September 2022 - dovecot

Vmail Home
by Silvio Siefke 26 Sep '22

26 Sep '22

Hello, I use Opensmtpd with Dovecot LMTP. All this run but one point I not understand. I use Virtual Users, with System User vmail, home is /var/vmail but dovecot stored message in path /home/vmail/<domain>/user. In configuration files is /var/vmail (dovecot users). Thx for help Silvio ---- cat /etc/passwd | grep vmail vmail:x:2000:2000:Vmail Directory and User:/var/vmail:/usr/sbin/nologin ---- dovecot -n # 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.13 (cdd19fe3) # OS: Linux 5.10.0-18-amd64 x86_64 Debian 11.5 # Hostname: asia.sisi-systems.ovh default_vsz_limit = 1 G doveadm_password = # hidden, use -P to show it doveadm_port = 20000 mail_gid = vmail mail_location = maildir:~/Maildir mail_plugins = " notify replication" 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 imapsieve vnd.dovecot.imapsieve namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = scheme=SHA512-CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } plugin { imapsieve_mailbox1_before = file:/var/vmail/sieve/global/learn-spam.sieve imapsieve_mailbox1_causes = COPY imapsieve_mailbox1_name = Spam imapsieve_mailbox2_before = file:/var/vmail/sieve/global/learn-ham.sieve imapsieve_mailbox2_causes = COPY imapsieve_mailbox2_from = Spam imapsieve_mailbox2_name = * mail_replica = tcp:192.168.1.112 quota = maildir:User quota quota_exceeded_message = Benutzer %u hat das Speichervolumen überschritten. / User %u has exhausted allowed storage space. sieve = file:/var/vmail/sieve/%d/%n/scripts;active=/var/vmail/sieve/%d/%n/active-script.sieve sieve_before = /var/vmail/sieve/global/spam-global.sieve sieve_global_extensions = +vnd.dovecot.pipe +vnd.dovecot.environment sieve_pipe_bin_dir = /usr/bin sieve_plugins = sieve_imapsieve sieve_extprograms } protocols = lmtp imap pop3 sieve service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service doveadm { inet_listener { port = 20000 } } service imap-login { inet_listener imap { port = 143 } vsz_limit = 1 G } service lmtp { unix_listener lmtp { group = vmail user = vmail } } service managesieve-login { inet_listener sieve { port = 4190 ssl = yes } } service managesieve { process_limit = 1024 } service pop3-login { inet_listener pop3 { port = 110 } inet_listener pop3s { port = 995 ssl = yes } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { mode = 0600 user = vmail } } ssl = required ssl_cert = </etc/lego/certificates/imap.sisi-systems.ovh.crt ssl_cipher_list = ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384 ssl_client_ca_dir = /etc/ssl/certs ssl_dh = # hidden, use -P to show it ssl_key = # hidden, use -P to show it ssl_min_protocol = TLSv1.2 userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file override_fields = uid=vmail gid=vmail home=/home/vmail/%d/%n } protocol imap { imap_idle_notify_interval = 29 mins mail_max_userip_connections = 20 mail_plugins = " notify replication quota imap_quota imap_sieve" } protocol lmtp { mail_plugins = " notify replication sieve notify push_notification" postmaster_address = network(a)sisi-systems.ovh } protocol pop3 { mail_max_userip_connections = 10 mail_plugins = " notify replication" }

2 1

Custom post login scripting variables via ID command
by hi＠zakaria.website 26 Sep '22

26 Sep '22

Hi there, I wonder if dovecot would consider this feature request. In post login scripting, given USER, IP, LOCAL_IP, and userdb lookup fields, are only available, I want to push additional variables from web mail to dovecot using ID commands yet I looked at the source in imap-login-cmd-id.c and script-login.c it seems to be possible while I'm not an expert in C and IMAP standards and not sure if its something would break the standards. I hope the dev team to consider this and if anyone have a workaround or an idea with I can start to patch a workaround myself, please let me know as it would be very much appreciated. With thanks. Zakaria.

