- dovecot - dovecot.org

Re: keent() from Tika - with doveadm
by Aki Tuomi 25 Oct '16

25 Oct '16

Hi, can you run doveadm in gdb, wait for it to crash, and then go to frame 6 ( io_loop_handler_run_internal) and run p errno p ret p *ioloop p *ctx p *events Sorry but the crash doesn't make enough sense yet to me, we need to determine what the invalid parameter is. > Larry Rosenman http://www.lerctr.org/~ler > Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com > US Mail: 17716 Limpia Crk, Round Rock, TX 78664-7281

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Break up massive INBOX?
by mrobti＠insiberia.net 25 Oct '16

25 Oct '16

I have inherited a 10+ GB mailbox which dsync converted to maildir very nicely. But 15GB in tens of thousands of messages is too much in one INBOX when used in webmail. I guess it's best to divide the messages into subfolders for date. Is there a server-side way to safely move messages into new subfolders so that Dovecot indexes and UIDs won't break? If I write a shell script to move maildir files based on date of the files, I think Dovecot would not like this? Also, is there any way to automatically create delivery or archive folders by date eg., on the 1st of each month? And deliver mails to the subfolder for the current month? I know I can create Sieve rules for such by hand, but prefer if there is a plugin or something to do this automatically.

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ssl_options missing no_ticket documentation in example config
by Christopher Head 25 Oct '16

25 Oct '16

Hello! I have a very minor bug to report. The ssl_options configuration directive takes a space-separated list of options, each of which must be in the set {“no_compression”, “no_ticket”}, according to the 2.2.25 source code. However, the file doc/example-config/conf.d/10-ssl.conf shipped in the tarball only mentions the “no_compression” option; it makes no mention of the “no_ticket” option. Oh, and by the way, the changelog <http://dovecot.org/doc/NEWS> linked from the download page is missing information for anything newer than 2.2.21. Please include me in replies; I am not subscribed to the list. -- Christopher Head

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Hierarchy separator and LAYOUT=FS change
by Simeon Ott 25 Oct '16

25 Oct '16

Hello, I stumbled across a 5-year-old post on the dovecot list about changing the dovecot hierarchy separator to enable shared mailboxes (http://www.dovecot.org/list/dovecot/2011-January/056201.html <http://www.dovecot.org/list/dovecot/2011-January/056201.html>). At the moment I’m stuck in a pretty similar situation. Migrated from courier to dovecot 2 years ago and preserved the dot-separator. Because I’m using the e-mail adress as a username, the dots for folder separation and the dots in the email adresses getting messed up - I do have a pretty small mailserver with about 150 accounts. The Maildir filestructur of a typical mail account looks like this: drwx------ 2 vmail vmail 4096 Oct 10 20:02 cur drwx------ 5 vmail vmail 4096 Oct 3 07:48 .Daten.Administration drwx------ 5 vmail vmail 4096 Oct 3 09:51 .Daten.Anfragen, Werbung drwx------ 5 vmail vmail 4096 Oct 3 08:02 .Daten drwx------ 5 vmail vmail 4096 Oct 6 09:57 .Daten.Intern drwx------ 5 vmail vmail 4096 Oct 3 08:03 .Daten.Intern.Fahrzeuge drwx------ 5 vmail vmail 4096 Oct 6 12:57 .Daten.Intern.Infos, FileMaker etc drwx------ 5 vmail vmail 4096 Oct 3 09:19 .Daten.Intern.Sonstiges drwx------ 5 vmail vmail 4096 Oct 3 07:47 .Daten.Kunden drwx------ 5 vmail vmail 4096 Sep 16 08:29 .Daten.Lieferanten drwx------ 5 vmail vmail 4096 Oct 3 08:28 .Daten.Marketing drwx------ 2 vmail vmail 4096 Oct 10 20:02 new drwx------ 5 vmail vmail 4096 Oct 10 18:00 .Sent drwx------ 5 vmail vmail 4096 Oct 10 18:00 .Spam drwx------ 5 vmail vmail 4096 Oct 10 18:00 .Trash When changing the separator in my inbox namespace the documentation mentions that the filestructur doesn’t change. This means I will get the same problems when using shared boxes with email adresses as usernames. I definitly need to change to maildir:~/Maildir:LAYOUT=fs When changing to LAYOUT=fs i need to convert all the mailboxes manually, is that correct? Is dsync is the way to go? Or is it better to leave the separator and change to a different username schema (without dots in it) and advise the clients to change their credentials? I know there are people out there who successfully converted this - but I can’f find that many information about this subject. doveconf -n: # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.11 auth_mechanisms = plain login auth_verbose = yes lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = * login_log_format_elements = user=<%u> method=%m rip=%r lip=%l mpid=%e %c mail_gid = 5000 mail_location = maildir:~/Maildir mail_plugins = zlib quota acl mail_uid = 5000 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 ihave namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = INBOX. separator = . } passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/spool/postfix/virtual/shared-mailboxes quota = maildir:User quota quota_exceeded_message = 4.2.2 Mailbox full quota_rule = *:storage=1G quota_rule2 = INBOX.Trash:storage=+100M quota_rule3 = INBOX.Spam:ignore quota_warning = storage=95%% quota-warning 95 %u sieve = ~/.dovecot.sieve sieve_before = /var/lib/dovecot/sieve/default.sieve sieve_dir = ~/sieve sieve_max_actions = 32 sieve_max_redirects = 4 sieve_max_script_size = 1M sieve_quota_max_scripts = 0 sieve_quota_max_storage = 0 } protocols = " imap lmtp sieve pop3" service auth { group = dovecot unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { group = vmail mode = 0660 user = vmail } user = dovecot } service lmtp { unix_listener lmtp { mode = 0666 } } service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } process_min_avail = 1 service_count = 1 vsz_limit = 64 M } ssl_cert = </etc/ssl/private/startssl-onnet.ch <http://startssl-onnet.ch/>-chain.crt ssl_cipher_list = ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA:AES256-SHA:DHE-RSA-CAMELLIA128-SHA:DHE-RSA-CAMELLIA256-SHA:CAMELLIA128-SHA:CAMELLIA256-SHA:ECDHE-RSA-DES-CBC3-SHA:DES-CBC3-SHA:!SSLv2 ssl_key = </etc/ssl/private/startssl-onnet.ch.key userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } protocol lmtp { mail_plugins = zlib quota acl sieve } protocol lda { auth_socket_path = /var/run/dovecot/auth-master deliver_log_format = msgid=%m: %$ mail_plugins = zlib quota acl sieve postmaster_address = postmaster(a)onnet.ch <mailto:postmaster@onnet.ch> } protocol imap { mail_plugins = zlib quota acl imap_quota imap_acl } protocol sieve { info_log_path = /var/log/sieve.log log_path = /var/log/sieve.log mail_max_userip_connections = 10 managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o managesieve_max_compile_errors = 5 managesieve_max_line_length = 65536 } … parts of the ldap config user_attrs = homeDirectory=home=/var/spool/postfix/virtual/%$,uidNumber=uid,gidNumber=gid,quota=quota_rule=*:bytes=%$ user_filter = (&(objectClass=CourierMailAccount)(mail=%u)) … my shared configuration is currently commented out. # namespace { # type = shared # separator = . # prefix = shared.%%u. # location = maildir:%h/Maildir:INDEX=~/Maildir/shared/%%u # subscriptions = yes # list = children #} thanks in advance for any help Sincerely, Simeon - onnet.ch <http://onnet.ch/>

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Re: keent() from Tika - with doveadm
by larryrtx 23 Oct '16

23 Oct '16

Any news Ali? Sent from my Sprint Samsung Galaxy S7. -------- Original message --------From: Larry Rosenman <larryrtx(a)gmail.com> Date: 10/21/16 12:27 PM (GMT-06:00) To: Aki Tuomi <aki.tuomi(a)dovecot.fi> Cc: Dovecot Mailing List <dovecot(a)dovecot.org> Subject: Re: keent() from Tika - with doveadm Unfortuantely it doesn't seem to log that, and it's not 100% consistent. I did catch one, but the log file is huge so it's at: http://www.lerctr.org/~ler/Dovecot/doveadm0-tika On Fri, Oct 21, 2016 at 12:17 PM, Aki Tuomi <aki.tuomi(a)dovecot.fi> wrote: > On October 21, 2016 at 8:06 PM Larry Rosenman <larryrtx(a)gmail.com> wrote: > > > getting the following: > > Oct 21, 2016 12:04:25 PM org.apache.tika.server.resource.TikaResource > logRequest > INFO: tika/ > (application/vnd.openxmlformats-officedocument.wordprocessingml.document) > doveadm(ctr): Debug: http-client: conn 127.0.0.1:9998 [1]: Got 200 response > for request [Req69: PUT http://localhost:9998/tika/] (took 91 ms + 210 ms > in queue) > doveadm(ctr): Panic: kevent(): Invalid argument > Abort trap (core dumped) > > if I turn off tika, I do NOt get it. > > 2.2.26-RC1 > > what else do you need? > > > -- > Larry Rosenman http://www.lerctr.org/~ler > Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com > US Mail: 17716 Limpia Crk, Round Rock, TX 78664-7281 Any hope for exact request? Aki Tuomi Dovecot oy -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com US Mail: 17716 Limpia Crk, Round Rock, TX 78664-7281

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Messed up dovecot mail store, need some repair advice
by Gerben Wierda 23 Oct '16

23 Oct '16

Hello folks, I have an older dovecot 2.0 (which I will migrate to a 2.2 asap, but at this point in time I need a fix). This is a dovecot 2.0 that came with Mac OS X 10.8.5 Server 2.2.5. Today, my spam/virus filtering (clamav) on the Server broke down. As a result, all my meesages got the ***UNCHECKED*** tag added to each subject. That was clearly unacceptable. SO, for the tim ebeing I have set that tag to undef so the tag is no longer added. But I also wanted to repair the messages that already ended up in dovecot 2.0 So, I did something simple: stopped all mail services on the server, went into the dovecot mail store and edited the messages. I first tried with one small ccount and it seemed OK. But now my mail client is experiencing problems with the messages (cannot display) and I think I've been to simplistic. I have for instance notedthat th esizeof the message is part of the filename. So, I can change these of course, but probably I need to change more. Can someone enlighten me how I can repair the broken data store? Thanks, (Foolish) Gerben

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More informations in doveadm proxy ring status
by Peer Heinlein 22 Oct '16

22 Oct '16

I would love to have a) the number of active users b) the number of active TCP sessions (pop3, imap, lmtp, sieve, doveadm) included in the output of "doveadm director ring status". This would be helpful to get a good overview over load and usage of the whole director ring and would help to plan downtimes and maintenance work. Peer -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-42 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

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MFA 2FA TOTP razz-ma-tazz!
by WJCarpenter 22 Oct '16

22 Oct '16

I'd like to start offering my server's users multi-factor authentication. Right now, I funnel all authentication through dovecot. Before I get too far down the fantasy design path, I'm wondering if anyone else has already done this and could share some details or code. (I loaded up the subject line with acronyms to show how serious I am. :-)) I am specifically thinking of two-factor authentication using TOTP (time-based one-time passwords) as described in RFC-6238. Those are the ones compatible with Google Authenticator and compatible apps. I already am a user of those at several sites. Some of them don't have a separate opportunity to enter the 6-digit code. Instead, you append the 6-digit code to your normal password. If your config on the site shows you as a user of TOTP, they peel those trailing 6 digits off your password and then validate the rest of the password in the normal way. That is what I think I would do for dovecot authentication. So, who's already done this or something like it?

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Dovecot does not close connections
by Benedikt Carda 22 Oct '16

22 Oct '16

Hello, I am running into this error: /Maximum number of connections from user+IP exceeded (mail_max_userip_connections=10)/ The suggested solution in hundreds of support requests on this mailing list and throughout the internet is to increase the number of maximum userip connections. But this is not curing the problem, it is just postponing it to the moment when the new limit is reached. When i type: /doveadm who// / I can see that some accounts have several pids running: /someaccount 10 imap (25396 25391 25386 25381 25374 7822 7817 5559 5543 5531) (xxx.xxx.xxx.xxx)/ Now when I check these pids with /ps aux/ I find out that the oldest pid (5531) has a lifetime of already over 12 hours. Anyway I know that the clients that initiated the connections are not connected anymore, so there is no way that there is a valid reason why this connection should still be open. Also I never had this problem before, it appeared some months ago. Does anybody know how to solve this? Thanks in advance, Benedikt.

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keent() from Tika - with doveadm
by Larry Rosenman 21 Oct '16

21 Oct '16

getting the following: Oct 21, 2016 12:04:25 PM org.apache.tika.server.resource.TikaResource logRequest INFO: tika/ (application/vnd.openxmlformats-officedocument.wordprocessingml.document) doveadm(ctr): Debug: http-client: conn 127.0.0.1:9998 [1]: Got 200 response for request [Req69: PUT http://localhost:9998/tika/] (took 91 ms + 210 ms in queue) doveadm(ctr): Panic: kevent(): Invalid argument Abort trap (core dumped) if I turn off tika, I do NOt get it. 2.2.26-RC1 what else do you need? -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: larryrtx(a)gmail.com US Mail: 17716 Limpia Crk, Round Rock, TX 78664-7281

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Released Pigeonhole v0.4.16.rc1 for Dovecot v2.2.26.rc1.
by Stephan Bosch 21 Oct '16

21 Oct '16

Hello Dovecot users, The upcoming release includes quite a few new features for a change. The most important ones are the Sieve discard-script feature and the new vnd.dovecot.config environment items. Documentation for these features can be found in the package itself. Please test these thoroughly. Changelog v0.4.16: * Part of the Sieve extprograms implementation was moved to Dovecot, which means that this release depends on Dovecot v2.2.26+. * ManageSieve: The PUTSCRIPT command now allows uploading empty Sieve scripts. There was really no good reason to disallow doing that. + Sieve vnd.dovecot.report extension: + Added a Dovecot-Reporting-User field to the report body, which contains the e-mail address of the user sending the report. + Added support for configuring the "From:" address used in the report. + LDA sieve plugin: Implemented support for a "discard script" that is run when the message is going to be discarded. This allows doing something other than throwing the message away for good. + Sieve vnd.dovecot.environment extension: Added vnd.dovecot.config.* environment items. These environment items map to sieve_env_* settings from the plugin {} section in the configuration. Such values can of course also be returned from userdb. + Sieve vacation extension: Use the Microsoft X-Auto-Response-Suppress header to prevent unwanted responses from and to (older) Microsoft products. + ManageSieve: Added rawlog_dir setting to store ManageSieve traffic logs. This replaces at least partially the rawlog plugin (mimics similar IMAP/POP3 change). - doveadm sieve plugin: synchronization: Prevent setting file timestamps to unix epoch time. This occurred when Dovecot passed the timestamp as 'unknown' during synchronization. - Sieve exprograms plugin: Fixed spurious '+' sometimes returned at the end of socket-based program output. - imapsieve plugin: Fixed crash occurring in specific situations. - Performed various fixes based on static analysis and Clang warnings. The release is available as follows: http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.16… http://pigeonhole.dovecot.org/releases/2.2/rc/dovecot-2.2-pigeonhole-0.4.16… Refer to http://pigeonhole.dovecot.org and the Dovecot v2.x wiki for more information. Have fun testing this release candidate and don't hesitate to notify me when there are any problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl

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v2.2.26 release candidate released
by Timo Sirainen 21 Oct '16

21 Oct '16

http://dovecot.org/releases/2.2/rc/dovecot-2.2.26.rc1.tar.gz http://dovecot.org/releases/2.2/rc/dovecot-2.2.26.rc1.tar.gz.sig There are quite a lot of changes since v2.2.25. Please try out this RC so we can get a good and stable v2.2.26 out. * master: Removed hardcoded 511 backlog limit for listen(). The kernel should limit this as needed. * doveadm import: Source user is now initialized the same as target user. Added -U parameter to override the source user. * Mailbox names are no longer limited to 16 hierarchy levels. We'll check another way to make sure mailbox names can't grow larger than 4096 bytes. + Added a concept of "alternative usernames" by returning user_* extra field(s) in passdb. doveadm proxy list shows these alt usernames in "doveadm proxy list" output. "doveadm director&proxy kick" adds -f <passdb field> parameter. The alt usernames don't have to be unique, so this allows creation of user groups and kicking them in one command. + auth: passdb/userdb dict allows now %variables in key settings. + auth: If passdb returns noauthenticate=yes extra field, assume that it only set extra fields and authentication wasn't actually performed. + auth: passdb static now supports password={scheme} prefix. + imapc: Added imapc_max_line_length to limit maximum memory usage. + imap, pop3: Added rawlog_dir setting to store IMAP/POP3 traffic logs. This replaces at least partially the rawlog plugin. + dsync: Added dsync_features=empty-header-workaround setting. This makes incremental dsyncs work better for servers that randomly return empty headers for mails. When an empty header is seen for an existing mail, dsync assumes that it matches the local mail. + doveadm sync/backup: Added -I <max size> parameter to skip too large mails. + doveadm sync/backup: Fixed -t parameter and added -e for "end date". + doveadm mailbox metadata: Added -s parameter to allow accessing server metadata by using empty mailbox name. - master process's listener socket was leaked to all child processes. This might have allowed untrusted processes to capture and prevent "doveadm service stop" comands from working. - auth: userdb fields weren't passed to auth-workers, so %{userdb:*} from previous userdbs didn't work there. - auth: Each userdb lookup from cache reset its TTL. - auth: Fixed auth_bind=yes + sasl_bind=yes to work together - auth: Blocking userdb lookups reset extra fields set by previous userdbs. - auth: Cache keys didn't include %{passdb:*} and %{userdb:*} - auth-policy: Fixed crash due to using already-freed memory if policy lookup takes longer than auth request exists. - lib-auth: Unescape passdb/userdb extra fields. Mainly affected returning extra fields with LFs or TABs. - lmtp_user_concurrency_limit>0 setting was logging unnecessary anvil errors. - lmtp_user_concurrency_limit is now checked before quota check with lmtp_rcpt_check_quota=yes to avoid unnecessary quota work. - lmtp: %{userdb:*} variables didn't work in mail_log_prefix - autoexpunge settings for mailboxes with wildcards didn't work when namespace prefix was non-empty. - Fixed writing >2GB to iostream-temp files (used by fs-compress, fs-metawrap, doveadm-http) - director: Ignore duplicates in director_servers setting. - zlib, IMAP BINARY: Fixed internal caching when accessing multiple newly created mails. They all had UID=0 and the next mail could have wrongly used the previously cached mail. - doveadm stats reset wasn't reseting all the stats. - auth_stats=yes: Don't update num_logins, since it doubles them when using with mail stats. - quota count: Fixed deadlocks when updating vsize header. - dict-quota: Fixed crashes happening due to memory corruption. - dict proxy: Fixed various timeout-related bugs. - doveadm proxying: Fixed -A and -u wildcard handling. - doveadm proxying: Fixed hangs and bugs related to printing. - imap: Fixed wrongly triggering assert-crash in client_check_command_hangs. - imap proxy: Don't send ID command pipelined with nopipelining=yes - imap-hibernate: Don't execute quota_over_script or last_login after un-hibernation. - imap-hibernate: Don't un-hibernate if client sends DONE+IDLE in one IP packet. - imap-hibernate: Fixed various failures when un-hibernating. - fts: fts_autoindex=yes was broken in 2.2.25 unless fts_autoindex_exclude settings existed. - fts-solr: Fixed searching multiple mailboxes (patch by x16a0) - doveadm fetch body.snippet wasn't working in 2.2.25. Also fixed a crash with certain emails. - pop3-migration + dbox: Various fixes related to POP3 UIDL optimization in 2.2.25. - pop3-migration: Fixed "truncated email header" workaround.

