

1 0