3 4

what sieve variables / syntax is available to sieve scripts.
by Marc 25 Sep '22

25 Sep '22

1. where can I find all variables like "imap.user" like in mentioned on page[2] 2. I have the impression that variables like "${from}" are all being set from scanning the whole email again seeing these "if matches" statements. Is that not super inefficient? I would assume that such variables would be set and made available upon the receipt of a message. 3. What is the point of this: if environment :matches "imap.user" "*" { set "username" "${1}"; } pipe :copy "sa-learn-ham.sh" [ "${username}" ]; Why can't I just use: pipe :copy "sa-learn-ham.sh" [ "imap.user" ]; [1] require [ "vnd.dovecot.pipe", "copy", "variables" ]; if header :matches "subject" "*" { set "subject" "${1}"; } if header :matches "from" "*" { set "from" "${1}"; } pipe :args [ "USER(a)DOMAIN.TLD", "${from}", "${subject}" ] :copy :try "jabber_notify.sh" ; from page https://wiki.dovecot.org/Pigeonhole/Sieve/Plugins/Pipe [2] if environment :matches "imap.user" "*" { set "username" "${1}"; } pipe :copy "sa-learn-spam.sh" [ "${username}" ]; https://doc.dovecot.org/configuration_manual/howto/antispam_with_sieve/#how…

1 0

test sieve plugin(?) development
by Marc 24 Sep '22

24 Sep '22

Say for testing purposes I would like to add sender email addresses to a database file (eg gdbm) per user. How would I go about doing this? Do I need to create something like in https://github.com/dovecot/pigeonhole/tree/src/lib-sieve/plugins Or can I just create a go binary, and parse data to it? Is there not something like a hello world example for this?

1 0

Duplicate UID warning in dsync backups
by Doug 23 Sep '22

23 Sep '22

Hi, Running dovecot version 2.3.18 with mdbox storage. I run daily backups using dsync on the same server into maildir format. Several times per week I will get an error like the one below that prevents backups from completing. The error is always on my user, never any of my other couple dozen users. dsync(doug): Warning: Deleting mailbox 'INBOX': UID=133060 already exists locally for a different mail: GUIDs don't match (1657786027.M158587P19048.maildev.domain.com vs 581a08178e8ecf62f04700002bad4ea1) dsync(doug): Error: Couldn't delete mailbox INBOX: INBOX can't be deleted. Subsequent backups typically have a slightly different error. dsync(doug): Warning: Deleting mailbox 'INBOX': UID=132994 GUID=407c871b0ec1c562b51000002bad4ea1 is missing locally dsync(doug): Error: Couldn't delete mailbox INBOX: INBOX can't be deleted. Notice the UID and GUID are different from the first error. At this point I will identify 407c871b0ec1c562b51000002bad4ea1 in the source mailbox, and move it to another folder. More often than not that clears things up. The backup command I am using is dsync -u doug all backup maildir:/home/doug/.mailbkup/mailboxes My questions are: Is the "locally" referring to the source or the target of the backup? What might be causing this problem? What the heck is this guid: 1657786027.M158587P19048.maildev.domain.com" Note: The server is actually named mail.domain.com, not maildev.domain.com All file names in the backup maildir have mail.domain.com in them No files exist in the target maildir directory that begin with 1657786027* My original migration from mbox format to mdbox was tested and run on a server named maildev.domain.com. Is that why I am seeing a reference to maildev here? Is that name cached somewhere? Can it be corrected? Does it matter? Are there any options I should add to the dsync command to fix this problem? -- Doug

1 1

pigeonhole (manage)sieve directory permissions
by Peter Gervai 22 Sep '22

22 Sep '22

Hello, I've tried to find info (apart from looking at the sources) but it seems this isn't mentioned anywhere. The setting plugin { sieve = file:~/sievedir;active=~/.sievefilter } names the directory where the scripts are stored and the symlink pointing at one. Right now the sievedir seems to be created 0700 plus some - probably inherited - g+s. How could I change mode (to 02770 preferably)? Also the script files are created 0600 by managesieve which really would be nice to be 0660 instead. The main problem is that external programs shall stat() .sievefilter but they only share groups. Thanks, g

1 0

Outlook 365 MUA produces dovecot changing filename on some mailbox
by Emilio Augusto Lazo Zaia 21 Sep '22