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Migrating users from a 2.0.19 to a 2.2.24 installation
by Gerben Wierda 21 Oct '16

21 Oct '16

Hello, I am currently still running an older dovecot (2.0.19apple1 on Mac OS X 10.8.5) and I want to migrate my users to a new server (macOS 10.12 with Server 5, which contains dovecot 2.2.24 (a82c823)). Basically, I want to create a new server installation on the new server so I don't bring any junk over (new user accounts, with the same uid/gid (still need to figure that one out), but after I have done that I need to move the data over from the old instalation to the new. Has anything changed in the formats between 2.0 and 2.2 that will stop me from doing this? Thanks, G

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Extending IMAP daemon to comply with legacy Proxy
by Thorsten Hater 21 Oct '16

21 Oct '16

Hello, I am currently investigating if and how to migrate a legacy setup based on a modified Courier installation to Dovecot. So far I am really liking Dovecot. however, I will have to work with an existing IMAP proxy for the time being. In particular, the proxy authenticates the user and looks up the location of the mail directory and transfers the data to the actual server via an extension of the IMAP protocol. This extension will have to stay and the information transferred is not easily recoverable. Further database lookups on the real server would be possible to solve the issue, but I would prefer to keep the design intact at least for now. Is it possible to handle IMAP commands after LOGIN/AUTHENTICATE but before opening any mailboxes? Basically these commands aim to replace the userdb lookup. Any pointers on how to implement this, perhaps as a plugin? Best regards, Thorsten

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sieve duplicate locking
by Alexander 'Leo' Bergolth 20 Oct '16

20 Oct '16

Hi! Does the duplicate sieve plugin do any locking to avoid duplicate parallel delivery of the same message? I sometimes experience duplicate mail delivery of messages with the same message-id, despite the use of a sieve duplicate filter. According to the log files, those messages are delivered in the same second by two parallel dovecot-lda processes. (Duplicate filtering works fine in all other cases.) RFC7352 states that the ID of a message may only be committed to the duplicate tracking list at the _end_ of a successful script execution, which may lead to race conditions. Maybe I am running into this? Is there an easy way to serialize mail delivery using some locking inside sieve? Or do I have to serialize per-user dovecot-lda delivery? Any experiences with that? I am using dovecot-2.2.25 and pidgeonhole-0.4.15. Mail is delivered using postfix-2.10 and dovecot-lda as mailbox_command. Mailbox format is maildir with LAYOUT=fs. Cheers, --leo -- e-mail ::: Leo.Bergolth (at) wu.ac.at fax ::: +43-1-31336-906050 location ::: IT-Services | Vienna University of Economics | Austria

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Re: Massive LMTP Problems with dovecot
by Ralf Hildebrandt 20 Oct '16

20 Oct '16

> We'll need the `dovecot -n` output first. Here we go: > # 2.2.devel (933d16f): /etc/dovecot/dovecot.conf > # Pigeonhole version 0.4.devel (63f9b42) > # OS: Linux 3.13.0-98-generic x86_64 Ubuntu 14.04.5 LTS > default_vsz_limit = 2 G > lmtp_user_concurrency_limit = 10000 > mail_attachment_dir = /home/copymail/attachments > 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_autoindex = yes > fts_languages = de,en > fts_lucene = whitespace_chars=@. > sieve = file:~/sieve;active=~/.dovecot.sieve > zlib_save = gz > zlib_save_level = 5 > } > 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 = 141.42.1.208 > port = 1025 > } > 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_key = # hidden, use -P to show it > ssl_prefer_server_ciphers = yes > ssl_protocols = !SSLv2 !SSLv3 > 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 | http://www.charite.de

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Lmtp Fatal Error
by Sven Roellig 19 Oct '16

19 Oct '16

Hi,dovecot is create an Fatal Panik Error. <AM5DMwaCBlgpDQAAWm89Cw>: Fatal: master: service(lmtp): child 3369 killed with signal 6 (core dumps disabled) <1jx3DhuCBlg1DQAAWm89Cw>: Panic: file lda-sieve-plugin.c: line 447 (lda_sieve_execute_scripts): assertion failed: (script != NULL) <1jx3DhuCBlg1DQAAWm89Cw>: Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x93fae) [0x7f547f6a3fae] -> /usr/lib/dovecot/libdovecot.so.0(+0x9409c) [0x7f547f6a409c] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f547f63d56e] -> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3ae8) [0x7f547d765ae8] -> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x49) [0x7f547fc709a9] -> dovecot/lmtp(+0x7201) [0x7f54800a1201] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5f) [0x7f547f6b88bf] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x10a) [0x7f547f6b9d8a] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7f547f6b8965] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x30) [0x7f547f6b8b00] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f547f643ac3] -> dovecot/lmtp(main+0x1c9) [0x7f548009f2c9] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f547f286b45] -> dovecot/lmtp(+0x53ae) [0x7f548009f3ae] Normal Mails are not deliverd but filterd mails are deliverd. System is Debian 8.6 Dovecot Core is 2%3a2.3.0-alpha0-1-auto+385 AMD64 can anyone help. Sven

3 4

Iteration base for LDAP
by Taso N. Devetzis 19 Oct '16

19 Oct '16

Greetings, The iteration machinery uses the LDAP search base set with the "base" directive (typically from dovecot-ldap.conf.ext); the same base used during nominal operations (e.g., passdb/userdb searches). Consider a directory: dc=ROOT |_ dc=foo,dc=com,dc=ROOT (foo.com subtree) |_ dc=bar,dc=net,dc=ROOT (bar.net subtree) A search base setting appropriate for mail operations might be: base = dc=%Dd,dc=ROOT # e.g. dc=foo,dc=com,dc=ROOT for user(a)foo.com This fails when iterating, as the variable substitution is meaningless in this context (and even a static subtree search base would only cover a portion of the overall directory during iterative searches). Setting the base to "dc=ROOT" obviously solves the issue at the expense of searching the entire directory for all operations. This is less than optimal. I could not find a way to override this setting at runtime via a doveadm option or similar. Ideally, a separate "iterate_base" setting would solve this issue. Any other solutions? Thanks, /taso

1 0

RE: First steps in Dovecot; IMAP not working
by Joseph Tam 19 Oct '16

19 Oct '16

> > doveadm user mailtest > field value > uid 1002 > gid 8 > home /home/mailtest > mail mbox:~/mail:INBOX=/var/mail/mailtest > system_groups_user mailtest Looks fine. > [log files] I'll try to locate them. Your best hope. Maybe this helps doveconf -n | grep log_ Or just force it somewhere by settings the *log_path configuration values. Also your mail server's log when trying to deliver. Joseph Tam <jtam.home(a)gmail.com>

1 0

Dict proxy client returning empty string instead of multiline string
by Pierre Jaury 18 Oct '16

18 Oct '16

Hello, I am using a dict proxy for my sieve extdata plugin to access some fields from an SQLite database (autoreply text and other database-configured items). All tests are performed against version 2.2.25. $ dovecot --version 2.2.25 (7be1766) My configuration looks like: dict { sieve = sqlite:/etc/dovecot/pigeonhole-sieve.dict } [...] sieve_extdata_dict_uri = proxy::sieve I am able to read pretty much any attribute without any issue, except when the value contains a special character like "\r" or "\n". By using the doveadm dict client, I narrowed it down to the dictionary management part (either server, protocol or client). I was suspecting escaping functions from "lib/strescape.c" (mostly str_tabescape and its counterpart, used by "lib-dict/client.c"), so I monitored socket communications. It seems that escaping is done properly on the server and the socket is not an issue either. The following strace dump results from running "doveadm dict get" against the dict socket: connect(8, {sa_family=AF_UNIX, sun_path="..."}, 110) = 0 fstat(8, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0 [...] write(8, "H2\t0\t0\tadmin(a)domain.tld\tsieve\n", 30) = 30 [...] read(8, "Otest\1r\1ntest\n", 8192) = 14 Indeed "\1r" and "\1n" are the escape sequences used by "lib/strescape.c". I went deeped and debugged the call to "dict_lookup" performed by doveadm. Indeed the client gets the proper string from the socket and to my surprise, it is properly unescaped. Then, in "client_dict_lookup" ("lib-dict/dict-client.c"), the call to "p_strdup" returns an empty string (null byte set at the target address). Before the call to the dict "->lookup" attribute (client_dict_lookup): RAX: 0x7ffff73a37c0 (push r14) RBX: 0x6831b8 ("priv/reply_body") RCX: 0x7fffffffe240 --> 0x682a60 --> 0x6831b8 ("priv/reply_body") RDX: 0x6831b8 ("priv/reply_body") RSI: 0x683288 --> 0x7ffff7653120 --> 0x7ffff73ea620 ([...]) RDI: 0x690ad0 --> 0x7ffff7400713 --> 0x75250079786f7270 ('proxy') 0x7ffff73a1f10 <dict_lookup+32>: mov rcx,r11 (value_r) 0x7ffff73a1f13 <dict_lookup+35>: mov rdx,r8 (key) 0x7ffff73a1f16 <dict_lookup+38>: mov rsi,r10 (pool) 0x7ffff73a1f19 <dict_lookup+41>: mov rdi,r9 (dict) 0x7ffff73a1f1c <dict_lookup+44>: add rsp,0x8 => 0x7ffff73a1f20 <dict_lookup+48>: jmp rax Before the call to p_strdup in "client_dict_lookup": RSI: 0x6832d8 ("test\r\ntest") (lookup.result.value) RDI: 0x683288 --> 0x7ffff7653120 --> [...] (pool) RAX: 0x0 (result) 0x7ffff73a384f: nop 0x7ffff73a3850: mov rsi,QWORD PTR [rsp+0x8] 0x7ffff73a3855: mov rdi,r14 => 0x7ffff73a3858: call 0x7ffff736d3c0 <p_strdup@plt> 0x7ffff73a385d: mov QWORD PTR [r13+0x0],rax 0x7ffff73a3861: mov rsi,QWORD PTR [rsp+0x18] 0x7ffff73a3866: xor rsi,QWORD PTR fs:0x28 0x7ffff73a386f: mov eax,ebx After the call: 0x7ffff73a3850: mov rsi,QWORD PTR [rsp+0x8] 0x7ffff73a3855: mov rdi,r14 0x7ffff73a3858: call 0x7ffff736d3c0 <p_strdup@plt> => 0x7ffff73a385d: mov QWORD PTR [r13+0x0],rax 0x7ffff73a3861: mov rsi,QWORD PTR [rsp+0x18] 0x7ffff73a3866: xor rsi,QWORD PTR fs:0x28 0x7ffff73a386f: mov eax,ebx 0x7ffff73a3871: jne 0x7ffff73a38da RSI: 0x0 RDI: 0x6832d8 --> 0x0 RAX: 0x6832d8 --> 0x0 (result) It is worth noting that I can reproduce the exact same execution flow with a non-multiline result string (lookup.result.value) that is properly copied by "p_strdup" and returned in RAX, then displayed by doveadm. I am not familiar with the pooling mechanism hidden behind the call to p_strdump and not quite sure why this behaviour is emerging. Maybe I am even miles away from an understanding of the issue here, but it sounds to me like something is wrong in the way "p_strdup" performs the copy. Hope this helps, kaiyou.

2 11

Re: First steps in Dovecot; IMAP not working
by Joseph Tam 18 Oct '16

18 Oct '16

Marnaud <anic297(a)mac.com> writes: > "mailtest", the new user, is in group mail(8). In addition, I've added > write permission for "others" to /var/mail. Now, I'm trying to send a > message to "mailtest" from another, working, e-mail account and nothing > happens. This time, "doveadm log errors" is empty. > > In short, I don't get any error but no mail either. Two things to check: # What does dovecot think user "mailtest" has? doveadm user mailtest # The sticky bit should be set on /var/mail (you didn't mention # setting it. It probably doesn't have bearing on this problem, # but it will make it a little more secure. chmod 1777 /var/mail > Since "doveadm log errors" returns an empty result, where should I look > for the problem? I usually don't use this command, I look at the log file which seems to have more details. Try looking there for more diagnostics. Also, look at your MTA's logs as well. Joseph Tam <jtam.home(a)gmail.com>

4 4

Warning: Sent SIGKILL to 100 imap-login processes
by Ximo Mira 18 Oct '16

18 Oct '16

Hi, Last night we tried a traffic bypass in an existing mail environment before migration to new Dovecot backend platfom using Dovecot proxy. We are using an LDAP value for checking the proxy host of the user. POP traffic was running flawlessly, but IMAP connections started to drop when few clients connected: Oct 17 22 :26:51 master: Warning: Sent SIGKILL to 100 imap-login processes There are hundreds of these lines, always between 99 and 100 processes. Looks like some kind of limit, but not sure if its related to the Dovecot proxy machines (pool of 3 in total) or the final destination (the same IMAP server for +10000 users). Concurrect IMAP connections may rise to around 2000. Thanks.

2 1

dovecot 2.2.25 BUG: local_name is not matching correctly
by Arkadiusz Miśkiewicz 18 Oct '16

18 Oct '16

Bug report: When using dovecot 2.2.25 SNI capability it doesn't always match proper vhost config. For example if we have such config: local_name imap.example.com { ssl_cert = </etc/certs/cert.imap.example.com.pem ssl_key = </etc/certs/cert.imap.example.com.pem } but imap client sends mixedcase SNI hostname like "IMAP.example.com" then dovecot won't match above local_name imap.example.coml config section. IMO dovecot should do case insensitive comparison. Case sensitive matching for DNS names makes little sense. -- Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )

2 2

Massive LMTP Problems with dovecot
by Ralf Hildebrandt 17 Oct '16

17 Oct '16

Currently I'm having massive problems with LMTP delivery into dovcot. dovecot/lmtp processes are piling up, eas using considerable amounts of CPU: # ps auxwww|fgrep dove root 20537 0.0 0.0 18124 1196 ? Ss 15:18 0:00 /usr/sbin/dovecot -c /etc/dovecot/dovecot.conf dovecot 20541 0.0 0.0 9620 1084 ? S 15:18 0:00 dovecot/anvil root 20542 0.0 0.0 9752 1264 ? S 15:18 0:00 dovecot/log root 20544 0.0 0.0 21168 2276 ? S 15:18 0:00 dovecot/config copymail 20580 72.8 0.0 39556 7036 ? R 15:18 2:00 dovecot/lmtp dovecot 20582 0.0 0.0 18568 1756 ? S 15:18 0:00 dovecot/auth copymail 20597 77.2 0.0 35688 5136 ? R 15:18 2:06 dovecot/lmtp copymail 20598 39.3 0.0 38060 5596 ? R 15:18 1:04 dovecot/lmtp copymail 20613 62.3 0.0 38036 5600 ? R 15:18 1:41 dovecot/lmtp copymail 20619 56.4 0.0 37732 7448 ? R 15:18 1:31 dovecot/lmtp copymail 20620 75.9 0.0 35872 5336 ? R 15:18 2:03 dovecot/lmtp copymail 20627 37.8 0.0 36480 5892 ? R 15:18 1:01 dovecot/lmtp copymail 20838 60.5 0.0 35640 5036 ? R 15:19 0:59 dovecot/lmtp copymail 20840 66.3 0.0 35920 5296 ? R 15:19 1:04 dovecot/lmtp copymail 20841 66.0 0.0 37456 6852 ? R 15:19 1:04 dovecot/lmtp copymail 20842 64.5 0.0 36424 5808 ? R 15:19 1:02 dovecot/lmtp copymail 20843 67.6 0.0 39612 7064 ? R 15:19 1:05 dovecot/lmtp doveadm stop won't stop these, I have to use kill -9 on them. I already tried disabling fts (entirely), still things won't speed up. I can't strace: # strace -p 20841 Process 20841 attached (and that's it) # dpkg -l|grep dovecot ii dovecot-core 2:2.2.25-1~auto+57 amd64 secure POP3/IMAP server - core files ii dovecot-imapd 2:2.2.25-1~auto+57 amd64 secure POP3/IMAP server - IMAP daemon ii dovecot-lmtpd 2:2.2.25-1~auto+57 amd64 secure POP3/IMAP server - LMTP server ii dovecot-lucene 2:2.2.25-1~auto+57 amd64 secure POP3/IMAP server - Lucene support ii dovecot-sieve 2:2.2.25-1~auto+57 amd64 secure POP3/IMAP server - Sieve filters support I also tried deleting the mdboxes, that also didn't change anything. Ideas? -- 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 | http://www.charite.de

2 1

Re: First steps in Dovecot; IMAP not working
by Marnaud 17 Oct '16

17 Oct '16

Sorry, my previous message got mangled. I'm re-writing it, quoting manually. I apologize for the traffic. >(Sorry I read this list in digest form so frequently I'm half a step behind.) No problem. >No, it's quite explicit. User "webuser" has uid/gid = 1001(webuser)/1000(ftpusers). Your mail spool has permission uid/gid = root(0)/mail(8), neither of which allows webuser to write to this mail spool to creates its own mail folder. You're right (I don't have enough Unix habits, it seems...). I couldn't change this user (it must be in the ftpusers group for other purposes), so I tried adding another user for testing mail. "mailtest", the new user, is in group mail(8). In addition, I've added write permission for "others" to /var/mail. Now, I'm trying to send a message to "mailtest" from another, working, e-mail account and nothing happens. This time, "doveadm log errors" is empty. In short, I don't get any error but no mail either. >Aki Tuomi <aki.tuomi(a)dovecot.fi> replies with several solutions: >>In your configuration, dovecot uses whatever user/group returned by PAM. Since the webuser has never logged in, it has no directory under /var/mail. If you want, you can >>a) override mail_uid and mail_gid in userdb/passdb >>b) pre-create /var/mail/webuser and chown it to webuser:ftpusers >>c) you can let ftpusers write to /var/mail. Ok, I thought I had to do all of them (and didn't understand step a)). So I've done step c) by allowing everyone write access. >Or if you dynamically/frequently onboard mail accounts, and users cannot arbitrarily write into this directory, you can "chmod 1777 /var/mail/" and let dovecot auto-create it (might also want to set "lda_mailbox_autocreate = yes". I've done it right now; same problem. Since "doveadm log errors" returns an empty result, where should I look for the problem? Thank you.