21 Sep '22

Hello I have a setup on which dovecot is the server in a domain on which mailboxes are >20GB, some of them are 150GB or more. When reconfiguring _some_ mailboxes with Outlook 365 (configuring a previously used mailbox on a new PC), the process takes too long even if mail visibility on Outlook is 3 months. Inspecting at INBOX cur directory I did note that the 'ls' command shows the last file listed is a file from year 2020, 2019 or whatever not being the last received mail; that means the alphabetical ordering of 'ls' is showing past years after the last received mail, i.e. dovecot changed the epoch in filename. This only happens with Outlook. Following is an excerpt of ls: -rw-r--r-- 1 coord.ventas ventas 544765 sep 9 10:57 1662769412.M329925P1259441.xyz.com,S=544765,W=552045:2, -rw-r--r-- 1 coord.ventas ventas 163491 sep 5 12:14 1662769412.M74257P1259441.xyz.com,S=163491,W=165846:2,S -rw-r--r-- 1 coord.ventas ventas 3043536 sep 9 12:02 1662769412.M777084P1259441.xyz.com,S=3043536,W=3083246:2, -rw-r--r-- 1 coord.ventas ventas 161002 feb 27 2020 1662874173.M608062P1282222.xyz.com,S=161002,W=163373:2,S -rw-r--r-- 1 coord.ventas ventas 2230491 feb 27 2020 1662874176.M281294P1282222.xyz.com,S=2230491,W=2259506:2,S -rw-r--r-- 1 coord.ventas ventas 167925 feb 27 2020 1662874176.M741229P1282222.xyz.com,S=167925,W=170373:2,S The process of renaming files is continuous until all folder was reread and renamed every file on it. If I issue 'lsof' (with grep) I see the file that is being renamed passing through tmp/ directory and after that, the file is placed under new/ directory (I guess) and Outlook sees a new email to sync, making the sync process too long... mails that have been synced are resynced... Take a look at the timestamp on filenames: 1662769412 corresponds to "Fri Sep 9 20:23:32 -04 2022" and 1662874176 corresponds to Sun Sep 11 01:29:36 -04 2022 but mails were neither sent nor received on that dates. What is Outlook requesting imap server to do and how to avoid this? Thanks -- Emilio Augusto Lazo Zaia

4 6

Debug logging: dovecot-lda command line?
by EML 20 Sep '22

20 Sep '22

Is there some way to configure logging so that I can see the command line that's passed to dovecot-lda? I'm on 2.3.16. Thanks.

1 1

Replicator Failure
by David Morsberger 20 Sep '22

20 Sep '22

Hello, I recently noticed the following errors in my log file and replicator status shows all accounts failed. I am seeing the same error on both hosts. "dovecot: doveadm(name(a)domain.com): Fatal: connect(192.168.1.250:12345) failed: Interrupted system call” # doveadm replicator status Queued 'sync' requests 0 Queued 'high' requests 0 Queued 'low' requests 0 Queued 'failed' requests 0 Queued 'full resync' requests 0 Waiting 'failed' requests 8 Total number of known users 8 Replication used to work and I do not know when it started failing. I restarted dovecot on both hosts to no avail. Any idea on how to get more information and resolve this issue? I cannot find anything else in the logs David

1 2

doveadm-search finds emails, but IMAP search fails to find any
by Philip Warner 20 Sep '22

20 Sep '22

Using dovecot 2.3.7.2 with solr 8.11.2 when I do: doveadm search -u user mailbox INBOX subject "something" I get multiple mail ID's. When I start a manual IMAP session and login as that user, select INBOX, and try the command: . search subject "something" It returns zero mail ID's; this is consistent across all searches using IMAP - no results returned, no matter what I search for in IMAP. The dovecot -n command returns: # 2.3.7.2 (3c910f64b): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.7.2 () # OS: Linux 5.4.0-125-generic x86_64 Ubuntu 20.04.5 LTS # Hostname: WITHELD mail_location = maildir:~/Mail mail_plugins = " fts fts_solr virtual" 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 { location = virtual:~/Mail/virtual prefix = virtual. separator = . } 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 } mailbox virtual.All { comment = All my messages special_use = \All } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { driver = pam } plugin { fts = solr fts_autoindex = yes fts_enforced = yes fts_solr = url=http://localhost:8983/solr/dovecot/ sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = " imap lmtp sieve pop3 sieve" service imap { vsz_limit = 4 G } service index-worker { vsz_limit = 2 G } service indexer-worker { vsz_limit = 2 G } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } } ssl_cert = </etc/letsencrypt/live/WITHELD/fullchain.pem ssl_client_ca_dir = /etc/ssl/certs 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 { driver = passwd } protocol lmtp { mail_plugins = " fts fts_solr virtual sieve" postmaster_address = WITHELD } protocol lda { mail_plugins = " fts fts_solr virtual sieve" } protocol imap { mail_max_userip_connections = 40 } -

2 3

Panic: file mail-index-transaction-finish.c: line 185
by tobisworld＠gmail.com 20 Sep '22

20 Sep '22

Hi list I have weird issue with my Dovecot 2.3.17.1 (476cd46418) When deleting a certain amount of messages from my INBOX via my MUA (Evolution) all over sudden dovecot starts to panic Panic: file mail-index-transaction-finish.c: line 185 (mail_index_transaction_get_uid): assertion failed: (seq <= t->view- >map->hdr.messages_count) imap(REDACTED)<24075><P0/vLkXUNt4KQmMB>: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(backtrace_append+0x42) [0x7f09274d4142] -> /usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f09274d424e] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf72fe) [0x7f09274e22fe] -> /usr/lib64/dovecot/libdovecot.so.0(+0xf73a1) [0x7f09274e23a1] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f0927430e38] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xf438d) [0x7f092789d38d] - > /usr/lib64/dovecot/libdovecot-storage.so.0(+0xf43da) [0x7f092789d3da] -> /usr/lib64/dovecot/libdovecot- storage.so.0(mail_index_transaction_finish+0x177) [0x7f092789da87] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0xf9ad6) [0x7f09278a2ad6] - > /usr/lib64/dovecot/libdovecot- storage.so.0(mail_index_transaction_commit_full+0x9d) [0x7f09278a2fad] -> /usr/lib64/dovecot/libdovecot- storage.so.0(mail_index_transaction_commit+0x1c) [0x7f09278a306c] -> /usr/lib64/dovecot/libdovecot- storage.so.0(mail_cache_set_seq_corrupted_reason+0x61) [0x7f092788c921] -> /usr/lib64/dovecot/libdovecot- storage.so.0(mail_set_mail_cache_corrupted+0xed) [0x7f09277fbbbd] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x7a3e9) [0x7f09278233e9] - > /usr/lib64/dovecot/libdovecot-storage.so.0(+0x7a6b0) [0x7f09278236b0] -> /usr/lib64/dovecot/libdovecot- storage.so.0(mail_get_physical_size+0x38) [0x7f09277e8ba8] -> /usr/libexec/dovecot//lib20_mail_log_plugin.so(+0x2465) [0x7f09263dd465] -> /usr/libexec/dovecot//lib15_notify_plugin.so(notify_contexts_mail_copy+ 0x5c) [0x7f09265e13ec] -> /usr/libexec/dovecot//lib15_notify_plugin.so(+0x25d4) [0x7f09265e25d4] -> /usr/libexec/dovecot//lib10_quota_plugin.so(+0x102ae) [0x7f09269f92ae] -> /usr/libexec/dovecot//lib01_acl_plugin.so(+0xef3e) [0x7f0926c10f3e] -> /usr/lib64/dovecot/libdovecot- storage.so.0(+0x50c4c) [0x7f09277f9c4c] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_move+0x58) [0x7f09277f9ec8] -> dovecot/imap(+0x1175b) [0x55a2c0ea575b] -> dovecot/imap(command_exec+0x64) [0x55a2c0eb3f04] -> dovecot/imap(+0x1dde2) [0x55a2c0eb1de2] -> dovecot/imap(+0x1de71) [0x55a2c0eb1e71] -> dovecot/imap(+0x1e039) [0x55a2c0eb2039] -> dovecot/imap(client_handle_input+0x205) [0x55a2c0eb22f5] -> dovecot/imap(client_input+0x79) [0x55a2c0eb28d9] imap(REDACTED)<24075><P0/vLkXUNt4KQmMB>: Fatal: master: service(imap): child 24075 killed with signal 6 (core dumps disabled - https://dovecot.org/bugreport.html#coredumps) >From that point on ANY access to INBOX from my MUA causes the error. The only way that I found to get around is to unsubscribe the INBOX folder and subscribe again. Then the error is gone until I delete a bunch of messages again. The error only occurs if I delete the messages within short time or select multiple (about 20msg at once). If I delete them one-by-one always waiting for expunge message in dovecot logs to appear then I can delete as many as I want. I have not verified with other MUA but in Evolution I can reproduce the issue. Cheers and have a good one tobi

4 14

Thunderbird can't connect to Dovecot (bad certificate: SSL alert number 42)
by Meikel 19 Sep '22