1 0

Re: First steps in Dovecot; IMAP not working
by Joseph Tam 17 Oct '16

17 Oct '16

(Sorry I read this list in digest form so frequently I'm half a step behind.) > For sake of ?security?, I chose to not allow plaintext communication > (being new to this, I think being strict is a good choice). I?ve tried > with the openssl option and it successfully logged in. Yes, you've included some more log entries, which makes the problem clearer, as it usually does. > Oct 13 05:56:28 imap(webuser): Error: open(/var/mail/webuser) failed: > Permission denied (euid=1001(webuser) egid=1000(ftpusers) missing +w perm: > /var/mail, we're not in group 8(mail), dir owned by 0:8 mode=0775) > ... > I checked, using ls -l /var, and I get this: > drwxrwsr-x 2 root mail 4096 Apr 27 11:27 mail > so the group looks to be correctly set to 'mail', despite what the log says, > right? No, it's quite explicit. User "webuser" has uid/gid = 1001(webuser)/1000(ftpusers). Your mail spool has permission uid/gid = root(0)/mail(8), neither of which allows webuser to write to this mail spool to creates its own mail folder. Aki Tuomi <aki.tuomi(a)dovecot.fi> replies with several solutions: > In your configuration, dovecot uses whatever user/group returned by > PAM. Since the webuser has never logged in, it has no directory under > /var/mail. If you want, you can > > a) override mail_uid and mail_gid in userdb/passdb > b) pre-create /var/mail/webuser and chown it to webuser:ftpusers > c) you can let ftpusers write to /var/mail. Or if you dynamically/frequently onboard mail accounts, and users cannot arbitrarily write into this directory, you can "chmod 1777 /var/mail/" and let dovecot auto-create it (might also want to set "lda_mailbox_autocreate = yes". Joseph Tam <jtam.home(a)gmail.com>

2 1

Re: First steps in Dovecot; IMAP not working
by Aki Tuomi 17 Oct '16

17 Oct '16

On 13.10.2016 12:42, Marnaud wrote: > > "Aki Tuomi" <aki.tuomi(a)dovecot.fi> wrote: > >> doveconf -n shows what's there. if you have ssl=no somewhere else in the >> config after you set it to required, it gets overwritten. >> >> Aki > > Thanks, Aki. > It means I have to open each conf file (e.g. using nano) and search > for ssl=no; I'm right or there's a specific file to check? I see you replied to me only, please keep your replies on-list. Try grep -r ssl.*no /etc/dovecot Aki

4 13

Latest HG Changes (fac92b5) affect Sieve-Plugin/LMTP
by Thomas Leuxner 15 Oct '16

15 Oct '16

# 2.2.devel (c73322f): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.devel (fac92b5) # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 ==> /var/log/dovecot/dovecot.log <== Oct 15 09:50:15 nihlus dovecot: lmtp(11447): Connect from local Oct 15 09:50:15 nihlus dovecot: lmtp(tlx(a)leuxner.net): Panic: file lda-sieve-plugin.c: line 447 (lda_sieve_execute_scripts): assertion failed: (script != NULL) Oct 15 09:50:15 nihlus dovecot: lmtp(tlx(a)leuxner.net): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x938ae) [0x7fd161fc18ae] -> /usr/lib/dovecot/libdovecot.so.0(+0x9399c) [0x7fd161fc199c] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fd161f5b6de] -> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x3af8) [0x7fd15fdf8af8] -> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0x49) [0x7fd16258bb39] -> dovecot/lmtp [DATA tlx(a)leuxner.net](+0x724e) [0x7fd1629bc24e] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7fd161fd5e4c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x10a) [0x7fd161fd730a] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7fd161fd5ed5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fd161fd6078] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fd161f61be3] -> dovecot/lmtp [DATA tlx(a)leuxner.net](main+0x1a2) [0x7fd1629ba382] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fd161ba4b45] -> dovecot/lmtp [DATA tlx(a)leuxner.net](+0x5430) [0x7fd1629ba430] Oct 15 09:50:15 nihlus dovecot: lmtp(tlx(a)leuxner.net): Fatal: master: service(lmtp): child 11447 killed with signal 6 (core not dumped)

3 9

Re: First steps in Dovecot; IMAP not working
by Joseph Tam 14 Oct '16

14 Oct '16

Moi <anic297(a)mac.com> wrote: > I've made some more tests and I still can't receive mails; sending them > still works. I don't receive any error message, just the mails that are > supposed to be received won't come. > In the mail logs, I find only this relevant line: > dovecot: imap-login: Aborted login (no auth attempts in 2 secs): user=<> Did you post doveconf -n (I didn't catch the head of this thread)? That would be step 0. A good first step is to test whether you have basic authentication working (to separate out if you have a server or client issue). I assume you allow plaintext communication, but if not, substitute telnet with "openssl sclient -connect your-server:993": C: # telnet your-server 143 S: * OK [CAPABILITY ... C: x1 login testuser theirpassword If you get an OK response to this, it may be a client issue (check settings on client). If you get an error or failure, look inward: check logs and config. Joseph Tam <jtam.home(a)gmail.com>

2 1

Maildir Expunged GUID mismatch for UID
by Steven Xu 14 Oct '16

14 Oct '16

Dovecot version:2.2.25 Since we used to keep our email files on widows server, I made the following changes in maildir-storage.h #define MAILDIR_EXTRA_SEP ',' #define MAILDIR_INFO_SEP_S ":" to "+". Everything seems working except EXPUNG, The dovecot log is flooded by messages like following: imap(xxxxx): Error: Mailbox INBOX: Expunged GUID mismatch for UID 7039 Then I read the source code, and found the following lines in maildir-sync-index.c T_BEGIN { guid = maildir_uidlist_lookup_ext(ctx->mbox->uidlist, uid, MAILDIR_UIDLIST_REC_EXT_GUID); if (guid == NULL) guid = t_strcut(filename, ':'); mail_generate_guid_128_hash(guid, guid_128); } T_END; I have to change the code to guid = t_strcut(filename, '+'); So, should MAILDIR_EXTRA_SEP be used here instead of ':'? Thanks, Steven

2 1

update dovecot-acl in all subfolders in a public folder
by Lukas Henrich 14 Oct '16

14 Oct '16

Hello everyone, right now I have problem and can't find a proper solution. But first: dovecot-version: 2.2.13 Now to my problem: A client of mine uses a public folder called "groups". In this Folder are several subfolders like "Archive", "projects", "sales" und so on. Unfortunately this client (and his employees) created thousands of subfolders within these folders. The folder "groups" is stored in /data/vmail/domain.com/. So, if i type "tree -a -L 1 /data/vmail/domain.com/groups" I get the following outpout: /data/vmail/domain.com/groups/ ??? .Archive ??? .Archive.subfolder1 ??? .Archive.subfolder2 ??? .Archive.subfolder2.subfolder3 ??? .Archive.subfolder2.subfolder4 (....) ??? .projects ??? .projects.subfolder1 ??? .projects.subfolder2 ??? .projects.subfolder2.subfolder3 ??? .projects.subfolder2.subfolder4 (...) In this groups-folder are at the moment more than 3400 folders! Now to the permissions: When the folders "Archive", "projects" and so on had been created every folder got a dovecot-acl for the permission for each user, e.g.: user=user1 kxeilprwts user=user2 kxeilprwts This worked finde, as the dovecot-acl got copied from the parent folder when the employees created new subfolders. Now to my problem I'm facing right now: This client got 2 new employees. So how can I edit all these dovecot-acl files in all subfolders where these 2 new employess schould get access to? Thank you in advance! Yours sincerely, Lukas Henrich Furthermore here is the output of dovecot -n: # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 4.4.6-1-pve x86_64 Debian 8.4 auth_username_format = %Ln disable_plaintext_auth = no lda_mailbox_autocreate = yes mail_home = /data/vmail/domain.com/%Ln mail_location = maildir:~ mail_plugins = " acl" 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 ihave namespace { hidden = no ignore_on_failure = no inbox = no list = children location = maildir:/data/vmail/domain.com/%%n:INDEXPVT=/data/vmail/domain.com/%n/share… prefix = shared/%%n/ separator = / subscriptions = yes type = shared } namespace { hidden = no ignore_on_failure = no inbox = no list = yes location = maildir:/data/vmail/domain.com/groups:INDEXPVT=/data/vmail/domain.com/%n/gr… prefix = groups/ separator = / subscriptions = yes type = public } namespace inbox { inbox = yes location = mailbox Archiv { special_use = \Archive } mailbox Archive { auto = subscribe special_use = \Archive } mailbox Archives { special_use = \Archive } mailbox "Deleted Messages" { special_use = \Trash } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Entwürfe { special_use = \Drafts } mailbox "Gelöschte Elemente" { special_use = \Trash } mailbox "Gelöschte Objekte" { special_use = \Trash } mailbox Gesendet { special_use = \Sent } mailbox "Gesendete Elemente" { special_use = \Sent } mailbox "Gesendete Objekte" { special_use = \Sent } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Papierkorb { special_use = \Trash } mailbox Sent { auto = subscribe special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Spam { special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = INBOX/ separator = / subscriptions = yes } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } passdb { args = scheme=CRYPT username_format=%Ln /etc/dovecot/users driver = passwd-file } plugin { acl = vfile acl_shared_dict = file:/var/lib/dovecot/db/shared-mailboxes.db sieve = ~/dovecot.sieve sieve_dir = ~/sieve } postmaster_address = admin(a)domain.com protocols = " imap lmtp sieve sieve" service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { group = vmail user = vmail } } service imap-login { inet_listener imap { port = 143 } } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 24 } unix_listener /var/spool/postfix/private/lmtp-dovecot { group = postfix user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl_cert = </etc/ssl/certs/kmux-dovecot.intern.domain.com.crt ssl_key = </etc/ssl/private/kmux-dovecot.intern.domain.com.key userdb { args = /etc/dovecot/dovecot-ldap.conf.ext default_fields = uid=vmail gid=vmail home=/data/vmail/domain.com/%n driver = ldap } userdb { args = username_format=%Ln /etc/dovecot/users driver = passwd-file } protocol lmtp { mail_plugins = " acl sieve" } protocol lda { mail_plugins = " acl sieve" } protocol imap { mail_plugins = " acl imap_acl" }

1 0

fix SIS attachment errors
by Webert de Souza Lima 13 Oct '16

13 Oct '16

Hi, I've sent some e-mails about this before but since there was no answers I'll write it differently, with different information. I'm using SIS (Single Instance Attachment Storage). For any reason that is not relevant now, many attachments are missing and the messages can't be fetched: Error: read(attachments-connector(zlib(/dovecot/mdbox/bar.example/foo/storage/m.1))) failed: read(/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36[base64:19 b/l]) failed: open(/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36) failed: No such file or directory in this specific case, the /dovecot/attach/bar.example/23/ae/ director doesn't exist. In other cases, just one file is missing so I would assume the hardlink could be recreated and it would work. If I create the missing file (with touch or whatever), I get the following errors: Error: read(/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36[base64:19 b/l]) failed: Stream is smaller than expected (0 < 483065) Error: read(attachments-connector(zlib(/dovecot/mdbox/bar.example/foo/storage/m.1))) failed: read(/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36[base64:19 b/l]) failed: Stream is smaller than expected (0 < 483065) Error: fetch(body) failed for box=INBOX uid=15: BUG: Unknown internal error If I try to fill the file with the amount of bytes it complains about with the following command: $ dd if=/dev/zero of=/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36 bs=1 count=483065 then I get the following error: Error: read(/dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36[base64:19 b/l]) failed: Stream is larger than expected (483928 > 483065, eof=0) Error: read(attachments-connector(zlib(/srv/dovecot/mdbox/bar.example/foo/storage/m.1))) failed: read(//dovecot/attach/bar.example/23/ae/23aed008c1f32f048afd38d9aae68c5aeae2d17a9170e28c60c75a02ec199ef4e7079cd92988ad857bd6e12cd24cdd7619bd29f26edeec842a6911bb14a86944-fb0b6a214dfa63573c1f00009331bd36[base64:19 b/l]) failed: Stream is larger than expected (483928 > 483065, eof=0) Error: fetch(body) failed for box=INBOX uid=15: BUG: Unknown internal error Based on this I have a few questions: 1. Is there a way, or a tool to scan all mailboxes to get all the messages that have compromised attachments? 2. is there a way to "fix" the missing files (even if creating fake files or removing the attachments information from the messages) 3. What I need is to migrate these boxes using doveadm backup/sync, which fails when these errors occur. Is is possible to ignore them or is there another tool that would do it? Thank you. Webert Lima Belo Horizonte, Brasil

1 1

First steps in Dovecot; IMAP not working
by Marnaud 13 Oct '16

13 Oct '16

Hello, I'm new in Dovecot and am having troubles making it working. I'm trying using Outlook and Apple's Mail as the mail clients. Outlook says it can't establish a secured connection to the server (for the IMAP protocol). I'm guessing sending e-mails works but I can't check. This is my current configuration (using dovecot -n): # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-042stab116.1 x86_64 Debian 8.6 mail_location = mbox:~/mail:INBOX=/var/mail/%u 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" service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } } service imap-login { inet_listener imaps { port = 993 ssl = yes } } ssl = no ssl_cert = </etc/ssl/certs/mail.crt ssl_key = </etc/ssl/private/mail.key userdb { driver = passwd } userdb { driver = passwd } I find abnormal I'm seeing "ssl = no" in this configuration despite the fact that I have "ssl = required" in the /etc/dovecot/conf.d/10-ssl.conf file, but I'm new to this... I have looked around the web; finally, I'm asking here, hoping it's the correct place to ask. Arnaud

2 1

SSL error
by arnaud gaboury 13 Oct '16

13 Oct '16

I run dovecot + postfix as my email server. Everything is working as expected, but I see an error in the dovecot logs: lmtp(7331): Error: SSL context initialization failed, disabling SSL: ENGINE_init(dynamic) failed Dovecot is running and emails are OK. I wonder why this error and how I can fix it? I see it is a SSL issue but no idea in which direction to look. Thank you for help

2 4

Strange subscriptions added by dsync backup
by Rik Theys 13 Oct '16

13 Oct '16

Hi, We're in the process of migrating our dovecot 1.x mail server to a Dovecot 2.2.25 server. During the migration I'm moving from mbox storage to mdbox. I use the following method to do a one-way sync from our current mail server to our new mail server (command executed on the new server): doveadm -v -o imapc_host=oldserver \ -o imapc_user=$u \ -o imapc_master_user=$masteruser \ -o imapc_password="$masterpass" \ -o imapc_port=993 -o imapc_ssl=imaps \ -o ssl_client_ca_file=/etc/pki/tls/certs/ca-bundle.crt \ -o imapc_ssl_verify=yes \ -o mail_fsync=never \ -o mail_prefetch_count=20 \ backup -R -u $u imapc: $u is replaced by the username I'm migrating. The dsync command runs and exits with code 0 (all OK). However, when I look at the subscriptions file on the new server, there seem to be additional subscriptions that are not in the subscriptions file on the old server: 7b0d681945d0fc5711560000ffff90ca 7c0d681945d0fc5711560000ffff90ca 7d0d681945d0fc5711560000ffff90ca 7e0d681945d0fc5711560000ffff90ca 7f0d681945d0fc5711560000ffff90ca 800d681945d0fc5711560000ffff90ca Where do these come from? Is something wrong with the migration? It also seems that subscriptions for IMAP folders that only contain subfolders[1] are no longer present in the new subscriptions file: # diff -u sub-old.sorted sub-new.sorted --- sub-old.sorted 2016-10-11 13:42:44.175070610 +0200 +++ sub-new.sorted 2016-10-11 13:47:53.973888462 +0200 @@ -1,26 +1,26 @@ -Archive/Administration/ +7b0d681945d0fc5711560000ffff90ca +7c0d681945d0fc5711560000ffff90ca +7d0d681945d0fc5711560000ffff90ca +7e0d681945d0fc5711560000ffff90ca +7f0d681945d0fc5711560000ffff90ca +800d681945d0fc5711560000ffff90ca Archive/Administration/Conferences Archive/Announcements -Archive/Education/ Archive/Education/E02N3A Archive/Education/I0D51A Archive/Politics -Archive/Research/ -Archive/Research/FET/ Archive/Research/FET/VPH - Virtual Physiological Human Archive/Research/Grants/ICON IBBT Call 2011 Archive/Research/Grants/Marie Curie ITN 2011 Archive/Research/Grants/Odysseus Archive/Research/Grants/SymBioSysII/Funding Archive/Research/Grants/SymBioSysII/JobApplications -Archive/Research/Manuscripts/ Archive/Research/Manuscripts/ruby-ensembl-api Archive/Research/Projects/GUNZ Archive/Research/Projects/MIQAS Archive/Research/Projects/MODY Archive/Research/Projects/ruby-ensembl-api Archives -Archive/Service/ Archive/Service/EditorORC Archive/Service/Reviewing Deleted Messages Is this expected behaviour? Regards, Rik [1] On the old server a folder can only contain either messages or subfolders, not both at the same time. -- Rik Theys System Engineer KU Leuven - Dept. Elektrotechniek (ESAT) Kasteelpark Arenberg 10 bus 2440 - B-3001 Leuven-Heverlee +32(0)16/32.11.07 ---------------------------------------------------------------- <<Any errors in spelling, tact or fact are transmission errors>>

1 0

Auto-archiving
by ＠lbutlr 13 Oct '16

13 Oct '16

I’d like to know if there is a way to tell dovecot to 1) move messages older than # days to the Archive folder 2) rebuild the indexes 3) remove any folders that are left with no mail Preferably, I’d like this to be a action I an schedule via crontab or something to fire off for any users that want it. So, I do not want it to do this across all users and mailboxes.

3 5

Disappearing message when move to Inbox subfolder
by Simon 13 Oct '16

13 Oct '16

We are using dovecot 2.0.9 on Centos 6.5 and having the following issues for one single user/single mailbox. When an Outlook (2016) user creates a folder under their Inbox, it does not create in their mailbox (checking with webmail the folder is not there). If they drag a message to that folder in Outlook, then it disappears. Ive searched their mailbox using doveadm and its simply gone. Ive tested with webmail doing essentially the same thing and it works with no issues. Any ideas here would be most well received :) Thanks in advance, Simon

1 0

dsync replication quota2 issue
by George Kontostanos 12 Oct '16

12 Oct '16

Hello list, We are testing a configuration with 2 mail servers using dsync replication (dovecot 2.2.25 ). Everything works fine except the quota2 which is calculated wrong only on one server. Quota2 resides on different databases since each server needs to update it. The problem: The local server always updates quota2 twice on each message it receives. This happens only on one server. Updates run fine on the second. SQL Debug: Query UPDATE quota2 SET bytes=bytes+2108,messages=messages+1 WHERE username = 'user(a)domain.org' Query UPDATE quota2 SET bytes=bytes+2108,messages=messages+1 WHERE username = 'user(a)domain.org' The result on the server that runs fine mysql> select * from quota2; +----------------------------+---------+----------+ | username | bytes | messages | +----------------------------+---------+----------+ | | user(a)domain.org | 2917126 | 17 | The result on the server that has the problem: mysql> select * from quota2; +----------------------------+---------+----------+ | username | bytes | messages | +----------------------------+---------+----------+ | | user(a)domain.org | 2920317 | 19 | dovecot -n is the same on both: root@mx2:/var/log # dovecot -n # 2.2.25 (7be1766): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.15 (97b3da0) # OS: FreeBSD 10.3-RELEASE amd64 ufs auth_mechanisms = plain login auth_verbose = yes default_client_limit = 2560 default_process_limit = 512 dict { acl = mysql:/usr/local/etc/dovecot/dovecot-dict-shares-sql.conf.ext quota = mysql:/usr/local/etc/dovecot/dovecot-dict-quota-sql.conf.ext } doveadm_password = # hidden, use -P to show it doveadm_port = 12345 log_path = /var/log/dovecot.log mail_debug = yes mail_home = /usr/local/vhosts/mail/%d/%n mail_location = maildir:/usr/local/vhosts/mail/%d/%n:LAYOUT=fs mail_max_userip_connections = 70 mail_plugins = quota acl notify replication mail_privileged_group = vmail mail_shared_explicit_inbox = 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_write_locks = fcntl namespace { inbox = no list = children location = maildir:/usr/local/vhosts/mail/%%d/%%n:LAYOUT=fs:INDEX=/usr/local/vhosts/indexes/%d/%n/shared/%%u:INDEXPVT=/usr/local/vhosts/indexes/%d/%n/shared/%%u prefix = shared/%%d/%%n/ separator = / subscriptions = no type = shared } namespace inbox { inbox = yes list = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / type = private } passdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } plugin { acl = vfile acl_shared_dict = proxy::acl mail_replica = tcp:beta.sophimail.com:12345 quota = dict:User quota::proxy::quota quota_rule2 = Trash:storage=+100M sieve = /usr/local/vhosts/mail/%d/%n/.dovecot.sieve sieve_before = /usr/local/vhosts/sieve/before.d/ sieve_dir = /usr/local/vhosts/mail/%d/%n sieve_global_dir = /usr/local/vhosts/sieve/%d sieve_global_path = /usr/local/vhosts/sieve/%d/default.sieve } protocols = imap lmtp sieve sieve service aggregator { fifo_listener replication-notify-fifo { mode = 0666 user = vmail } unix_listener replication-notify { mode = 0666 user = vmail } } service auth-worker { user = vmail } service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0666 user = postfix } unix_listener auth-userdb { mode = 0600 user = vmail } user = dovecot } service config { unix_listener config { user = vmail } } service dict { unix_listener dict { mode = 0600 user = vmail } } service doveadm { inet_listener { port = 12345 } user = vmail } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service managesieve-login { inet_listener sieve { port = 4190 } process_min_avail = 0 service_count = 1 vsz_limit = 64 M } service replicator { unix_listener replicator-doveadm { mode = 0666 } } ssl_cert = </usr/local/etc/postfix/keys/domain.com.crt ssl_key = </usr/local/etc/postfix/keys/domain.com.key userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } protocol lmtp { mail_plugins = quota acl notify replication sieve notify replication } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep mail_plugins = quota acl notify replication imap_quota imap_acl notify replication } protocol lda { mail_plugins = quota acl notify replication sieve acl postmaster_address = root } local 192.168.3.6 { protocol imap { ssl_cert = </usr/local/etc/postfix/keys/domain.com.crt ssl_key = </usr/local/etc/postfix/keys/domain.com.key } } dovecot-dict-quota-sql.conf.ext: connect = host=127.0.0.1 dbname=quota user=mailadmin 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 } Sorry for the lengthy email, any help is very much appreciated. -- George Kontostanos ---

1 1

Detect IMAP server domain name in Dovecot IMAP proxy
by KT Walrus 12 Oct '16

12 Oct '16

I’m in the process of setting up a Dovecot IMAP proxy to handle a number of IMAP server domains. At the current time, I have my users divided into 70 different groups of users (call them G1 to G70). I want each group to configure their email client to access their mailboxes at a domain name based on the group they belong to (e.g., g1.example.com <http://g1.example.com/>, g2.example.com <http://g2.example.com/>, …, g70.example.com <http://g70.example.com/>). I will only support TLS encrypted IMAP connections to the Dovecot IMAP proxy (‘ssl=yes’ in the inet_listener). My SSL cert has alternate names for all 70 group domain names. I want the group domain to only support users that have been assigned to the group the domain name represents. That is, a user assigned to G23 would only be allowed to configure their email client for the IMAP server named g23.example.com <http://g23.example.com/>. My solution during testing has been to have the Dovecot IMAP proxy to listen on different ports: 9930-9999. I plan to purchase 70 IPs, one for each group, and redirect traffic on port 993 to the appropriate Dovecot IMAP proxy port based on the IP I assign to the group domain name in the site’s DNS. The SQL for handling the IMAP login uses the port number of the inet_listener I think this could work in production, but it will cost me extra to rent the 70 IPs and might be a pain to manage. Eventually, I would like to have over 5,000 groups so requiring an IP per group is less than ideal. I also think having Dovecot IMAP proxy have 5,000 inet_listeners might not work so well or might create too many threads/processes/ports to fit on a small proxy server. I would rather have 1 public IP for each Dovecot IMAP proxy and somehow communicate to the userdb which group domain name was configured in the email client so only the users assigned to this group can login with that username. Anyone have any ideas? For HTTP traffic, it is easy to query the host in the HTTP Request, but I don’t think IMAP traffic has such host info in it. Does the Dovecot IMAP proxy receive the hostname from the email client when exchanging SSL certs (like SNI for HTTPS)? Or, maybe I should have group domain in the username used to log in with (e.g., username+g23(a)example.com <mailto:username+g23@example.com> or username(a)g23.example.com <mailto:username@g23.example.com>). I don’t like to make the user configure their email client to log in with a name that is different than their mailbox address. It is simpler to just have them configure their email client with username(a)example.com <mailto:username@example.com> for both authorization and for the from/sender headers in the messages. Anyway, any ideas of how to set this up in production?

3 3

Outlook 2010 woes
by Bryan Holloway 12 Oct '16

12 Oct '16

Hello, everyone. We have recently begun migrating folks from an older server to a newer one, and things have been going quite well except for -- you guessed it -- Outlook 2010 users. Specifically it appears to be one customer in particular, and this particular customer has many nested mailboxes and lots of e-mail in general. Not sure if this is a factor. Old server: * Ubuntu 10.04.4 LTS * Dovecot 2.1.13 * Maildir++ * Local auth via passwd/shadow files New server: * Debian GNU/Linux 8.6 * Dovecot 2.2.13 * Maildir++ * Quotas enabled * LDAP Basically what's happening is that users are seeing large delays when navigating between different IMAP folders. So, for example, user "X" is sitting idle in their INBOX. If they then click on another folder there's a good 6-7 second delay before you can view its contents. If you immediately then navigate to other folders, you get a rapid response. But if the client then goes idle again for 10+ seconds, you will get this delay again. Some are reporting the OS saying "Outlook is not responding." (Everyone is running Windows 7.) Disclaimer: Yes, I know Outlook 2010 is a giant steaming pile of ____. However, everything worked dandy with Dovecot 2.1 and of course my customer is harping on this fact. Things I have tried/read about in the Dovecot list: * Check headers only -- doesn't seem to help. * Had a user completely remove their IMAP profile and re-add: no change. * Had a user set up an entirely new account on a new computer: same symptoms. * Someone mentioned to enable the "delay-newmail" workaround in 20-imap.conf, but this wasn't enabled in our 2.1 install, so that seems like it would not help our case. I was looking through the release notes of later Dovecots, and I noticed that in 2.2.14 there's mention of some issues with Outlook that were fixed, but it wasn't particularly specific about which versions. Should I be looking into that? And if so, is there a separate repository for newer dovecot? Currently the standard Debian 8.6 only has 2.2.13. Any help, suggestions, or pointers would be greatly appreciated. Thank you! - bryan

2 3

Problems with GSSAPI and LDAP
by Juha Koho 12 Oct '16

12 Oct '16

Hello, I have a Dovecot 2.2.25 set up with OpenLDAP back end. I was trying to set up a GSSAPI Kerberos authentication with the LDAP server but with little success. Seems no matter what I try I end up with the following error message: dovecot: auth: Error: LDAP: binding failed (dn (imap/host.example.com(a)EXAMPLE.COM)) Local error, SASL(-1): generic failure: GSSAPI Error: Unspecified GSS failure. Minor code may provide more information (No Kerberos credentials available (default cache: FILE:/tmp/dovecot.krb5.ccache)) I have set the import_environment in dovecot.conf: import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS KRB5CCNAME=FILE:/tmp/dovecot.krb5.ccache And these in LDAP configuration: dn = imap/host.example.com(a)EXAMPLE.COM sasl_bind = yes sasl_mech = gssapi sasl_realm = EXAMPLE.COM sasl_authz_id = imap/host.example.com(a)EXAMPLE.COM I have tried with different values in dn and sasl_authz_id and also leaving them out completely but I always end up with the error message above. Using simple bind without GSSAPI works just fine. The credentials cache file exists and is valid for the principal imap/host.example.com(a)EXAMPLE.COM. The file is owned by dovecot user so it shouldn't be a permission problem either. GSSAPI in OpenLDAP works but I suppose it is irrelevant here since the connection attempt never reaches the LDAP server due to the error. I also have similar setup for Postfix and it works fine. Any ideas what to try next? Best regards, Juha

2 9

Managesieve port 4190 not working
by Marcio Vogel Merlone dos Santos 12 Oct '16

12 Oct '16

Hi all, I am working on a fresh install with Ubuntu 16.04 LTS and Dovecot 2.2.22-1ubuntu2.1. I am unable to open port 4190, just 2000. I have this on 20-managesieve.conf: protocols = $protocols sieve service managesieve-login { inet_listener sieve { port = 4190 } inet_listener sieve_deprecated { port = 2000 } } service managesieve { process_limit = 1024 } protocol sieve { mail_debug=yes } This way I get only port 2000, if comment out the "sieve_deprecated" section leaving just the "inet_listener sieve" I get nothing. Could not find anything useful on logs or strace. Any hint? Thanks in advance, best regards. -- *Marcio Merlone*

2 1

Quota & prefetch uiserDB questions
by Cédric ML 12 Oct '16

12 Oct '16

Hello, I'm trying to make quota work on my dovecot server. I'm using prefetch userdb (source : http://wiki2.dovecot.org/UserDatabase/Prefetch) with a database located on a remote host : passdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } userdb { driver = prefetch } userdb { driver = sql args = /etc/dovecot/dovecot-sql.conf.ext } With password_query containing (source : http://wiki2.dovecot.org/Quota/Configuration) : password_query = SELECT \ username AS user, \ password, \ homedir AS userdb_home, \ maildir AS userdb_mail, \ uid AS userdb_uid, \ gid AS userdb_gid, \ CONCAT('*:bytes=', quota) AS userdb_quota_rule \ FROM mailbox \ WHERE username = '%u' When I change the quota value in DB, it's not reflected to maildirsize file of the user. If I delete maildirsize file, it's re-created but not with the quota value which is set in the DB. Questions : how is this maildirsize file created ? how is it updated ? is there a way to make maildir++ quota work with dovecot using prefetch userDB ? Or do I have to use dict quotas ? Many thanks for your help. Regards, Cédric

1 1

problem with quota warning script execution, error 75
by Ximo Mira 11 Oct '16

11 Oct '16

Hi, Im quite new to dovecot and im trying to run quota warning script with no success. Using "quota = count:User quota" and this script: ________________________ #!/bin/sh PERCENT=$1 USER=$2 cat << EOF | /usr/libexec/dovecot/dovecot-lda -d $USER -o "plugin/quota=count:User quota:noenforcing" From: support(a)company.com To: $USER Subject: Quota alert Quota usage is $PERCENT% Bye EOF ________________________ If I run the script manually from command line it works and message is delivered. If user reaches first configured limit (85%) Im getting this error. Oct 10 10:38:01 auth: Error: userdb(USER(a)DOMAIN.com): client doesn't have lookup permissions for this user: userdb reply doesn't contain uid (to bypass this check, set: service auth { unix_listener /var/run/dovecot/auth-userdb { mode=0777 } }) Oct 10 10:38:01 lda(USER(a)DOMAIN.com): Error: user USER(a)DOMAIN.com: Auth USER lookup failed Oct 10 10:38:01 lda: Fatal: Internal error occurred. Refer to server log for more information. Oct 10 10:38:01 quota-warning: Fatal: master: service(quota-warning): child 24515 returned error 75 Auth is LDAP based.

2 6

latest 2.2.25 Hibernation patch raises 100% cpu usage
by Harald Leithner 07 Oct '16

07 Oct '16

Hi, I use the xi Debian packages, the current 2.2.25 auto 47 build seams to include the commit 351aa01c6e I think this commit cases a 100% cpu usage. After some time 1-5 minutes the hibernate process uses 100% and strace floods the screen with: epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164437) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164437) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164436) = 3 epoll_wait(9, {{EPOLLIN|EPOLLHUP, {u32=2609346112, u64=140044312999488}}, {EPOLLIN|EPOLLHUP, {u32=2609364288, u64=140044313017664}}, {EPOLLIN|EPOLLHUP, {u32=2609380304, u64=140044313033680}}}, 34, 164435) = 3 Maybe its a client thats incompatible, downgrading to version +46 solve the problem. bye Harald

2 1

quelques nouvelles infos
by bunkertor 07 Oct '16

07 Oct '16

Hey, Voici ce que je viens de lire et c’est quelque chose de vraiment nouveau et intéressant, vous pouvez en lire plus à <http://wetoxymo.betkers.net/xoikk> Grosses bises, bunkertor

1 0

[imap-login] SSL related crashes using the latest 2.2.25
by Adi Pircalabu 07 Oct '16