19 Sep '22

Hi folks, on a Rocky Linux 8.6 based home server I run Dovecot with an account that I use as an archive. Archive means, that from different Thunderbird instances I connect to that Dovecot via IMAPS to move emails there, that I want to keep. Since some days from all Thunderbird instances I can no longer connect to that Dovecot account. In /var/log/maillog of the server I see Sep 14 06:39:54 server3 dovecot[2033173]: imap-login: Disconnected: Connection closed: SSL_accept() failed: error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate: SSL alert number 42 (no auth attempts in 0 secs): user=<>, rip=192.168.177.105, lip=192.168.177.13, TLS handshaking: SSL_accept() failed: error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate: SSL alert number 42, session=<dL1luJvokK3AqLFp> I found that Openssl alert number 42 might be a problem with the SSL certificate (which certificate?) but also might be an expired SSL certificate (which certificate?). As on the Dovecot installation I work with a self signed certificat. I created a new self signed certificate yesterday with an expiry not before year 2032. That did not help, I see the same messages when I try to connect from Thunderbird. Just to see how Thunderbird is involved in the problem I installed Claws-Mail. From Claws-Mail I do NOT have those problems, I can access to Dovecot via IMAPS as expected. I do not understand why all my Thunderbird installations can no longer access Dovecot via IMAPS. This worked fine for about 18 months. I can't prove but I think on beginning of month it worked fine. Something happened meanwhile. If there is a problem with an SSL certificate (bad certificate: SSL alert number 42), which certificate makes the problem? The certificate used by Dovecot or some certificate used in Thunderbird? About installation: cat /etc/redhat-release Rocky Linux release 8.6 (Green Obsidian) dovecot --version 2.3.16 (7e2e900c1a) sudo dovecot -n # 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf # OS: Linux 4.18.0-372.19.1.el8_6.x86_64 x86_64 Rocky Linux release 8.6 (Green Obsidian) # Hostname: ....... auth_debug = yes auth_mechanisms = plain login auth_verbose = yes first_valid_uid = 1000 mail_debug = yes mail_gid = vmail mail_location = maildir:~/Maildir mail_privileged_group = vmail mail_uid = vmail mbox_write_locks = fcntl namespace { inbox = yes location = mailbox Archives { special_use = \Archive } prefix = INBOX/ separator = / type = private } passdb { args = scheme=CRYPT username_format=%u /etc/dovecot/users driver = passwd-file } protocols = imap service imap-login { inet_listener imap { port = 0 } } ssl = required ssl_cert = </etc/dovecot/......crt ssl_cipher_list = PROFILE=SYSTEM ssl_key = # hidden, use -P to show it userdb { args = username_format=%u /etc/dovecot/users driver = passwd-file } verbose_proctitle = yes I used the following command to recreate the SSL certificate for Dovecot: sudo openssl req -x509 -nodes -days 3650 -newkey rsa:4096 -keyout /etc/dovecot/......key -out /etc/dovecot/......crt And with the command openssl s_client -crlf -connect .....:993 I can successfully connect to Dovecot and "simulate" a minimal IMAP-Session: * OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+ AUTH=PLAIN AUTH=LOGIN] Dovecot ready a login meikel.archive@..... topsecret a OK [CAPABILITY IMAP4rev1 SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS THREAD=ORDEREDSUBJECT MULTIAPPEND URL-PARTIAL CATENATE UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS BINARY MOVE SNIPPET=FUZZY PREVIEW=FUZZY LITERAL+ NOTIFY SPECIAL-USE] Logged in a logout * BYE Logging out a OK Logout completed (0.001 + 0.000 secs). closed I have the problem with different Thunderbird installations on various operating systems (Windows 10, Fedora Linux 36 XFCE). Regards, Meikel

10 13

Bug report: TLS SNI for LDAP userdb/passdb
by Tobias Wolter 18 Sep '22

18 Sep '22

Cheers, Dovecot 2.3.4.1 (Debian stable) here, and the changelog does not offer any hope of salvation, so a bug report it is. The LDAP connections for userdb/passdb do not support SNI via TLS. Simple construct to reproduce this: 0.) Have a.pem with SAN `foo.example.com`, b.pem with `bar.example.com` 1.) Configure haproxy frontend with `bind *:636 ssl crt /foo/a.pem ssl crt /foo/b.pem` 2.) Try to use ldaps://bar.example.com/ in passdb, receive "auth: Error: LDAP: Can't connect to server: ldaps://bar.example.com" Expectation, of course, would be for this to work; most libraries should support it, it's probably just a matter of convincing the appropriate binding. Kind regards, -towo

4 4

Client for a Windows User ?
by White, Daniel E. (GSFC-770.0)[AEGIS] 13 Sep '22

13 Sep '22

Specifically, Windows 2016 server I suggested Thunderbird. Is there anything else ? Is this current ? https://wiki.dovecot.org/Clients

6 6

Overquota flag and auth caching
by Christian Rößner 13 Sep '22

13 Sep '22

Hello, I like the over quota flag mechanism in Dovecot. I found out that I get in trouble if a user gets over quota and I have turned on auth caching, because the cache does not automatically invalidate a user while toggling the flag. The cache still serves the old state. The result is that mails are still accepted, even a user went over quota resulting in bounces. Workaround is to flush a user from inside the toggle script, which solves the bounce problem, but it prevents the user from getting under quota before the user is flushed from the cache again. What is the correct way to use the over quota flag and which solutions can be taken to invalidate the user? Is it possible to do this in a Lua user backend? Any other method? Thanks in advance Christian Rößner -- Rößner-Network-Solutions Zertifizierter ITSiBe / CISO Karl-Bröger-Str. 10, 36304 Alsfeld Fax: +49 6631 78823409, Mobil: +49 171 9905345 USt-IdNr.: DE225643613, https://roessner.website PGP fingerprint: 658D 1342 B762 F484 2DDF 1E88 38A5 4346 D727 94E5