07 Oct '16

I'm running Dovecot as proxy in front of some IMAP/POP3 Dovecot & Courier-IMAP servers and in the last couple of days I've been seeing a lot of imap-login crashes (signal 11) on both 2.2.18 and 2.2.25, all SSL related. The following backtraces are taken running 2.2.25, built from source on a test system similar to the live proxy servers. OS: CentOS 6.8 64bit Packages: openssl-1.0.1e-48.el6_8.3.x86_64, dovecot-2.2.25-2.el6.x86_64 built from source RPM. Can post "doveconf -a" if required. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 ssl_proxy_has_broken_client_cert (proxy=0x0) at ssl-proxy-openssl.c:677 677 { (gdb) bt full #0 ssl_proxy_has_broken_client_cert (proxy=0x0) at ssl-proxy-openssl.c:677 No locals. #1 0x00007fdec4e6b489 in login_proxy_ssl_handshaked (context=0x14b4170) at login-proxy.c:759 proxy = 0x14b4170 #2 0x00007fdec4e70e4b in ssl_handshake (proxy=0x169d7b0) at ssl-proxy-openssl.c:468 ret = <value optimized out> #3 ssl_step (proxy=0x169d7b0) at ssl-proxy-openssl.c:519 No locals. #4 0x00007fdec4beee0b in io_loop_call_io (io=0x13fdab0) at ioloop.c:564 ioloop = 0x12a07b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #5 0x00007fdec4bf0407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x12fb8d0 events = <value optimized out> event = 0x171fb20 list = 0x15f8c50 io = <value optimized out> tv = {tv_sec = 46, tv_usec = 134490} events_count = <value optimized out> msecs = <value optimized out> ret = 1 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #6 0x00007fdec4beeeb5 in io_loop_handler_run (ioloop=0x12a07b0) at ioloop.c:612 No locals. #7 0x00007fdec4bef058 in io_loop_run (ioloop=0x12a07b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #8 0x00007fdec4b81b23 in master_service_run (service=0x12a0650, callback=<value optimized out>) at master-service.c:640 No locals. #9 0x00007fdec4e6e593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x12a0390) at main.c:486 set_pool = 0x12a0b80 login_socket = <value optimized out> c = <value optimized out> #10 0x00007fdec47dad1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffc53ee5688, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffc53ee5678) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 5496455093114277129, 4204960, 140721716614784, 0, 0, -5494405746439844599, -5477823887334535927}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffc53ee5688}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #11 0x00000000004029c9 in _start () No symbol table info available. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 0x00007f1a58620dec in _IO_vfprintf_internal (s=<value optimized out>, format=<value optimized out>, ap=<value optimized out>) at vfprintf.c:1641 1641 process_string_arg (((struct printf_spec *) NULL)); (gdb) bt full #0 0x00007f1a58620dec in _IO_vfprintf_internal (s=<value optimized out>, format=<value optimized out>, ap=<value optimized out>) at vfprintf.c:1641 len = <value optimized out> string_malloced = <value optimized out> step0_jumps = {0, -1285, -1198, 3818, 3910, 3206, 3307, 4086, 1925, 2133, 2249, 3731, 4474, -4059, -1109, -1062, 868, 956, 968, 980, -1505, -495, 665, 755, 827, -3962, 395, 4392, -4059, 3997} space = 0 is_short = 0 use_outdigits = 0 step1_jumps = {0, 0, 0, 0, 0, 0, 0, 0, 0, 2133, 2249, 3731, 4474, -4059, -1109, -1062, 868, 956, 968, 980, -1505, -495, 665, 755, 827, -3962, 395, 4392, -4059, 0} group = 0 prec = -1 step2_jumps = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2249, 3731, 4474, -4059, -1109, -1062, 868, 956, 968, 980, -1505, -495, 665, 755, 827, -3962, 395, 4392, -4059, 0} string = <value optimized out> left = 0 is_long_double = 0 width = 0 step3a_jumps = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2336, 0, 0, 0, -1109, -1062, 868, 956, 968, 0, 0, 0, 0, 755, 0, 0, 0, 0, 0, 0} alt = 0 showsign = 0 is_long = 0 is_char = 0 pad = 32 ' ' step3b_jumps = {0 <repeats 11 times>, 4474, 0, 0, -1109, -1062, 868, 956, 968, 980, -1505, -495, 665, 755, 827, -3962, 395, 0, 0, 0} step4_jumps = {0 <repeats 14 times>, -1109, -1062, 868, 956, 968, 980, -1505, -495, 665, 755, 827, -3962, 395, 0, 0, 0} is_negative = <value optimized out> base = <value optimized out> the_arg = {pa_wchar = 0 L'\000', pa_int = 0, pa_long_int = 0, pa_long_long_int = 0, pa_u_int = 0, pa_u_long_int = 0, pa_u_long_long_int = 0, pa_double = 0, pa_long_double = 0, pa_string = 0x0, pa_wstring = 0x0, pa_pointer = 0x0, pa_user = 0x0} spec = 115 's' _buffer = {__routine = 0, __arg = 0xf583a1d84, __canceltype = 24, __prev = 0x0} _avail = <value optimized out> thousands_sep = 0x0 grouping = 0xffffffffffffffff <Address 0xffffffffffffffff out of bounds> done = 97 f = 0x7f1a58c90b0d "s" lead_str_end = 0x7f1a58c90b05 "%s:%u: %s" end_of_spec = <value optimized out> work_buffer = "\341v\361[\372\037\002\363\315\301y\017\302.\a\272\306B\267\001\377\244\276Uu\023\005\301\a\227\f\353\374\062V\002\000\000\000\000\320\006}S\375\177\000\000\340\062V\002\000\000\000\000\273\252\377W\032\177\000\000(\036f\002\000\000\000\000|\004}S\375\177\000\000\320\006}S\375\177\000\000a+\aX\032\177\000\000(\036f\002\000\000\000\000 \036f\002\000\000\000\000\360\003}S\375\177\000\000\301\025\000X\000\000\000\000\210\033f\002\000\000\000\000(\036f\002\024\000\000\000\t`\v\217~0\"\"\\\200'\217X_\331q\325o\244\210\000\000\000\000\340\062V\002\000\000\000\000\n\000\000\000\000\000\000\000Wo\020X\000\000\000\000\b\024V\002\000\000\000\000\226$\377W\032\177\000\000\001\000\000\000\000\000\000\000\211\001\000\000\000\000\000\000\260\006}S\375\177\000\000\240\257\235\003\000\000\000\000\260\006}S\375\177\000\000\200"... workstart = 0x0 workend = 0x7ffd537d0748 "" ap_save = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7ffd537d0b60, reg_save_area = 0x7ffd537d0aa0}} nspecs_done = 2 save_errno = 0 readonly_format = 0 args_malloced = 0x0 specs = 0xa00000001 specs_malloced = false jump_table = "\001\000\000\004\000\016\000\006\000\000\a\002\000\003\t\000\005\b\b\b\b\b\b\b\b\b\000\000\000\000\000\000\000\032\000\031\000\023\023\023\000\035\000\000\f\000\000\000\000\000\000\025\000\000\000\000\022\000\r\000\000\000\000\000\000\032\000\024\017\023\023\023\n\017\034\000\v\030\027\021\026\f\000\025\033\020\000\000\022\000\r" #1 0x00007f1a586d8c50 in ___vsnprintf_chk ( s=0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", maxlen=<value optimized out>, flags=1, slen=<value optimized out>, format=0x7f1a58c90ad8 "proxy: Received invalid SSL certificate from %s:%u: %s", args=0x7ffd537d0a80) at vsnprintf_chk.c:65 sf = {f = {_sbf = {_f = {_flags = -72515583, _IO_read_ptr = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", _IO_read_end = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", _IO_read_base = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", _IO_write_base = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", _IO_write_ptr = 0x1fe0e99 "k/CN=AddTrust External CA Root", _IO_write_end = 0x1fe0f6d "oodvale.vic.au): disconnecting 127.0.0.1 (Disconnected by client: EOF(0s idle, in=217, out=796))", _IO_buf_base = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root", _IO_buf_end = 0x1fe0f6d "oodvale.vic.au): disconnecting 127.0.0.1 (Disconnected by client: EOF(0s idle, in=217, out=796))", _IO_save_base = 0x0, _IO_backup_base = 0x0, _IO_save_end = 0x0, _markers = 0x0, _chain = 0x0, _fileno = 1489493956, _flags2 = 4, _old_offset = 139751135368008, _cur_column = 0, _vtable_offset = -57 '\307', _shortbuf = "X", _lock = 0x0, _offset = 4294967673, _codecvt = 0x381f620, _wide_data = 0x7ffd537d09c0, _freeres_list = 0x0, _freeres_buf = 0x7ffd537d0ab0, _freeres_size = 140726004157144, _mode = -1, _unused2 = "\032\177\000\000\000\000\000\000\000\000\000\000\315\320e\207\000\000\000"}, vtable = 0x7f1a58966440}, _s = { _allocate_buffer = 0, _free_buffer = 0}}, overflow_buf = "\001", '\000' <repeats 15 times>, "\001\000\000\000\000\000\000\000\350V\vY\032\177\000\000\200\302g\256\333\333;\221\330\n\311X\032\177\000\000\034\n}S\375\177\000\000\002\000\000\000\000\000\000"} ret = <value optimized out> #2 0x00007f1a58a220ff in vsnprintf (format=0x7f1a58c90ad8 "proxy: Received invalid SSL certificate from %s:%u: %s", args=0x7ffd537d0a80, size_r=0x7ffd537d0a5c) at /usr/include/bits/stdio2.h:78 No locals. #3 t_noalloc_strdup_vprintf (format=0x7f1a58c90ad8 "proxy: Received invalid SSL certificate from %s:%u: %s", args=0x7ffd537d0a80, size_r=0x7ffd537d0a5c) at strfuncs.c:132 args2 = {{gp_offset = 8, fp_offset = 48, overflow_arg_area = 0x7ffd537d0b60, reg_save_area = 0x7ffd537d0aa0}} tmp = 0x1fe0e38 "proxy: Received invalid SSL certificate from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315:6: k/CN=AddTrust External CA Root" init_size = 310 ret = <value optimized out> __FUNCTION__ = "t_noalloc_strdup_vprintf" #4 0x00007f1a58a221d9 in p_strdup_vprintf (pool=0x7f1a58c76830, format=<value optimized out>, args=<value optimized out>) at strfuncs.c:156 tmp = <value optimized out> buf = <value optimized out> size = <value optimized out> #5 0x00007f1a58a222ea in t_strdup_printf (format=<value optimized out>) at strfuncs.c:263 args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7ffd537d0b60, reg_save_area = 0x7ffd537d0aa0}} ret = 0x0 #6 0x00007f1a58c88548 in login_proxy_ssl_handshaked (context=0x3141260) at login-proxy.c:760 proxy = 0x3141260 #7 0x00007f1a58c8de4b in ssl_handshake (proxy=0x3498970) at ssl-proxy-openssl.c:468 ret = <value optimized out> #8 ssl_step (proxy=0x3498970) at ssl-proxy-openssl.c:519 No locals. #9 0x00007f1a58a0be0b in io_loop_call_io (io=0x322e900) at ioloop.c:564 ioloop = 0x1f817b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #10 0x00007f1a58a0d407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x1fdc8d0 events = <value optimized out> event = 0x34a22e8 list = 0x317b250 io = <value optimized out> tv = {tv_sec = 0, tv_usec = 614018} events_count = <value optimized out> msecs = <value optimized out> ret = 3 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #11 0x00007f1a58a0beb5 in io_loop_handler_run (ioloop=0x1f817b0) at ioloop.c:612 No locals. #12 0x00007f1a58a0c058 in io_loop_run (ioloop=0x1f817b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #13 0x00007f1a5899eb23 in master_service_run (service=0x1f81650, callback=<value optimized out>) at master-service.c:640 No locals. #14 0x00007f1a58c8b593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x1f81390) at main.c:486 set_pool = 0x1f81b80 login_socket = <value optimized out> c = <value optimized out> #15 0x00007f1a585f7d1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffd537d0de8, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffd537d0dd8) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -6805578527007124004, 4204960, 140726004157920, 0, 0, 6806940805326362076, 6897556252474660316}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffd537d0de8}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #16 0x00000000004029c9 in _start () No symbol table info available. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 t_strcut (str=0xffffffffffffffff <Address 0xffffffffffffffff out of bounds>, cutchar=64 '@') at strfuncs.c:294 294 for (p = str; *p != '\0'; p++) { (gdb) bt full #0 t_strcut (str=0xffffffffffffffff <Address 0xffffffffffffffff out of bounds>, cutchar=64 '@') at strfuncs.c:294 p = 0xffffffffffffffff <Address 0xffffffffffffffff out of bounds> #1 0x00007f1afa1a7d2f in get_var_expand_users (tab=0x1c37e98, user=0xffffffffffffffff <Address 0xffffffffffffffff out of bounds>) at client-common.c:523 i = <value optimized out> #2 0x00007f1afa1a7f29 in get_var_expand_table (client=0x27b85b0, msg=0x1c37e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:541 tab = 0x1c37e98 #3 client_get_log_str (client=0x27b85b0, msg=0x1c37e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:644 static_tab = {{key = 115 's', value = 0x0, long_key = 0x0}, {key = 36 '$', value = 0x0, long_key = 0x0}, {key = 0 '\000', value = 0x0, long_key = 0x0}} func_table = {{key = 0x7f1afa1b2d0c "passdb", func = 0x7f1afa1a7c70 <client_var_expand_func_passdb>}, {key = 0x0, func = 0}} tab = <value optimized out> e = <value optimized out> str = <value optimized out> str2 = <value optimized out> pos = <value optimized out> #4 0x00007f1afa1a847a in client_log_err (client=0x27b85b0, msg=0x1c37e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:692 _data_stack_cur_id = 3 #5 0x00007f1afa1ab51e in login_proxy_ssl_handshaked (context=0x237e910) at login-proxy.c:765 proxy = 0x237e910 #6 0x00007f1afa1b0e4b in ssl_handshake (proxy=0x23cb660) at ssl-proxy-openssl.c:468 ret = <value optimized out> #7 ssl_step (proxy=0x23cb660) at ssl-proxy-openssl.c:519 No locals. #8 0x00007f1af9f2ee0b in io_loop_call_io (io=0x285cf20) at ioloop.c:564 ioloop = 0x1bd87b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #9 0x00007f1af9f30407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x1c338d0 events = <value optimized out> event = 0x260eac0 list = 0x227b980 io = <value optimized out> tv = {tv_sec = 0, tv_usec = 519697} events_count = <value optimized out> msecs = <value optimized out> ret = 1 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #10 0x00007f1af9f2eeb5 in io_loop_handler_run (ioloop=0x1bd87b0) at ioloop.c:612 No locals. #11 0x00007f1af9f2f058 in io_loop_run (ioloop=0x1bd87b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #12 0x00007f1af9ec1b23 in master_service_run (service=0x1bd8650, callback=<value optimized out>) at master-service.c:640 No locals. #13 0x00007f1afa1ae593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x1bd8390) at main.c:486 set_pool = 0x1bd8b80 login_socket = <value optimized out> c = <value optimized out> #14 0x00007f1af9b1ad1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffcdfc7cd68, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffcdfc7cd58) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -5108975228267825424, 4204960, 140724062899552, 0, 0, 5107356402929858288, 5128673613026916080}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffcdfc7cd68}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #15 0x00000000004029c9 in _start () No symbol table info available. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 ssl_proxy_is_handshaked (proxy=0x21a930a940a43715) at ssl-proxy-openssl.c:720 720 { (gdb) bt full #0 ssl_proxy_is_handshaked (proxy=0x21a930a940a43715) at ssl-proxy-openssl.c:720 No locals. #1 0x00007f0c84b63326 in get_var_expand_table (client=0xc49c50, msg=0x8b5e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:556 ssl_state = <value optimized out> ssl_error = <value optimized out> tab = 0x8b5e98 #2 client_get_log_str (client=0xc49c50, msg=0x8b5e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:644 static_tab = {{key = 115 's', value = 0x0, long_key = 0x0}, {key = 36 '$', value = 0x0, long_key = 0x0}, {key = 0 '\000', value = 0x0, long_key = 0x0}} func_table = {{key = 0x7f0c84b6dd0c "passdb", func = 0x7f0c84b62c70 <client_var_expand_func_passdb>}, {key = 0x0, func = 0}} tab = <value optimized out> e = <value optimized out> str = <value optimized out> str2 = <value optimized out> pos = <value optimized out> #3 0x00007f0c84b6347a in client_log_err (client=0xc49c50, msg=0x8b5e38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\b\315@:6") at client-common.c:692 _data_stack_cur_id = 3 #4 0x00007f0c84b6651e in login_proxy_ssl_handshaked (context=0xf464b0) at login-proxy.c:765 proxy = 0xf464b0 #5 0x00007f0c84b6be4b in ssl_handshake (proxy=0xd5d600) at ssl-proxy-openssl.c:468 ret = <value optimized out> #6 ssl_step (proxy=0xd5d600) at ssl-proxy-openssl.c:519 No locals. #7 0x00007f0c848e9e0b in io_loop_call_io (io=0xdf5ea0) at ioloop.c:564 ioloop = 0x8567b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #8 0x00007f0c848eb407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x8b18d0 events = <value optimized out> event = 0xf305f0 list = 0xc4a700 io = <value optimized out> tv = {tv_sec = 0, tv_usec = 954174} events_count = <value optimized out> msecs = <value optimized out> ret = 1 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #9 0x00007f0c848e9eb5 in io_loop_handler_run (ioloop=0x8567b0) at ioloop.c:612 No locals. #10 0x00007f0c848ea058 in io_loop_run (ioloop=0x8567b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #11 0x00007f0c8487cb23 in master_service_run (service=0x856650, callback=<value optimized out>) at master-service.c:640 No locals. #12 0x00007f0c84b69593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x856390) at main.c:486 set_pool = 0x856b80 login_socket = <value optimized out> c = <value optimized out> #13 0x00007f0c844d5d1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffd41fc1f28, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffd41fc1f18) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3476376496289340868, 4204960, 140725710495520, 0, 0, 3475633251103023676, 3591732184888123964}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffd41fc1f28}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #14 0x00000000004029c9 in _start () No symbol table info available. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 0x00007ff9e5e5f40b in p_malloc (pool=0x1f10c90, str=0x1f1d3d0 "4qyKMRI+AAAAAAAA") at mempool.h:76 76 return pool->v->malloc(pool, size); (gdb) bt full #0 0x00007ff9e5e5f40b in p_malloc (pool=0x1f10c90, str=0x1f1d3d0 "4qyKMRI+AAAAAAAA") at mempool.h:76 No locals. #1 p_strdup (pool=0x1f10c90, str=0x1f1d3d0 "4qyKMRI+AAAAAAAA") at strfuncs.c:43 mem = <value optimized out> len = 17 #2 0x00007ff9e60c2e9f in client_get_session_id (client=0x1f10980) at client-common.c:482 buf = 0x1f1d328 base64_buf = 0x1f1d398 tv = {tv_sec = 1475622745, tv_usec = 58530} timestamp = 1475622745058530 i = 48 #3 0x00007ff9e60c302c in get_var_expand_table (client=0x1f10980, msg=0x1f1ce38 "proxy: SSL certificate not received from (null):0") at client-common.c:568 tab = 0x1f1ce70 #4 client_get_log_str (client=0x1f10980, msg=0x1f1ce38 "proxy: SSL certificate not received from (null):0") at client-common.c:644 static_tab = {{key = 115 's', value = 0x0, long_key = 0x0}, {key = 36 '$', value = 0x0, long_key = 0x0}, {key = 0 '\000', value = 0x0, long_key = 0x0}} func_table = {{key = 0x7ff9e60cdd0c "passdb", func = 0x7ff9e60c2c70 <client_var_expand_func_passdb>}, {key = 0x0, func = 0}} tab = <value optimized out> e = <value optimized out> str = <value optimized out> str2 = <value optimized out> pos = <value optimized out> #5 0x00007ff9e60c347a in client_log_err (client=0x1f10980, msg=0x1f1ce38 "proxy: SSL certificate not received from (null):0") at client-common.c:692 _data_stack_cur_id = 3 #6 0x00007ff9e60c651e in login_proxy_ssl_handshaked (context=0x256cfb0) at login-proxy.c:765 proxy = 0x256cfb0 #7 0x00007ff9e60cbe4b in ssl_handshake (proxy=0x23f6710) at ssl-proxy-openssl.c:468 ret = <value optimized out> #8 ssl_step (proxy=0x23f6710) at ssl-proxy-openssl.c:519 No locals. #9 0x00007ff9e5e49e0b in io_loop_call_io (io=0x256cc40) at ioloop.c:564 ioloop = 0x1ebd7b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #10 0x00007ff9e5e4b407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x1f188d0 events = <value optimized out> event = 0x24d25f0 list = 0x2561f10 io = <value optimized out> tv = {tv_sec = 0, tv_usec = 551105} events_count = <value optimized out> msecs = <value optimized out> ret = 1 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #11 0x00007ff9e5e49eb5 in io_loop_handler_run (ioloop=0x1ebd7b0) at ioloop.c:612 No locals. #12 0x00007ff9e5e4a058 in io_loop_run (ioloop=0x1ebd7b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #13 0x00007ff9e5ddcb23 in master_service_run (service=0x1ebd650, callback=<value optimized out>) at master-service.c:640 No locals. #14 0x00007ff9e60c9593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x1ebd390) at main.c:486 set_pool = 0x1ebdb80 login_socket = <value optimized out> c = <value optimized out> #15 0x00007ff9e5a35d1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffe367d2178, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffe367d2168) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -3428671975511032229, 4204960, 140729812590960, 0, 0, 3429075480732761691, 3429810282407657051}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffe367d2178}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #16 0x00000000004029c9 in _start () No symbol table info available. Core was generated by `dovecot/imap-login -D'. Program terminated with signal 11, Segmentation fault. #0 0x00007f029b173314 in str_sanitize_skip_start (src=0x2f6d6f632e61636f <Address 0x2f6d6f632e61636f out of bounds>, max_bytes=64) at str-sanitize.c:13 13 for (i = 0; i < max_bytes && src[i] != '\0'; ) { (gdb) bt full #0 0x00007f029b173314 in str_sanitize_skip_start (src=0x2f6d6f632e61636f <Address 0x2f6d6f632e61636f out of bounds>, max_bytes=64) at str-sanitize.c:13 chr = 0 i = 0 #1 str_sanitize (src=0x2f6d6f632e61636f <Address 0x2f6d6f632e61636f out of bounds>, max_bytes=64) at str-sanitize.c:88 str = <value optimized out> i = <value optimized out> #2 0x00007f029b3d7f9e in get_var_expand_table (client=0x221ee70, msg=0x187fe38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\bͰ\a\202\001:6") at client-common.c:548 tab = 0x187fe98 #3 client_get_log_str (client=0x221ee70, msg=0x187fe38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\bͰ\a\202\001:6") at client-common.c:644 static_tab = {{key = 115 's', value = 0x0, long_key = 0x0}, {key = 36 '$', value = 0x0, long_key = 0x0}, {key = 0 '\000', value = 0x0, long_key = 0x0}} func_table = {{key = 0x7f029b3e2d0c "passdb", func = 0x7f029b3d7c70 <client_var_expand_func_passdb>}, {key = 0x0, func = 0}} tab = <value optimized out> e = <value optimized out> str = <value optimized out> str2 = <value optimized out> pos = <value optimized out> #4 0x00007f029b3d847a in client_log_err (client=0x221ee70, msg=0x187fe38 "proxy: SSL certificate not received from \314-A\235q\210\021\b\354\062Lzح)\367.\002 \031\233 \362w⊓\224\356K7\343\224 \002\037\364!+\266\371\277O`K\021\bͰ\a\202\001:6") at client-common.c:692 _data_stack_cur_id = 3 #5 0x00007f029b3db51e in login_proxy_ssl_handshaked (context=0x19b2530) at login-proxy.c:765 proxy = 0x19b2530 #6 0x00007f029b3e0e4b in ssl_handshake (proxy=0x195df70) at ssl-proxy-openssl.c:468 ret = <value optimized out> #7 ssl_step (proxy=0x195df70) at ssl-proxy-openssl.c:519 No locals. #8 0x00007f029b15ee0b in io_loop_call_io (io=0x216d790) at ioloop.c:564 ioloop = 0x18207b0 t_id = 2 __FUNCTION__ = "io_loop_call_io" #9 0x00007f029b160407 in io_loop_handler_run_internal (ioloop=<value optimized out>) at ioloop-epoll.c:220 ctx = 0x187b8d0 events = <value optimized out> event = 0x1df4668 list = 0x2025710 io = <value optimized out> tv = {tv_sec = 11, tv_usec = 323409} events_count = <value optimized out> msecs = <value optimized out> ret = 3 i = <value optimized out> call = <value optimized out> __FUNCTION__ = "io_loop_handler_run_internal" #10 0x00007f029b15eeb5 in io_loop_handler_run (ioloop=0x18207b0) at ioloop.c:612 No locals. #11 0x00007f029b15f058 in io_loop_run (ioloop=0x18207b0) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #12 0x00007f029b0f1b23 in master_service_run (service=0x1820650, callback=<value optimized out>) at master-service.c:640 No locals. #13 0x00007f029b3de593 in login_binary_run (binary=<value optimized out>, argc=2, argv=0x1820390) at main.c:486 set_pool = 0x1820b80 login_socket = <value optimized out> c = <value optimized out> #14 0x00007f029ad4ad1d in __libc_start_main (main=0x402ac0 <main>, argc=2, ubp_av=0x7ffd637fd608, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7ffd637fd5f8) at libc-start.c:226 result = <value optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -4141182239951058275, 4204960, 140726272775680, 0, 0, 4142562126330825373, 4071998539020864157}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x404f70, 0x7ffd637fd608}, data = { prev = 0x0, cleanup = 0x0, canceltype = 4214640}}} not_first_call = <value optimized out> #15 0x00000000004029c9 in _start () No symbol table info available. -- Adi Pircalabu

2 2

[feature suggestion] pigeonhole - sendmail path for outgoing email
by krzf83＠gmail.com 06 Oct '16

06 Oct '16

pigeonhole seems to use /usr/sbin/sendmail for its outgoing emails - even tought that is does not seem to be documented anywhere. How about setting to specify diffrent sendmail program path and parameters?

3 4

doveadm reload kicked proxy/director users
by Peer Heinlein 06 Oct '16

06 Oct '16

We just noticed, that a doveadm reload kicked all existing imap-sessions on our Dovecot Director. We're surprised about that, because shutdown_clients is set to NO. Is there any way to reload a config change without kicking all IMAP sessions? Peer -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-42 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

1 0

Changing Dovecot's format from Maildir to mdbox
by Kristopher Joyce 05 Oct '16

05 Oct '16

Hello, I am trying to change Dovecot's email format from Maildir to mdbox. I have changed Maildir to mdbox in Mail_location from: maildir:/var/vmail/%d/%n to: mdbox:/var/vmail/%d/%n. Nothing seems to happen after I restart Dovecot. The users are virtual users and not local users. Is there something I am missing? Thanks Kris --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

2 1

Connection reset by peer query
by voytek＠sbt.net.au 05 Oct '16

05 Oct '16

One of my user having trouble 'synchronizing' his mobile with his mailbox looking at logs I can see like[1]: searching around, I found some posts suggesting index corruption?? what can or what should I do ? can I force re-index ? delete index files ? which ones ? using outlook on Win7, if relevant [1] Oct 05 11:24:32 imap(aaa(a)aaa.com.au): Info: Connection closed: Connection reset by peer in=238 out=1892993 # grep aaa@aaa /var/log/dovecot.log | grep reset | wc 10 130 1117 # grep aaa@aaa /var/log/dovecot.log.1 | grep reset | wc 30 406 3582

1 0

Dovecot + SAN with dedup+compression
by María Arrea 04 Oct '16

04 Oct '16

Hello We have a big Dovecot Server (over 20 TB of mail, 40K users, over 30K iops) and we are evaluating a new SAN Array. We have competitive proposals from Pure Storage (All Flash) , HP 3Par (Hybrid), NetApp FaaS (Hybrid) & EMC Unity (Hybrid). We rely in mdbox+zlib for main storage and mdbox+lzma for secondary storage, does anybody in the list have experience with SAN-based deduplication/compression? Regards Maria.