2 1

Re: Sieve Symlink Creation
by dovecot＠ptld.com 13 Sep '22

13 Sep '22

> On 09-12-2022 12:16 pm, hi(a)zakaria.website wrote: > > It seems that dovecot doesn't understand the relative format and requires absolute format, per the documentation example. Perhaps find the code which parses the absolute path, and compile your own dovecot build, which can understand the path format you want? I did not find that. I want to learn more, can you link me the dovecot documentation you found explaining how absolute paths are required for sieve? > On 2022-08-25 13:32, dovecot(a)ptld.com wrote: >> The first time when the sieve files and folders get created, the active symlink is created as a full absolute path >> >> .active_sieve -> /mnt/email/domain/user/_sieve/filters.sieve >> >> After that, if you disable and enable the rule set the symlink gets recreated as relative >> >> .active_sieve -> filters.sieve >> >> How can i have the symlink always created as a relative path even on first time creation? >> Having a full absolute path over a mounted NSF is fragile. >> >> Dovecot 2.3.16 >> Pigeonhole 2.3.16 >> >> mail_home = /mnt/email/%d/%n/_dovecot >> mail_location = maildir:/mnt/email/%d/%n/_folders:INDEX=/mnt/email/%d/%n/_dovecot:CONTROL=/mnt/email/%d/%n/_dovecot >> plugin { >> sieve = file:~/../_sieve;active=~/../_sieve/.active_sieve >> sieve_max_script_size = 1M >> sieve_max_actions = 32 >> sieve_max_redirects = 4 >> sieve_quota_max_scripts = 20 >> sieve_quota_max_storage = 5M >> sieve_vacation_min_period = 1d >> sieve_vacation_use_original_recipient = no >> sieve_vacation_dont_check_recipient = no >> sieve_vacation_send_from_recipient = no >> sieve_redirect_envelope_from = sender >> sieve_user_email = %u >> }

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real duplicates of some e-mails / dovecot-2.3.19
by Götz Reinicke 13 Sep '22

13 Sep '22

Hi, we have the issue, that some(!) e-mails we receive are duplicated when processed by dovecot and stored to the users inbox. The mails are binary identical, same message ID, same size etc. diff sees no difference …. For now we only see that it happens do small mails max. +- 5k in size. And in dose not happen for all mails, but some are spam, some are internal mails some are newsletter which are expected…. and it happens for different users. Dose anyone have/had a similar issue? Any suggestion or idea would be helpful. Thanks . Götz

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Handling imap from outlook 365
by Todd Krein 12 Sep '22

12 Sep '22

I apologize if this has been answered before, but... Microsoft Outlook 365 doesn't allow a user to specify the account name for an imap acout, only the email address. Thus fred(a)smith.com<mailto:fred@smith.com> tries to log in as "fred(a)smith.com<mailto:fred@smith.com>" rather than "fred". Has anyone seen a way to fix this (Microsoft help boards are silent), perhaps by stripping the "@smith.com" during the logon procedure? Thanks, Todd Todd Krein | VP Hardware o:650.566.6657 m:408.857.0556 [Ooma_email_sig_11_ooma.jpg] ooma.com<http://ooma.com> _______________________________________ Ooma Confidential and Proprietary (including attachments if any)

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Outlook 365 (RE: dovecot Digest, Vol 233, Issue 20)
by Todd Krein 12 Sep '22