2 1

shared folders
by Scherff 04 Oct '16

04 Oct '16

Well, these is the complete output for dovecot -n : mail:~ # dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 (0c4ae064f307+) # OS: Linux 4.1.31-30-default x86_64 openSUSE 42.1 (x86_64) auth_mechanisms = plain login mail_gid = vmail mail_home = /var/vmail/mailboxes/%d/%n mail_location = maildir:~/mail:LAYOUT=fs mail_plugins = " acl" 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 namespace { hidden = no ignore_on_failure = no list = children location = maildir:%%h/mail:INDEX=%h/mail/shared/%%u:CONTROL=%h/mail/shared/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Archives { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Notes { auto = subscribe } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } plugin { acl = vfile:/var/vmail/dovecot-acl acl_shared_dict = file:/var/vmail/db/shared-mailboxes.db quota = maildir:User quota quota_exceeded_message = Benutzer %u hat das Speichervolumen überschritten. / User %u has exhausted allowed storage space. sieve = /var/vmail/sieve/%d/%n/active-script.sieve sieve_before = /var/vmail/sieve/global/spam-global.sieve sieve_dir = /var/vmail/sieve/%d/%n/scripts zlib_save = gz zlib_save_level = 6 } protocols = imap lmtp sieve service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 143 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } user = vmail } service managesieve-login { inet_listener sieve { port = 4190 } } ssl = required ssl_cert = </etc/fullchain.pem ssl_cipher_list = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA256:EECDH:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!IDEA:!ECDSA:kEDH:CAMELLIA128-SHA:AES128-SHA ssl_dh_parameters_length = 2048 ssl_key = </etc/privkey.pem ssl_prefer_server_ciphers = yes userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocol imap { imap_idle_notify_interval = 15 mins mail_max_userip_connections = 100 mail_plugins = " acl quota imap_quota zlib imap_acl" } protocol lmtp { mail_plugins = " acl sieve zlib" }

2 2

Dovecot + SAMBA4
by doys 04 Oct '16

04 Oct '16

hello, I'm new to this forum:) I couldn't found any topic with the same problem and I'm sorry for the inconvenience if there is already one. I'd like to use Dovecot with an authentification from Samba4 via Kerberos. I've followed this procedure : http://wiki2.dovecot.org/Authentication/Kerberos but I cannot connect to the domain. I have not met any difficulty with Samba ; I have others servers that are connected to the samba4 domain via samba/winbind wbinfo -u / -g et getent passwod / group works fine. I don't find the error and the logs are fruitless : Oct 4 09:03:46 mail dovecot: imap-login: Aborted login (no auth attempts in 0 secs): user=<>, rip=MY_IP, lip=IP_SERVER, session=<4ilrqQQ+2AAKaBFq> Oct 4 09:03:46 mail dovecot: imap-login: Aborted login (no auth attempts in 0 secs): user=<>, rip=MY_IP, lip=IP_SERVER, session=<7SprqQQ+2QAKaBFq> Oct 4 09:03:55 mail dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=MY_IP, lip=IP_SERVER, session=<JmjtqQQ+2gAKaBFq> Oct 4 09:03:55 mail dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=MY_IP, lip=IP_SERVER, session=<UyHuqQQ+2wAKaBFq> This is my docevot -n # 2.2.13: /etc/dovecot/dovecot.conf # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.6 auth_default_realm = DOMAIN.COM auth_gssapi_hostname = $ALL auth_mechanisms = gssapi auth_realms = DOMAIN.COM auth_username_translation = /@ mail_location = maildir:~/Maildir 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 = } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = " imap pop3" ssl = no userdb { driver = static } I wish to use maildir and I wish not to have multidomain. The server is a Debian 8 with compilated samba 4.4.5 + dovecot 2.2.13 (deb file). i dovecot-core - secure POP3/IMAP server - core files i dovecot-gssapi - secure POP3/IMAP server - GSSAPI support i dovecot-imapd - secure POP3/IMAP server - IMAP daemon i dovecot-pop3d - secure POP3/IMAP server - POP3 daemon i dovecot-sieve - secure POP3/IMAP server - Sieve filters su And this is what telnet returns : telnet localhost 143 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LOGINDISABLED AUTH=GSSAPI] Dovecot ready. Can you give me a hint, please ? Thank you ! doys Messages: 1 Inscrit le: 2016-10-04 10:31 Haut -- View this message in context: http://dovecot.2317879.n4.nabble.com/Dovecot-SAMBA4-tp57421.html Sent from the Dovecot mailing list archive at Nabble.com.

1 0

Re: NFSv4 and Maildir
by Joseph Tam 04 Oct '16

04 Oct '16

Noel Butler writes: >> I found the same thing, and turning off write delegation seemed >> to have solved the problem. I still don't know why, though. > > write delegation is disabled by default on NetApp with v4, or have they > changed this now? I think this is still the case: when I exported NFSv4, I also turned on both r/w delegation as well. The exported filesystem exhibited weird locking or slow write operations on NFS clients (e.g. "touch newfile" would take a second to complete). This went away when I turned off write delegation. Joseph Tam <jtam.home(a)gmail.com>

1 0

doveadm backup fails (compromised single attachment storage)
by Webert de Souza Lima 03 Oct '16

03 Oct '16

Hi, A couple of months ago I had a problem with Single Attachment Storage after infrastructure migration; All mailboxes were rsynced to another filesystem, and that may have broken Single Attachment Storage. Many, many (if not all) mailboxes show the below logs on dovecot: imap(foo(a)bar.com): Error: read(attachments-connector(zlib(/dovecotdir/mail/ bar.com/foo/mailboxes/INBOX/dbox-Mails/u.26426))) failed: read(/dovecotdir/attach/ bar.com/de/86/de8673894d6fb3f4460e3c26436eefa9a73517fa0f000452f553822367220… b/l]) failed: open(/dovecotdir/attach/ bar.com/de/86/de8673894d6fb3f4460e3c26436eefa9a73517fa0f000452f553822367220…) failed: No such file or directory When that happens, the MUA keeps syncing forever. Now, I need to migrate all mailboxes (again) to another dovecot instance (with no SAS), which works perfectly for new users but when I try to migrate users from my current dovecot server for this new server, I get such errors again, and I can't migrate: 2016-09-29T12:20:50.995934059Z Sep 29 12:20:50 dsync-server(foo(a)bar.com): Error: dsync(cf7d091311eb): read(attachments-connector(zlib(/dovecotdir/mdbox/bar.com/foo/storage/m.1))) failed: read(/dovecotdir/attach/ bar.com/0c/df/0cdf86b1920938fe3a043f87e2ee9e63dda276bd5b9fba687e4a0c63d181c… b/l]) failed: open(/dovecotdir/attach/ bar.com/0c/df/0cdf86b1920938fe3a043f87e2ee9e63dda276bd5b9fba687e4a0c63d181c…) failed: No such file or directory (last sent=mail, last recv=mail_request (EOL)) Is there a way to fix the attachments problem? (I know I can't recover such files, that's Ok) Is there a way to migrate (dsync backup) ignoring such problems? Thanks in advance.

1 2

shared folders
by Scherff 03 Oct '16

03 Oct '16

Hi, i am stuck. Try to install shared folders - dovecot is running fine. ACL is working. But i can't get running the shared folders. Maybe someone can help. This are the relevant conf. I think i have some mistake there - perhaps in location - changed try and error - stuck: mail_home = /var/vmail/mailboxes/%d/%n mail_location = maildir:~/mail:LAYOUT=fs namespace { hidden = no ignore_on_failure = no list = children location = maildir:%%h/mail:INDEX=%h/mail/shared/%%u:CONTROL=%h/mail/shared/%%u prefix = shared/%%u/ separator = / subscriptions = yes type = shared } namespace inbox { inbox = yes location = mailbox Archives { auto = subscribe special_use = \Archive } mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Notes { auto = subscribe } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } plugin { # global acl - prevent expunche for some folder acl = vfile:/var/vmail/dovecot-acl acl_shared_dict = file:/var/vmail/db/shared-mailboxes.db } protocol imap { imap_idle_notify_interval = 15 mins mail_max_userip_connections = 30 mail_plugins = " acl imap_acl" } protocol lmtp { mail_plugins = " acl" } Need some hint. Thanks Alfred

2 1

Shared folder in a sharded cluster setup
by Peer Heinlein 03 Oct '16

03 Oct '16

Hi! With Dovecot Director and Proxy or the new (great!) TAG-feature from Dovecot it's easy to set up a shared IMAP-Cluster with individual local filesystems. But I'm unsure if it's possible to build a setup where shared mailboxes still can work. If user A is on Cluster (1) and user B is on (2), and Cluster (1) does not have access to the mail-home from B on (2), then user A can not reach the shared folders provided from User B on (2). I hope that there is a kind of backend-proxy-mechanism, so that the imap process of A on (1) can imap-proxy the requests for the shared folder to a node from cluster shard (2). And: To be exact, the imap process on (1) should forward the request to cluster (2) by the director system to make sure, that the connection will terminate on the right active backend of User B. This sounds like a special problem if local filesystems with mdbox are used and I now the great features of using Dovecot on Object Store, where every node can check out all mail-locations from all users. But especially on obox-systems it is very important that requests for a user are always terminated on the same backend. So how can shared folders work there?! Node (1) can not checkout the shared folders from User B if his obox storage is already active on another host (2)! Peer -- Heinlein Support GmbH Schwedter Str. 8/9b, 10119 Berlin http://www.heinlein-support.de Tel: 030 / 405051-42 Fax: 030 / 405051-19 Zwangsangaben lt. §35a GmbHG: HRB 93818 B / Amtsgericht Berlin-Charlottenburg, Geschäftsführer: Peer Heinlein -- Sitz: Berlin

2 1

Requiring client certificate on only one interface
by Braden Thomas 02 Oct '16

02 Oct '16

Hi, I'm trying to require client certificates on only one interface. I'm running dovecot 2.1.7. There have been a couple of recent threads about this kind of configuration: http://dovecot.org/list/dovecot/2016-August/105244.html (Aug 2016) http://www.dovecot.org/list/dovecot/2016-February/103067.html (Feb 2016) However, these threads recommend an approach that no longer works. Specifically, the "-l" or "-P" arguments to imap-login no longer work. Is there currently a recommended way to configure dovecot like this? Braden

1 0

Re: Bug: Shared Mailbox - Case Sensitivity
by Aki Tuomi 01 Oct '16

01 Oct '16

Can you provide doveconf -n? ---Aki TuomiDovecot oy -------- Original message --------From: Leander Schäfer <info(a)netocean.de> Date: 01/10/2016 03:41 (GMT+02:00) To: Aki Tuomi <aki.tuomi(a)dovecot.fi>, Dovecot Mailing List <dovecot(a)dovecot.org>, Timo Sirainen <tss(a)iki.fi> Subject: Re: Bug: Shared Mailbox - Case Sensitivity Am I missing something, or might this be a bug as it seems to me? Am 16.09.16 um 14:21 schrieb Leander Schäfer: > Hi Aki, > > > Thanks for your advice. Yes, I'm aware of this. Yet lowercasing should > be the default since Dovecot 2.1.x., isn't it? Yet I wouldn't know > where exactly to implement this %L, since the ACLs are set through > IMAP commands through the users mailclient like Thunderbird. So in > other words, the email address to whom the user want to grant ACLs > provided by the user's mailclient, has nothing to do with my auth > backend where e.g. %u => %Lu would apply. PLease correct me if I'm > wrong here. > > > It clearly looks like a bug of the internal processing of the > "dovecot-acl-list" files. It simply lacks on a lowercase enforcement > in the code, like it already seems to do for the "dovecot-acl" file. > > > Best regards > > Leander Schäfer > > > > Am 16.09.16 um 12:53 schrieb Aki Tuomi: >> >> On 16.09.2016 12:54, Leander Schäfer wrote: >>> Hi, >>> >>> unfortunately I found a bug in Dovecot's ACL handling for shared >>> mailboxes. It turns out Dovecot doesn't enforce lower casing the >>> privileged username to whom the mailbox should be shared to. This >>> results in a invalid configuration. Users get confused, since they >>> passed on a valid email address in their ACL setup. >>> >>> /usr/local/www/default/mail/test(a)mydomain.localdomain/maildir/.Spam/dovecot-acl >>> >>> >>> user=leander(a)mydomain.localdomain eilrwts >>> ^^ works >>> >>> /usr/local/www/default/mail/leander(a)mydomain.localdomain/maildir/dovecot-acl >>> >>> >>> user=test(a)mydomain.localdomain eilrwts >>> ^^ works >>> >>> /usr/local/www/default/mail/test(a)mydomain.localdomain/maildir/.Drafts/dovecot-acl >>> >>> >>> user=Leander(a)MyDomain.LocalDomain eilrwts >>> ^^ Doesn't work >>> >>> Best regards >>> Leander Schäfer >> Hi! Did you know you can use %Lu instead of %u to force lowercasing? >> >> Aki

1 0

Re: NFSv4 and Maildir
by Joseph Tam 01 Oct '16

01 Oct '16

> we have a setup with (CentOS 6) Director+Dovecot, Maildir as storage on > NetApp NFS v3. Every time I try to switch to NFS v4 I found issue with > lock (and others). So for me NFSv4 with Maildir is "unstable" or need a > fine tuning that I don't know. I found the same thing, and turning off write delegation seemed to have solved the problem. I still don't know why, though. Joseph Tam <jtam.home(a)gmail.com>

2 1

Bug: Shared Mailbox - Case Sensitivity
by Leander Schäfer 01 Oct '16

01 Oct '16

Hi, unfortunately I found a bug in Dovecot's ACL handling for shared mailboxes. It turns out Dovecot doesn't enforce lower casing the privileged username to whom the mailbox should be shared to. This results in a invalid configuration. Users get confused, since they passed on a valid email address in their ACL setup. /usr/local/www/default/mail/test(a)mydomain.localdomain/maildir/.Spam/dovecot-acl user=leander(a)mydomain.localdomain eilrwts ^^ works /usr/local/www/default/mail/leander(a)mydomain.localdomain/maildir/dovecot-acl user=test(a)mydomain.localdomain eilrwts ^^ works /usr/local/www/default/mail/test(a)mydomain.localdomain/maildir/.Drafts/dovecot-acl user=Leander(a)MyDomain.LocalDomain eilrwts ^^ Doesn't work Best regards Leander Schäfer

3 4

acl_group not working not working correctly
by Leander Schäfer 01 Oct '16

01 Oct '16

Hi, I'm trying to setup group based ACLs coming from OpenLDAP. My setup doesn't require a POSIX Group match. In the Dovecot configuration file I have this: "user_attrs = [...], mailAclGroups=acl_groups" as well as "acl = vfile:/usr/local/etc/dovecot/global-acls:cache_secs=300". The user has "public" in the LDAP attribute "mailAclGroups". It seems to get everything right. I checked with doveadm - and I see public ist listed as expected: cat /var/log/debug.log [...] Sep 16 23:39:04 WM-01 dovecot: auth: Debug: client passdb out: OK 1 user=leander(a)mydomain.localdomain acl_groups=public [...] cat /usr/local/etc/dovecot/global-acls INBOX owner lrwstipekxa Drafts owner lrwstipeka Sent owner lrwstipeka Spam owner lrwstipeka Trash owner lrwstipeka Public authenticated l Public group-override=public lrwstipekx Public/* group-override=public lrwstipekx doveadm mailbox list -u leander(a)mydomain.localdomain Drafts Sent Trash Spam Shared Public Public/Service Center Shared/test(a)mydomain.localdomain Shared/test(a)mydomain.localdomain/Drafts Shared/test(a)mydomain.localdomain/Sent Shared/test(a)mydomain.localdomain/Trash Shared/test(a)mydomain.localdomain/Spam INBOX But here comes the strange thing: telnet equal to Thunderbird: . LIST "" "*" * LIST (\HasNoChildren \Drafts) "/" Drafts * LIST (\HasNoChildren \Sent) "/" Sent * LIST (\HasNoChildren \Trash) "/" Trash * LIST (\HasNoChildren \Junk) "/" Spam * LIST (\Noselect \HasChildren) "/" Shared * LIST (\HasChildren) "/" Shared/test(a)mydomain.localdomain * LIST (\HasNoChildren) "/" Shared/test(a)mydomain.localdomain/Drafts * LIST (\HasNoChildren) "/" Shared/test(a)mydomain.localdomain/Sent * LIST (\HasNoChildren) "/" Shared/test(a)mydomain.localdomain/Trash * LIST (\HasNoChildren) "/" Shared/test(a)mydomain.localdomain/Spam * LIST (\HasNoChildren) "/" INBOX . OK List completed (0.000 + 0.000 + 0.092 secs). Public and Public/* shoul be listed as well, but it isn't. Any idea why it is behaving like this? Thanks Best regards Leander Schäfer

1 1

[patch] Improved error checking for the dovecot-antispam-plugin
by Robert Munteanu 30 Sep '16

30 Sep '16

Hi, Hopefully this is the right channel for such a patch. I have a minor enhancement to submit for the antispam plugin http://hg.dovecot.org/dovecot-antispam-plugin It adds minimal error checking for the sendmail_binary, otherwise the reported error in case of a missing binary or one with missing permissions is generic and not useful. Thanks, Robert -- http://robert.muntea.nu/

3 6

NFSv4 and Maildir
by Robert Blayzor 30 Sep '16

30 Sep '16

Recently moving to newer storage platforms for mailbox storage so looking at moving mounts from NFSv3 with lots of issues with locking and caching to NFSv4. There seems to be a lot of benefits to v4 along with some other new features, namely “delegation”. So the question boils down to, to delegate or not delegate on Maildir storage. There may be many reasons based on actual platform why to do (or not to do this), but I want to get the general opinion from others that may have more experience with this. Our setup is several FreeBSD 10.x clients running Dovecot/Exim, NetApp NFS mail storage (probably moving to TrueNAS) and using F5 load balancers for client side connections/SSL offload. From what I’ve found (and what i’ve read in the RFC) is that delegation seems to work best when there is NOT a lot of file contention from clients accessing the same files. I realize that in some situations many people are using director to try and keep users on the same client; in our case we’re doing it with F5 iRules. The F5 iRules work great for POP3 and IMAP session persistence, but unfortunately that doesn’t work for SMTP and Dovecot LDA, so we still have possible race conditions from the MTA’s delivering into “INBOX”. (mostly dovecot indexes updating at the same time). So the big question is, who is using Dovecot with maildirs with NFSv4 mounts. What has your experience been? Are you using delegation? By choice and why did you come to that decision. I’m drawing up the conclusion that if you can *mostly* control client control to specific files (ie: directing access to a mailbox to come from one client), then delegation might be ok. However, if you’re not using director and have several NFS mail clients racing to access mailboxes, then delegation might turn into chaos. Your comments welcome and appreciated. -- Robert inoc.net!rblayzor XMPP: rblayzor.AT.inoc.net PGP Key: 78BEDCE1 @ pgp.mit.edu

2 1

Re: Dovecot 2.2.25 fails on SSL
by Andreas M. Kirchwitz 30 Sep '16

30 Sep '16

Joseph Tam <jtam.home(a)gmail.com> wrote: >>> OK, the origin of your problem becomes clearer. You can hardcode these >>> paths into the executables by doing something like >>> >>> env CFLAGS='-I/my'ssl/include' \ >>> LDFLAGS='-L/your/ssl/lib -Wl,-rpath,/my/ssl/lib' \ >>> configure ... >> >> Based on your mail I've tried CFLAGS/LDFLAGS again, and >> now Dovecot didn't even compile any longer. > > I don't use the same OS as you, but what errors dis you get? To be exact here, it's not the compiler but the linker failing (of course, the whole problem is about the linking process). With "--as-needed", the crypto/ssl libraries are not linked at all with the object files. I don't quite understand why it doesn't fall back to the system crypto/ssl libraries because they are in the default pathes with all other libraries. (That's basically what most other software packages do if my custom pathes for "-L" "-Wl,-R" somehow get ignored in the building process.) IMHO, the unusual option "--as-needed" should be removed. There seems to be no benefit but it basically keeps Dovecot to be linked against any custom-specified library. Maybe it's just a problem with RHEL/CentOS 6 and the GCC that ships with it. I'm compiling a lot of software myself and link it against my custom OpenSSL. Never had this problem before, otherwise I would have known to specify "-Wl,--no-as-needed" to reverse ld's behavior to the default. Well, at least I've learned something new. :-) Regards, Andreas

2 1

Softlinks
by Chris 29 Sep '16

29 Sep '16

All, I'm using Maildir. Is it possible to move all (or only some) maildirs with softlinks to another partition? - Chris

2 2

Login just at special timeslots / working hours
by Götz Reinicke - IT Koordinator 29 Sep '16

29 Sep '16

Hi, is there a dovecot feature I did not found yet, which can limit the access to the server to special timeslots like working hours? Or is that a serverside / sssd / auth / pam / account feature? Thanks for hints to some helpfull documentation and sugesstions. Regards . Götz

4 4

dovecot is moving messages to spam
by Webert de Souza Lima 28 Sep '16

28 Sep '16

Hi, is there any dovecot rule settings besides X-Spam-Flag header? Can it move messages via IMAP? I have a message that is being moved to spam folder after delivered in the INBOX but it has no X-Spam-Flag and it's not beeing done by the user (I changed his password, suspended his account and made his login impossible). This happens only when certain "FROM" address is present in the body, like the following message (sent via telnet): From:<some.guy(a)some.domain> Subject: Test teste . Dovecot logs: Sep 28 13:08:00 lmtp(my.user(a)my.domain): Info: OOKlA3rA61dNbwAAkzG9Ng: sieve: msgid=unspecified: stored mail into mailbox 'INBOX' Sep 28 13:08:01 imap(my.user(a)my.domain): Info: copy from INBOX: box=INBOX.Spam, uid=154, msgid=, size=340, subject=Test Sep 28 13:08:01 imap(my.user(a)my.domain): Info: expunge: box=INBOX, uid=18147, msgid=, size=340, subject=Test Thanks in advance

3 4

FreeBSD port
by The Doctor 28 Sep '16

28 Sep '16

Is the person responsible for the FreeBSD port on this list? There might be a minor bug in a small piece of correction code issues in the last 4 days. -- Member - Liberal International This is doctor@@nl2k.ab.ca Ici doctor@@nl2k.ab.ca God,Queen and country!Never Satan President Republic!Beware AntiChrist rising! http://www.fullyfollow.me/rootnl2k Look at Psalms 14 and 53 on Atheism Time for the USA to hold a referendum on its republic and vote to dissolve!!