12 Sep '22

Emilio, Thanks for the suggestions, but neither of these worked for me. Manual setup on Outlook 365 (I think as opposed to Outlook 202x), doesn't let you set the account name directly. It's being "helpful." Interestingly enough, if you set up as POP3, it realizes the account name is wrong and lets you enter it once you try to sync. Not so with IMAP. I was able to create the new account on the control panel, but outlook365 ignores all those accounts. Cheers, Todd -----Original Message----- ---------------------------------------------------------------------- Message: 1 Date: Sun, 11 Sep 2022 01:53:21 -0400 From: Emilio Augusto Lazo Zaia <emiliolazozaia(a)gmail.com> To: dovecot(a)dovecot.org Subject: Re: Solved (RE: Handling imap from outlook 365) Message-ID: <5eb6d25f-f9a9-88c5-db01-9306d0925a9c(a)gmail.com> Content-Type: text/plain; charset="utf-8"; Format="flowed" Manual setup or go to Windows Control Panel, Mail / Outlook section and the new account dialog should be like earlier versions of Office... hth Emilio Augusto Lazo Zaia On 9/9/22 16:18, Todd Krein wrote: > > (Sorry for the format, not sure how to reply to a single email in a > digest) > > ?[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\setup] > > "DisableOffice365SimplifiedAccountCreation"=dword:00000001 > > and then chosen manual setup?? That lets us specify 'fred' as the username. > > Ken > > ? > > Ken, > > ????????????? OMG, you are a godsend. Yes, that fixed it completely! > > ????????????? Where do I send the beer? > > ????????????? Best regards, > > ????????????? Todd > > *Todd Krein *| VP Hardware > > o:650.566.6657 ? m:408.857.0556 > > Ooma_email_sig_11_ooma.jpg > > ooma.com <http://ooma.com> > > _______________________________________ > > Ooma Confidential and Proprietary (including attachments if any) >

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Solved (RE: Handling imap from outlook 365)
by Todd Krein 11 Sep '22

11 Sep '22

(Sorry for the format, not sure how to reply to a single email in a digest) "[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\setup] "DisableOffice365SimplifiedAccountCreation"=dword:00000001 and then chosen manual setup? That lets us specify 'fred' as the username. Ken " Ken, OMG, you are a godsend. Yes, that fixed it completely! Where do I send the beer? Best regards, Todd Todd Krein | VP Hardware o:650.566.6657 m:408.857.0556 [Ooma_email_sig_11_ooma.jpg] ooma.com<http://ooma.com> _______________________________________ Ooma Confidential and Proprietary (including attachments if any)

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Unclear how to get both user and domain quotas to work
by Hans van Zijst 10 Sep '22

10 Sep '22

Hi, First of all: my apologies for this long message. I'm trying to post all the information anybody could need to help me on my way. What I'm trying to make is an installation where both users and domains can have quotas. Ideally I would configure a quota for a domain and set a quota of 0 for all users within that domain, so that mail will be accepted up to the point where the domain quota is reached. Setting up user quota was fairly easy, there's lots of documentation around and examples to take inspiration from. Not so much for domain quota however, or I'm really bad at searching the Net. I'm running Debian Bullseye here: MariaDB 10.5.12 Dovecot 2.3.13 Postfixadmin 3.3.10 I want to use dictionaries in MySQL, because eventually this will be a platform with several Dovecot and Postfix servers. At this time I'm only running one Dovecot installation and a few Postfix servers (two for communication with the outside world and one to do the virus and spam scanning). My current setup for user quota is how Postfixadmin wants it: MariaDB [postfixadmin]> desc quota2; +----------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------+--------------+------+-----+---------+-------+ | username | varchar(100) | NO | PRI | NULL | | | bytes | bigint(20) | NO | | 0 | | | messages | int(11) | NO | | 0 | | +----------+--------------+------+-----+---------+-------+ 3 rows in set (0.001 sec) In /etc/dovecot/conf.d/90-quota.conf I have this: plugin { quota = dict:User quota::proxy::sqlquota quota_rule = *:bytes=1024M quota_rule2 = Trash:bytes=+100M quota_vsizes = yes quota_status_success = DUNNO quota_status_nouser = DUNNO quota_status_overquota = "552 5.2.2 Mailbox is full" } dict { sqlquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } The SQL-configuration /etc/dovecot/dovecot-dict-sql.conf.ext is this: connect = host=... dbname=... user=... password=... map { pattern = priv/quota/storage table = quota2 username_field = username value_field = bytes } map { pattern = priv/quota/messages table = quota2 username_field = username value_field = messages } map { pattern = shared/expire/$user/$mailbox table = expires value_field = expire_stamp fields { username = $user mailbox = $mailbox } } I use LMTP to accept mail from Postfix; the quota-plugin is activated for LMTP, so every incoming mail should be counted. This works like a charm: if I don't configure a quota for a user, he gets the default 1GB, if I override it in Postfixadmin, then that's what he gets. I'm running quota-status on a TCP-port, so the gateway SMTP-servers can connect to Dovecot for a quotacheck to decide whether to accept or reject an incoming message. Again, this works flawlessly. I can't find any serious documentation about this mapping thing. In particular, what's with that "pattern"? All I can find in the documentation is: "The dict key must match exactly priv/quota/storage. The dict keys are hardcoded in the Dovecot code, so depending on what functionality you’re configuring you need to know the available dict keys used it." -- https://doc.dovecot.org/configuration_manual/dict/#dict-sql If anyone can point me at better documentation than the actual source code: please! I browsed through the quota-plugin source code, but I'm not a programmer and couldn't find what I thought I was looking for. That said, I'm not sure where I got the third "map" from, with the shared/expire pattern. I seem to have forgotten to document that bit of my journey. Now, domain quotas... I've tried all kinds of stuff, but at the moment I'm stuck with something that seems to almost work. I added a second quota root: plugin { quota2 = dict:Domain quota:%d:proxy::sqldomainquota quota2_rule = *:bytes=1024M quota2_status_success = DUNNO quota2_status_nouser = DUNNO quota2_status_overquota = "552 5.2.2 Domain quota exceeded" quota2_vsizes = yes } dict { sqldomainquota = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } This dict refers to the same mapping as the one for user quotas, and I think that's the way it should be. Please correct me if I'm wrong. This creates a new user in the quota2 table, by the name of just the domain. Unfortunately, it simply fills it with the numbers from the first user it can find in that domain, not all users in that domain combined. What I think I should do, is change something in the dict so that it sums up all users in that domain, something like this: SELECT SUM(bytes) FROM quota2 WHERE username LIKE '%@domain'; Problem is that I can't find anything useful online with regards to this, I'm not even sure if I'm thinking in the right direction here. Any hints, suggestions or corrections? Or pointers to articles or documentation I might have missed? Kind regards, Hans