4 4

Dovecot Pro Community Edition
by Markus Petzsch 28 Sep '16

28 Sep '16

Hi, I'm trying to setup push notifications for Open-Xchange (OX) and struggle with finding the push_notification plugin. According to https://oxpedia.org/wiki/index.php?title=AppSuite:OX_Mail#Requirements it should be found in the Dovecot Pro Community Edition. I'm currently running dovecot that came with CentOS 7.2 but am intrested in OX's push feature. Can someone point me in the right direction where to find the community edition repos? https://oxpedia.org/wiki/index.php?title=Dovecot:Main_Page_Dovecot#dovecotq… only lists password protected repos. Thx for your help in advance. Best Regards Markus Petzsch

2 1

Trying to regain access to my email archive after an upgrade.
by Rick Jones 27 Sep '16

27 Sep '16

Hi - I had been running an Ubuntu 12.04 system on which I receive email, with an inbox in /var/mail/ and a bunch of folders under ~/Maildir. When I upgraded from 14.04 there were a bunch of questions about keeping old/new config files and my muddling through it has me seeing only the inbox, and then a Drafts, Sent and Trash Folder. I would like to regain access to the messages stored under ~/Maildir, but have been thoroughly unsuccessful. I seem to run into duplicate prefix issues and I suspect I have other issues, when I try to add: namespace rest { separator = / prefix = location = maildir:~/Maildir } to what is already present. I've seen a few of the wiki pages, but not fully understanding what is going-on I'm afraid I've not groked them terribly well. any help/pointers for this cluser would be much appreciated. rick jones raj@tardy:~$ dovecot --version 2.2.9 raj@tardy:~$ dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -n > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:25: 'imaps' protocol is no longer necessary, remove it doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:732: protocol managesieve {} has been replaced by protocol sieve { } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:904: add auth_ prefix to all settings inside auth {} and remove the auth {} section completely doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:942: passdb pam {} has been replaced by passdb { driver=pam } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:1055: userdb passwd {} has been replaced by userdb { driver=passwd } doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:1117: auth_user has been replaced by service auth { user } # OS: Linux 3.13.0-95-generic x86_64 Ubuntu 14.04.5 LTS auth_mechanisms = plain login log_timestamp = "%Y-%m-%d %H:%M:%S " 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 } passdb { driver = pam } protocols = imap service auth { user = root } ssl_cert = </etc/dovecot/dovecot.pem ssl_key = </etc/dovecot/private/dovecot.pem userdb { driver = passwd } userdb { driver = passwd } protocol pop3 { pop3_uidl_format = %08Xu%08Xv } raj@tardy:~$ vi /etc/dovecot/conf.d/15-mailboxes.conf raj@tardy:~$ dovecot --version 2.2.9

1 0

imapc fetch optimization
by Nagy, Attila 27 Sep '16

27 Sep '16

Hi, imapc does a lot of UID FETCH $UID (BODY.PEEK[]), which is nice, because it works even with the dumbest IMAP server, altough it really kills performance, especially on high latency lines. I wonder: if IMAP servers can effectively handle boundless fetches (like a list with all wanted UIDs, or simply 1:* if all are needed), do you see this as a good addition to develop? This could be a new imapc_features setting afterall... Thanks,

2 8

Drac Plugin
by Darryl Baker 27 Sep '16

27 Sep '16

I now have the drac plugin compiled and working. The plugin binary might even work with the Debian/Ubuntu binary. It was a one line change. I need to talk to the sendmail folks about their macro for the DRAC feature. My custom sendmail.cf code works in a way that makes using drac and SpamHaus for anyone on a blacklisted IP such as non-comercial Comcast users. I am hoping that the drac plugin will get fixed in the core distribution and possible the new binary make it into the Debian/Ubuntu binary build. *** dovecot-2.2.22/src/plugins/drac/drac-plugin.c 2016-09-23 22:49:56.345568783 -0500 --- dovecot-2.2.22/src/plugins/drac/drac-plugin.c-orig 2016-09-26 14:33:46.828670909 -0500 *************** *** 25,31 **** /* libdrac function */ int dracauth(char *, unsigned long, char **); ! const char *drac_plugin_version = DOVECOT_ABI_VERSION; static struct timeout *to_drac = NULL; static const char *drachost = NULL; /* dracd host */ --- 25,31 ---- /* libdrac function */ int dracauth(char *, unsigned long, char **); ! const char *drac_plugin_version = DOVECOT_VERSION; static struct timeout *to_drac = NULL; static const char *drachost = NULL; /* dracd host */ *Darryl Baker*

2 1

Re: Shared mailboxes nightmare (for me :-( )
by Felix Rubio 27 Sep '16

27 Sep '16

Hi KR, Just checked the folders, and they do not contain any of these subfolders. This is the structure I see: . ├── dovecot-acl-list ├── dovecot.list.index ├── dovecot.list.index.log ├── dovecot.list.index.log.2 ├── dovecot.mailbox.log ├── dovecot-uidvalidity ├── dovecot-uidvalidity.570e9b2d ├── mailboxes │ ├── folderB │ │ └── dbox-Mails │ │ ├── dovecot.index │ │ ├── dovecot.index.backup │ │ ├── dovecot.index.cache │ │ ├── dovecot.index.log │ │ └── dovecot.index.thread │ ├── dovecot-acl │ ├── folderA │ │ └── dbox-Mails │ │ ├── dovecot.index.cache │ │ └── dovecot.index.log │ ├── folderC │ │ └── dbox-Mails │ │ ├── dovecot.index │ │ ├── dovecot.index.backup │ │ ├── dovecot.index.cache │ │ └── dovecot.index.log │ ├── INBOX │ │ └── dbox-Mails │ │ ├── dovecot.index │ │ ├── dovecot.index.backup │ │ ├── dovecot.index.cache │ │ └── dovecot.index.log │ ├── Junk │ │ └── dbox-Mails │ │ └── dovecot.index.log │ ├── Sent │ │ └── dbox-Mails │ │ ├── dovecot.index.cache │ │ └── dovecot.index.log │ └── Trash │ └── dbox-Mails │ └── dovecot.index.log ├── sieve │ ├── dovecot.sieve │ ├── dovecot.svbin │ └── tmp ├── spamassassin │ ├── bayes.mutex │ ├── bayes_seen │ └── bayes_toks ├── storage │ ├── dovecot.map.index │ ├── dovecot.map.index.log │ ├── m.1 │ ├── m.10 │ ├── m.11 │ ├── m.12 │ ├── m.13 │ ├── m.14 │ ├── m.2 │ ├── m.3 │ ├── m.4 │ ├── m.5 │ ├── m.6 │ ├── m.7 │ ├── m.8 │ └── m.9 └── subscriptions Update: I have finally managed to see these folders in roundcube, after setting subscriptions=no (instead of yes) in the shared namespace. Also, I have been able to keep it working with the single dovecot-acl file I have inside mailboxes. Is this structure correct? I am asking becaus I have another user, for which I migrated the format to mdbox, for which I have these folders (curr, tmp, new) but also the structure I have for the shared :s. Are both formats mixed for that user? Thank you, Felix On 27 September 2016 00:25:40 CEST, "dovecot(a)avv.solutions" <dovecot(a)avv.solutions> wrote: >Quick thought: are the sub-folder structure complete? > >I mean, do they have their cur+new+tmp directories? > >With their rights ownership+permissions? > >KR > >On 09/26/2016 11:31 PM, Felix Rubio Dalmau wrote: >> Hi everybody, >> >> I am honestly desperate: I have spent/invested the whole day in >trying to set a shared mailbox, with quite partial success. The INBOX >is merged with the top level mailbox, and there are many more folders. >To give an idea, for the shared account sharedacc(a)domain.org, this is >how looks the folder structure: >> >> sharedacc >> |-folderA >> |-folderB >> \-folderC >> >> in the account for usera(a)domain.org, I see the following: >> >> usera >> |-folderD >> |-folderE >> |-folderF >> \-shared >> \-sharedacc >> >> So, I do not get to see folderA, folderB, folderC, etc. >> >> My configuration is: >> >> # 2.2.25 (7be1766): /etc/dovecot/dovecot.conf >> # Pigeonhole version 0.4.14 (099a97c) >> # OS: Linux 4.5.4-0 x86_64 Debian stretch/sid zfs >> >> mail_plugins = zlib expire acl >> >> plugin { >> acl = vfile >> acl_shared_dict = proxy::acl >> } >> >> dict { >> acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext >> } >> >> namespace { >> list = children >> location = >mdbox:/mnt/vmail/%%d/%%n:INDEXPVT=/mnt/vmail/indexes/shared/%%d/%%n >> prefix = shared/%%n/ >> separator = / >> subscriptions = yes >> type = shared >> } >> >> protocol lmtp { >> mail_plugins = zlib expire acl sieve >> } >> >> protocol imap { >> mail_plugins = zlib expire acl antispam imap_acl >> } >> >> the files I have one the account for sharedacc are: >> sharedacc >> |-dovecot-acl >> |-dovecot-acl-list >> \-mailboxes >> |-dovecot-acl >> |-folderA >> | \-dbox-Mails >> | \-dovecot-acl >> |-folderB >> | \-dbox-Mails >> | \-dovecot-acl >> \-folderC >> \-dbox-Mails >> \-dovecot-acl >> >> In dovecot-acl-list I have the following contents: >> 1474920778 folderA >> 1474920778 folderB >> 1474920778 folderC >> >> and in every dovecot-acl, I have: >> user=usera(a)domain.org akxeilprwts >> >> All the files on the filesystem are owned by the same vmail user. >> What is strange is that I can see all these folderA, folderB, folderC >in roundcube, and I can click to subscribe to them. However, when I go >back to the general view, the subscriptions have been reset and I see >only sharedacc, without a thing inside. Finally, in kmail I can see the >subscribed folders without a problem (??!) >> >> Can please somebody help me? -- Sent from my phone. Please excuse my brevity. -- Sent from my phone. Please excuse my brevity.

1 0

Shared mailboxes nightmare (for me :-( )
by Felix Rubio Dalmau 27 Sep '16

27 Sep '16

Hi everybody, I am honestly desperate: I have spent/invested the whole day in trying to set a shared mailbox, with quite partial success. The INBOX is merged with the top level mailbox, and there are many more folders. To give an idea, for the shared account sharedacc(a)domain.org, this is how looks the folder structure: sharedacc |-folderA |-folderB \-folderC in the account for usera(a)domain.org, I see the following: usera |-folderD |-folderE |-folderF \-shared \-sharedacc So, I do not get to see folderA, folderB, folderC, etc. My configuration is: # 2.2.25 (7be1766): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.14 (099a97c) # OS: Linux 4.5.4-0 x86_64 Debian stretch/sid zfs mail_plugins = zlib expire acl plugin { acl = vfile acl_shared_dict = proxy::acl } dict { acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext } namespace { list = children location = mdbox:/mnt/vmail/%%d/%%n:INDEXPVT=/mnt/vmail/indexes/shared/%%d/%%n prefix = shared/%%n/ separator = / subscriptions = yes type = shared } protocol lmtp { mail_plugins = zlib expire acl sieve } protocol imap { mail_plugins = zlib expire acl antispam imap_acl } the files I have one the account for sharedacc are: sharedacc |-dovecot-acl |-dovecot-acl-list \-mailboxes |-dovecot-acl |-folderA | \-dbox-Mails | \-dovecot-acl |-folderB | \-dbox-Mails | \-dovecot-acl \-folderC \-dbox-Mails \-dovecot-acl In dovecot-acl-list I have the following contents: 1474920778 folderA 1474920778 folderB 1474920778 folderC and in every dovecot-acl, I have: user=usera(a)domain.org akxeilprwts All the files on the filesystem are owned by the same vmail user. What is strange is that I can see all these folderA, folderB, folderC in roundcube, and I can click to subscribe to them. However, when I go back to the general view, the subscriptions have been reset and I see only sharedacc, without a thing inside. Finally, in kmail I can see the subscribed folders without a problem (??!) Can please somebody help me?

1 0

Re: Self-Signed Certificate issue
by Joseph Tam 26 Sep '16

26 Sep '16

Darryl Baker writes: > I am running a small email site which I am moving from uw-imapd and Solaris > to Ubuntu and Dovecot imaps and pop3s. I am trying to use a self-signed > certificate for this site. I am using Thunderbird as the test client. I've > tried both the pre-built snakeoil certificate and building a special one > for dovecot. In /var/log/mail.err I keep getting what I am interpreting as > a missing CA cert. The message is: > > dovecot: imap-login: Error: SSL: Stacked error: error:14094418:SSL > routines:ssl3_read_bytes:tlsv1 alert unknown ca: SSL alert number 48 > > The certificate was created by: > > openssl req -new -x509 -days 365 -nodes -out /etc/ssl/certs/dovecot.pem > -keyout /etc/ssl/private/dovecot.pem Are you using this as a server certificate or as a client certificate? Please output your dovecot's configuration, esp. your SSL setup. doveconf -n | grep ssl Joseph Tam <jtam.home(a)gmail.com>

1 0

Setting hostdomain
by Arie Peterson 25 Sep '16

25 Sep '16

Hi all, Preparing for a replication setup, I read (at the bottom of <http://wiki2.dovecot.org/Replication>) that `dovecot --hostdomain` should give a different output on the two servers. This is not the case for me: both give "localhost". I'm trying to change my configuration to set the hostdomain to another value, but I can't find how to do this. I tried: • setting the environment variable DOVECOT_HOSTDOMAIN=mydomain in /etc/default/dovecot (which is read by the init script); • adding the line import_environment = TZ DOVECOT_HOSTDOMAIN=mydomain to dovecot.conf; • the combination of both of the above. However, after restarting dovecot none of these changes seem to have any effect: `dovecot --hostdomain` still returns "localhost". This is with dovecot version 2.2.13. How should one change this setting? Thanks, Arie

2 2

fail to compile with openssl-1.1.x
by A. Schulze 25 Sep '16

25 Sep '16

Hi again, now I get compile errors. Is openssl-1.1.xy supported? iostream-openssl.c: In function 'openssl_iostream_verify_client_cert': iostream-openssl.c:118:37: error: dereferencing pointer to incomplete type subject = X509_get_subject_name(ctx->current_cert); ^ iostream-openssl.c:127:37: error: dereferencing pointer to incomplete type X509_verify_cert_error_string(ctx->error), certname)); Andreas ^

2 1

configure fail if libssl is named libssl-opt
by A. Schulze 25 Sep '16

25 Sep '16

Hello, I try to build dovecot with my own version of openssl. It's compiled in a way the libraries can coexist without symbol conflict with the real OpenSSL in /usr: They are named libssl-opt and libcrypto-opt. Now configure fail to find my libssl-opt: CFLAGS="..." CXXFLAGS="..." CPPFLAGS="..." LDFLAGS="..." SSL_LIBS='-lssl-opt -lcrypto-opt' ./configure ... --with-ssl=openssl ... checking for SSL_read in -lssl... no configure: error: Can't build with OpenSSL: libssl not found Is there an other way to tell configure the ssl libraries have other names? Andreas

1 1

Proxy IMAP/POP
by Luis Miguel Flores dos Santos 25 Sep '16

25 Sep '16

Hello, I'm try configure dovecot to proxy imap and pop but I can't, follow my configurations: dovecot version = 2.2.10 My configuration: dovecot -n # 2.2.10: /etc/dovecot/dovecot.conf # OS: Linux 3.18.35 x86_64 CentOS Linux release 7.2.1511 (Core) auth_mechanisms = plain login auth_username_format = %n disable_plaintext_auth = no mail_location = maildir:~/Maildir 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 { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } ssl = no ssl_cert = </etc/pki/dovecot/certs/dovecot.pem ssl_key = </etc/pki/dovecot/private/dovecot.pem userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } grep -v '^ *$#.*$\?$' dovecot-sql.conf driver = mysql connect = "host=127.0.0.1 dbname=mail user=root password=PASS" password_query = SELECT NULL AS password, 'Y' as nopassword, host, destuser, 'Y' AS proxy FROM proxy WHERE user = '%u' /var/log/maillog: RHDOVECOT dovecot: auth: Fatal: Unknown database driver 'mysql' **OBS: I followed this wiki: http://wiki2.dovecot.org/PasswordDatabase/ExtraFields/Proxy and installed dovecot-mysql.x86_64, My server is a CentOS Linux release 7.2.1511 (Core) Anyone can help me? Thanks. -------- Atenciosamente, Luis Miguel

2 1

dovecot-2.2.18 / net_listen_unix(...) failed: Value too large for defined data type
by Christophe Bricout 25 Sep '16

25 Sep '16

Dear All, SUMMARY: Dovecot shows an issue when "localstatedir" path is too long The issue exists also with dovecot-2.2.25 CONFIGURATION: The configure options are: ./configure --prefix=${TARGET_DIR} \ --sysconfdir=${TARGET_DIR}/cfg \ --localstatedir=${TARGET_DIR}/var \ --with-ssl=openssl \ --with-sqlite \ --disable-shared RESULTS: When executing dovecot (as root), the followin message appears: Error: service(dict): net_listen_unix(/<user>/localbin/minnowboard-turbot-applications/1.0/linux/x86_64-linux/localbin/dovecot/2.2.18/linux/x86_64-linux/var/run/dovecot/dict) failed: Value too large for defined data type Error: service(config): net_listen_unix(<user>/localbin/minnowboard-turbot-applications/1.0/linux/x86_64-linux/localbin/dovecot/2.2.18/linux/x86_64-linux/var/run/dovecot/config) failed: Value too large for defined data type --- WORKAROUND: The problem is solved by defining shorten localstatedir or using base_dir = /var/run/dovecot. It seems the path lengh causing a such issue. Path Lengh > 127 Available for additional experiments Best Regards

2 1

Re:Self-Signed Certificate issue
by dovecot＠outputservices.com 23 Sep '16

23 Sep '16

Try this: Create a directory and do the following in that directory. Create the file openssl.cnf with the following information: [ req ] default_md = sha2 distinguished_name = req_distinguished_name [ req_distinguished_name ] countryName = US localityName = Boulder organizationName = Your orginizations name here organizationalUnitName = IT Department emailAddress = some email address at your company commonName = "Just a simple statement about the company" [ certauth ] subjectKeyIdentifier = hash authorityKeyIdentifier = keyid:always,issuer:always basicConstraints = CA:true [ client ] basicConstraints = critical,CA:FALSE keyUsage = digitalSignature, keyEncipherment, dataEncipherment extendedKeyUsage = clientAuth Just change the things you need to for you. Then issue the following command. openssl req -config ./openssl.cnf -newkey rsa:2048 -nodes -keyform PEM -keyout dovecot.key -x509 - days 365 -extensions certauth -outform PEM -out dovecot.pem -subj "/C=US/postalCode=00000/ST=state/L=city/streetAddress=some street/O=company name/OU=IT Department/CN=dovecort cert/emailAddress=email(a)yourcompany.com" Just change the C, O, OU, etc for your needs. Then verify the contents via: openssl x509 -noout -in dovecot.pem -subject openssl x509 -noout -in dovecot.pem -issuer openssl x509 -noout -in dovecot.pem -enddate openssl x509 -noout -in dovecot.pem -text This will show what is in the certificate. Now copy the pem & key files to where you want them. Restart dovecot. You may have to change the configuration to use the names just created. Dave Ryan On 09/23/16 11:07, Darryl Baker wrote: > My apologies if this is a repeat but my search of the archive did not turn > it up in the recent past. If this has been covered just point me at the > previous thread, please. > > I am running a small email site which I am moving from uw-imapd and Solaris > to Ubuntu and Dovecot imaps and pop3s. I am trying to use a self-signed > certificate for this site. I am using Thunderbird as the test client. I've > tried both the pre-built snakeoil certificate and building a special one > for dovecot. In /var/log/mail.err I keep getting what I am interpreting as > a missing CA cert. The message is: > > dovecot: imap-login: Error: SSL: Stacked error: error:14094418:SSL > routines:ssl3_read_bytes:tlsv1 alert unknown ca: SSL alert number 48 > > > The certificate was created by: > > openssl req -new -x509 -days 365 -nodes -out /etc/ssl/certs/dovecot.pem > -keyout /etc/ssl/private/dovecot.pem > > > The Dovecot version is 2.2.22 (fe789d2) The Ubuntu version is 16.04 LTS > current patches. > > > *Darryl Baker* > >

1 0

Director keeping IMAP connections alive
by Webert de Souza Lima 23 Sep '16

23 Sep '16

Hello, I have a 2 director - 2 dovecot set up in a cluster. >From time to time I notice high usage of RAM by dovecot process, and analyzing with doveadm who, I see many users with dozens, even hundreds of PIDs. Inspecting those PIDs I see each one of them is an IMAP connection, coming from either director process, and ESTABILISHED. A deeper analysis shows me that there ltos of connections from the same users to BOTH dovecot instances, but as I am using director, this shouldn't happen, right? Ok. The thing is, one of the dovecot instances have only old connections (like 3 days old) and the other dovecot have some old and some newer connections. So, director is redirecting recent connections to the right dovecot, as expected, but it is keeping many of old and unused connections open, consuming resources. output of doveconf -n from dovecot: http://pastebin.com/trMEjeAs output of doveconf -n from director: http://pastebin.com/EUpHYMKY Thanks.