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Re: Dead links at https://wiki.dovecot.org/Migration/MailFormat
by Joseph Tam 10 Sep '22

10 Sep '22

> These links: > > http://dag.wieers.com/rpm/packages/pine/pine-4.64-3.el4.rf.i386.rpm > http://staff.washington.edu/chappa/pine/info/maildir.html > > on this page > > https://wiki.dovecot.org/Migration/MailFormat > > at the Dovecot wiki do not lead to useful results. I lost the context of this thread, but if you're looking for mailutil or the older pine stuff, the project has forked inti alpine and you can find the source tarball at https://alpineapp.email/ Joseph Tam <jtam.home(a)gmail.com>

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Old-stats plugin and fifo_listener permissions
by Grant Keller 10 Sep '22

10 Sep '22

Hello, Currently working on using the old-stats plugin in dovecot version 2.3.10.1. What file permissions are recommended for the old-stats-mail and old-stats-user sockets? I was seeing a lack of data from the doveadm oldstats dump command until I adjusted the default config to the following: service old-stats { fifo_listener old-stats-mail { group = mode = 0666 user = root } fifo_listener old-stats-user { group = mode = 0666 user = } } Not totally clear on which processes need read or write on those so any advice is appreciated.

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Managesieve not working
by Francis Augusto Medeiros-Logeay 09 Sep '22

09 Sep '22

Hi, I am running dovecot 2.3.7.2 on ubuntu, and have a replication setup. I noticed that managesieve doesn't seem to be working. On my backup MX, doing a telnet to 4190 gets me the proper greetings, but doing the same on my main server just gave me the normal telnet "Escape character is..." I get the following info on the server: root@d0ba5bb19b6b:/# doveadm service status managesieve name: managesieve process_count: 0 process_avail: 0 process_limit: 1024 client_limit: 1 throttle_secs: 0 exit_failure_last: 0 exit_failures_in_sec: 0 last_drop_warning: 0 listen_pending: n listening: y doveadm_stop: n But when attempting to connect, it doesn't work. Any advice? Best, Francis

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Dead links at https://wiki.dovecot.org/Migration/MailFormat
by kjohnson＠eclypse.org 09 Sep '22

09 Sep '22

Hi, These links: http://dag.wieers.com/rpm/packages/pine/pine-4.64-3.el4.rf.i386.rpm http://staff.washington.edu/chappa/pine/info/maildir.html on this page https://wiki.dovecot.org/Migration/MailFormat at the Dovecot wiki do not lead to useful results. The dag.wieers.com link seems to redirect to a server at packages.sw.be that does not exist (or does not answer today). Not archived at Wayback Machine as far as I can tell. The washington.edu link returns a 404. This page does appear to be archived by the Wayback Machine, but many of the captures reported by the Wayback Machine actually return no results. I have not checked every capture. I did find a capture from 4 Oct 2008 that does have content. This is the link to that capture. https://web.archive.org/web/20081004145454/http://staff.washington.edu/chap… Perhaps someone who attends to the Dovecot Wiki will find this information helpful in updating that page in a useful way. Regards, Ken

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