1 1

Broken auth-* sockets.
by ygrishin＠pyramidheadgroup.ca 23 Sep '16

23 Sep '16

Hello. I am migrating my servers to Ubuntu and have been having an issue with Dovecot authenticator service. Exim is set up to use dovecot-auth, anticipating the question whether exim binary was compiled with support of Dovecot authenticator, it was: --- # exim -bV Exim version 4.86_2 #1 built 05-Apr-2016 12:21:41 Copyright (c) University of Cambridge, 1995 - 2015 (c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2015 Berkeley DB: Berkeley DB 5.3.28: (September 9, 2013) Support for: crypteq iconv() IPv6 PAM Perl Expand_dlfunc GnuTLS move_frozen_messages Content_Scanning DKIM Old_Demime DNSSEC PRDR OCSP Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch ldap ldapdn ldapm mysql nis nis0 passwd pgsql sqlite Authenticators: cram_md5 cyrus_sasl dovecot plaintext spa tls Routers: accept dnslookup ipliteral iplookup manualroute queryprogram redirect Transports: appendfile/maildir/mailstore/mbx autoreply lmtp pipe smtp Fixed never_users: 0 Size of off_t: 8 Configuration file is /etc/exim4/exim4.conf --- The problem is sockets Dovecot creates are somehow broken. Exim reports something like: --- 2016-09-21 14:45:26 dovecot_plain authenticator failed for *** ([***]) [***]: 435 Unable to authenticate at present: authentication socket connection error 2016-09-21 14:45:26 dovecot_login authenticator failed for *** ([***]) [***]: 435 Unable to authenticate at present: authentication socket connection error --- and I initially thought it was wrong permissions for the socket, triple checked and they are 100% right. More than that, I temporarily chmodded it "rw" for the world as follows: --- # ls -l /var/dovecot/auth-* srw-rw-rw- 1 Debian-exim root 0 Aug 17 21:20 /var/dovecot/auth-client srw------- 1 dovecot root 0 Aug 17 21:20 /var/dovecot/auth-login srw-rw-rw- 1 Debian-exim root 0 Aug 17 21:20 /var/dovecot/auth-master -rw------- 1 root root 32 Aug 15 19:35 /var/dovecot/auth-token-secret.dat srw-rw-rw- 1 dovecot root 0 Aug 17 21:20 /var/dovecot/auth-userdb srw------- 1 dovecot root 0 Aug 17 21:20 /var/dovecot/auth-worker --- and Exim reports the same problem. What makes me think that it's Dovecot's and not Exim's problem? The fact that the socket is really broken, on the server where it's not working: --- # socat - UNIX-CONNECT:/var/dovecot/auth-client 2016/09/22 17:58:27 socat[15192] E connect(5, AF=1 "/var/dovecot/auth-client", 26): Connection refused --- on the server where it is working (version 2.2.13 is installed there), precisely same command: --- # socat - UNIX-CONNECT:/var/dovecot/auth-client VERSION 1 1 MECH PLAIN plaintext MECH LOGIN plaintext MECH CRAM-MD5 dictionary active MECH DIGEST-MD5 dictionary active mutual-auth MECH APOP private dictionary active SPID 535 CUID 880 COOKIE 0311e84ed191fb63334819b1fc3bf2e3 DONE --- with a different result!!! The system: --- uname -a Linux *** 4.4.0-38-generic #57-Ubuntu SMP Tue Sep 6 15:41:41 UTC 2016 i686 i686 i686 GNU/Linux --- Doveconf: --- # dovecot -n # 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 4.4.0-38-generic i686 Ubuntu 16.04.1 LTS ext3 auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login cram-md5 digest-md5 apop debug_log_path = /var/log/dovecot-debug.log default_internal_user = dovenull disable_plaintext_auth = no first_valid_uid = 114 log_path = /var/log/dovecot.log login_greeting = IMAP/POP3 server is ready. login_log_format_elements = user=<%u> method=%m rip=%r lip=%l %c mail_location = maildir:/var/mail/exim/%d/%n mail_log_prefix = "%Us(%u): " 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 { args = /etc/dovecot/dovecot-sql.conf driver = sql } protocols = imap pop3 service auth { unix_listener auth-client { mode = 0660 user = Debian-exim } unix_listener auth-master { mode = 0600 user = Debian-exim } user = root } service imap-login { chroot = login client_limit = 8 inet_listener imap { address = * port = 143 } inet_listener imaps { address = * port = 10143 } process_limit = 8 process_min_avail = 5 service_count = 1 user = dovenull vsz_limit = 64 M } service imap { drop_priv_before_exec = yes process_limit = 64 vsz_limit = 2 G } service pop3-login { chroot = login client_limit = 8 inet_listener pop3 { address = * port = 110 } inet_listener pop3s { address = * port = 10110 } process_limit = 8 process_min_avail = 5 service_count = 1 user = dovenull vsz_limit = 64 M } service pop3 { drop_priv_before_exec = yes process_limit = 64 vsz_limit = 2 G } ssl = no ssl_cert = </etc/dovecot/ssl/server.crt ssl_cipher_list = ALL:!LOW:!SSLv2 ssl_key = </etc/dovecot/ssl/server.key userdb { driver = passwd } userdb { args = /etc/dovecot/dovecot-sql.conf driver = sql } verbose_proctitle = yes protocol lda { auth_socket_path = /var/dovecot/auth-master info_log_path = /var/log/dovecot-lda.log log_path = /var/log/dovecot-lda-errors.log postmaster_address = postmaster@*** } protocol imap { imap_client_workarounds = delay-newmail tb-extra-mailbox-sep } protocol pop3 { pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv } --- Sounds like a broken Dovecot install, doesn't it? Looks like not the case: --- # apt-get check Reading package lists... Done Building dependency tree Reading state information... Done --- What else to check?

2 2

Logging of custom mail headers
by Francesco Fiore 22 Sep '16

22 Sep '16

Hi, I need to configure Dovecot to log some custom mail headers. I red the documentation of the mail_log plugin but I didn't found which field I've to use as value for mail_log_fields parameter. So, I red the plugin code but in mail-log-plugin.c there're defined only "from" and "subject" fields that match some email header. I found three alternatives: 1. use the mail_filter plugin (spawning a new process, ecc.) 2. coding a new plugin using the notify plugin 3. propose a patch to the mail_log plugin that use a new configuration parameter (es. mail_log_headers) and log the specified mail headers Which is the better solution for you? Thanks in advance Francesco

1 1

Sieve vacation won't send second reply after timeout interval.
by David Williams 21 Sep '16

21 Sep '16

Hi I solved this by updating to Dovecot 2.2.24 David

1 0

dsync-server: Configure lock-file location?
by Udo Waechter 21 Sep '16

21 Sep '16

Good day everyone, I have a situation where my mail-folder structure (mdbox) ist like this: My users have the following data: $ doveadm user XYZ(a)xx.com field value home /srv/mail/ mail mdbox:foo/XYZ@xx.com/ I also do replication between 2 nodes. Now, I sometimes (when a lot of replication is happening I get the following errors: dovecot: dsync-local(XYZ(a)xx.com): Error: Couldn't lock /srv/mail//.dovecot-sync.lock: Timed out after 60 seconds This of course not only for XYZ(a)xx.com It seems to me, that my mailbox structure should rather be: $ doveadm user XYZ(a)xx.com field value home /srv/mail/foo mail mdbox:XYZ@xx.com/ in order to get rid of these messages? Unfortunatly I cannot change that. I've searched around and took a look into the code of dsync-server, unfortunatly the path to the lockfile is not configurable. Is there a way to somehow configure the lock-file location for dsync-server? Thanks very much, udo.

1 0

ldap sasl bind and auth_bind
by Matwey V. Kornilov 20 Sep '16

20 Sep '16

Hello, I am using # dovecot --version 2.2.18 # dovecot -n # 2.2.18: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.8 (0c4ae064f307+) doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -n > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:24: 'imaps' protocol can no longer be specified (use protocols=imap). to disable non-ssl imap, use service imap-login { inet_listener imap { port=0 } } doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -n > dovecot-new.conf doveconf: Warning: Obsolete setting in /etc/dovecot/dovecot.conf:24: 'imaps' protocol can no longer be specified (use protocols=imap). to disable non-ssl imap, use service imap-login { inet_listener imap { port=0 } } # OS: Linux 4.1.27-27-default x86_64 openSUSE 42.1 (x86_64) first_valid_uid = 1 mail_location = maildir:~/Maildir 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 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 { sieve = file:~/sieve;active=~/.dovecot.sieve } protocols = lmtp imap service imap-login { inet_listener imap { port = 0 } } ssl = required ssl_ca = /etc/pki/trust/anchors/rootCA.pem ssl_cert = </etc/openldap/openldap.crt ssl_dh_parameters_length = 2048 ssl_key = </etc/openldap/openldap.key ssl_options = no_compression ssl_prefer_server_ciphers = yes userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap override_fields = uid=vmail gid=vmail home=/var/spool/mail/%d/%n } I use LDAP for user and passwd databases as the following: uris = ldapi:/// sasl_bind = yes sasl_mech = EXTERNAL auth_bind = yes And I found that only first authentication after dovecot restart is successful, the others always fail with temp. The reason is that dovecot rebinds to anonymous bind after succesful auth bind instead of rebinding to external sasl bind.

1 1

Sieve vacation won't send second reply after timeout interval.
by David Williams 20 Sep '16

20 Sep '16

Hi there I'm having problems getting sieve to send a second vacation response. For testing I've set sieve_vacation_min_period = 500s and the seconds option in the script is 600. I send the first test message and get a reply fine I then wait about 12 minutes send a second message and get no reply. In the log I get "discarded duplicate response". I've restarted dovecot and removed the .dovecot.lda-dupes file before running the last test. I'm using LMTP for delivery to Dovecot. The sieve script is require ["vacation-seconds"]; # rule:[Vacation] if true { vacation :seconds 600 :addresses "username(a)mydomain.com" :subject "vacation" "test"; } and doveconf -n is # 2.2.19: /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.9 (357ac0a0e68b+) # OS: Linux 3.18.12-gentoo x86_64 Gentoo Base System release 2.2 ext4 auth_username_format = %Ln disable_plaintext_auth = no imap_capability = +XLIST mail_location = maildir:/srv/mail/%n/Maildir 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 vacation-seconds imapflags notify namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox "Sent Items" { auto = subscribe special_use = \Sent } mailbox Spam { auto = subscribe special_use = \Junk } mailbox Trash { auto = subscribe special_use = \Trash } prefix = } passdb { args = * driver = pam } plugin { sieve = file:~/sieve;active=~/.dovecot.sieve sieve_before = /var/lib/dovecot/sieve/default.sieve sieve_default = /var/lib/dovecot/sieve/default.sieve sieve_extensions = +notify +imapflags +vacation-seconds sieve_vacation_default_period = 1d sieve_vacation_min_period = 500s sieve_vacation_use_original_recipient = yes } postmaster_address = postmaster(a)mydomain.com protocols = imap lmtp sieve service auth { unix_listener auth-userdb { group = mode = 0777 user = } } service lmtp { inet_listener lmtp { address = 127.0.0.1 port = 10024 } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl_cert = </etc/ssl/dovecot/server.pem ssl_key = </etc/ssl/dovecot/server.key submission_host = localhost userdb { driver = passwd override_fields = home=/srv/mail/%n } protocol lmtp { mail_plugins = sieve } protocol lda { mail_plugins = sieve } I've changed the identifying info to stop any spammers. Any ideas, suggestions or just another pair of eyes telling me I've done something stupid would be much appreciated. Many thanks David

1 0

[Dovecot] Plugins: virtuals vs acls
by Leho Kraav 20 Sep '16

20 Sep '16

Hi all dovecot-virtual: * all when dovecot-acl files restrict some subset of * for a user, does dovecot respect these ACLs when collecting messages for virtual folder? I'd like a confirmation about what I should be seeing when I start implementing this setup.

2 3

Dovecot and imapproxy
by Grant 20 Sep '16

20 Sep '16

imapproxy sped things up a lot for me when I was using courier. I switched to dovecot a while back and kept using imapproxy. Lately I've been noticing weird TCP Queuing spikes in my munin graphs and discontinuing my use of imapproxy seems to have smoothed them out completely and I haven't noticed a slowdown in webmail. Is imapproxy generally not necessary with dovecot? - Grant

2 1

Re: Dovecot 2.2.25 fails on SSL
by Joseph Tam 19 Sep '16

19 Sep '16

"Andreas M. Kirchwitz" <amk(a)spamfence.net> writes: >> OK, the origin of your problem becomes clearer. You can hardcode these >> paths into the executables by doing something like >> >> env CFLAGS='-I/my'ssl/include' \ >> LDFLAGS='-L/your/ssl/lib -Wl,-rpath,/my/ssl/lib' \ >> configure ... > > Based on your mail I've tried CFLAGS/LDFLAGS again, and > now Dovecot didn't even compile any longer. I don't use the same OS as you, but what errors dis you get? Joseph Tam <jtam.home(a)gmail.com>

1 0

Panic: file auth-request.c
by Chris Wik 19 Sep '16

19 Sep '16

Hello Dovecot list, We've been running a really old CentOS 5 server with the stock dovecot from yum (1.0.7) for years and years with absolutely no problems. If it ain't broke, don't fix it, or something like that. Well it finally broke, but only due to the server no longer being able to handle the load of the increasing user base (many thousands now, with hundreds of concurrent IMAP connections any any given time) So we upgraded to a new CentOS 7 server with SSD RAID, fast CPUs and tons of RAM. No more load problems. We compiled the latest dovecot from source (as the version from CentOS yum repo is already quite old, figure we might as well run the latest version since we were upgrading anyway). Thanks to excellent documentation on dovecot.org and fairly thorough testing, the upgrade was quite smooth. We kept all the message UUIDs intact and tried to match the supported authentication methods etc to the old setup, and we didn't have any problems with clients re-downloading or re-syncing mail. We do however have one problem, which prompted me to join this list. It is the same problem as described in this thread from last month: http://dovecot.org/list/dovecot/2016-July/104899.html Here's the excerpt from our maillog: Sep 17 19:34:57 mail dovecot: auth: Panic: file auth-request.c: line 1049 (auth_request_lookup_credentials): assertion failed: (request->credentials_scheme == scheme) Sep 17 19:34:57 mail dovecot: auth: Error: Raw backtrace: /usr/local/lib/dovecot/libdovecot.so.0(+0x89470) [0x7fa9cb8af470] -> /usr/local/lib/dovecot/libdovecot.so.0(+0x8954e) [0x7fa9cb8af54e] -> /usr/local/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fa9cb851f75] -> dovecot/auth() [0x4165bc] -> dovecot/auth() [0x4221fb] -> dovecot/auth() [0x41620b] -> dovecot/auth(auth_request_lookup_credentials_callback+0x58) [0x4162f8] -> dovecot/auth(passdb_handle_credentials+0x6a) [0x4254ba] -> dovecot/auth() [0x425b62] -> dovecot/auth() [0x41c1f8] -> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7fa9cb8c207c] -> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xd7) [0x7fa9cb8c3377] -> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7fa9cb8c2105] -> /usr/local/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7fa9cb8c22b8] -> /usr/local/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7fa9cb857f33] -> dovecot/auth(main+0x2eb) [0x40ccdb] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x7fa9c9dc2b15] -> dovecot/auth() [0x40cf15] On the client side, it manifests as an authentication failure, and the user is prompted to re-enter their password. The reports we've had are all from users who have their passwords saved in a local password manager, so the client is definitely sending the correct password. It's not related to a particular mail client. It is also definitely not related to the particular user or password, as the user will authenticate many times successfully and then (seemingly) randomly be hit by this bug and prompted to re-enter their password. We enabled verbose logging and even logging of passwords for failed authentication attempts in an attempt to find a pattern, but so far we have not found one. Similar to the original poster in the above thread, we are using a MySQL backend, and CentOS 7 on x86_64 It happens quite frequently: in the past 6 days it happened 49175 times, according to a grep of the maillog. In the same period there were 294167 successful IMAP logins and 160322 POP3 logins. For now we have downgraded to 2.2.4 and so far have not seen the crash recorded in the maillog. What can we do to help track down and fix this bug? # dovecot -n # 2.2.24 (a82c823): /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.10.0-327.28.3.el7.x86_64 x86_64 CentOS Linux release 7.2.1511 (Core) ext4 auth_debug = yes auth_debug_passwords = yes auth_mechanisms = plain login digest-md5 cram-md5 ntlm rpa apop auth_verbose = yes auth_verbose_passwords = plain debug_log_path = /var/log/dovecot-debug.log default_client_limit = 5000 default_process_limit = 1000 disable_plaintext_auth = no first_valid_uid = 89 mail_debug = yes mail_fsync = never mail_gid = 89 mail_location = maildir:/var/virtual/%d/%n mail_uid = 89 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 = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } pop3_client_workarounds = outlook-no-nuls oe-ns-eoh service auth { unix_listener /var/spool/postfix/private/auth { group = postfix mode = 0660 user = postfix } } ssl_ca = <*** ssl_cert = <*** ssl_key = <*** userdb { args = /usr/local/etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_ssl = yes protocol lmtp { mail_fsync = optimized } protocol lda { mail_fsync = optimized } protocol imap { mail_max_userip_connections = 50 } protocol pop3 { mail_max_userip_connections = 20 } -- Chris Wik Anu Internet Services www.anu.net | www.cwik.ch

3 5

dovecot --hostdomain
by dovecot＠nspace.de 19 Sep '16

19 Sep '16

Hi, I'm currently debugging replication issues and I found that both servers answer to a "dovecot --hostdomain" simply with localhost From what I've read, this can lead to problems. Where do I configure the dovecot hostdomain name? The machine itself has a valid name in /etc/hostname Thanks, Thomas

2 1

Re: Dovecot 2.2.25 fails on SSL
by Andreas M. Kirchwitz 19 Sep '16

19 Sep '16

Joseph Tam <jtam.home(a)gmail.com> wrote: >> For every program I compile myself, I link it against my custom >> OpenSSL library (always newest version; distributions usually tend >> to stick with a specific version and only apply security fixes). > > OK, the origin of your problem becomes clearer. You can hardcode these > paths into the executables by doing something like > > env CFLAGS='-I/my'ssl/include' \ > LDFLAGS='-L/your/ssl/lib -Wl,-rpath,/my/ssl/lib' \ > configure ... Yes, exactly, that's my usual approach. I've used this as well for building other software with custom libraries. Unfortunately, I remember CFLAGS/LDFLAGS didn't play well with Dovecot, so I used SSL_CFLAGS/SSL_LIBS as suggested by the documentation and that worked well. > I use this myself (except the -Wl part since these libs are > symlinked to my shared library path). I think "-R/my/ssl/lib" > might also be synonymous with -Wl,... Based on your mail I've tried CFLAGS/LDFLAGS again, and now Dovecot didn't even compile any longer. I was close to giving up. But obviously, I didn't ... :-) After some investigation I found the non-default linker option "-Wl,--as-needed" as problem which is enabled by Dovecot for unknown reasons. Finally, this call to "configure" generates proper Makefile files to build Dovecot with a custom SSL library: env CPPFLAGS="-I/usr/local/ssl/include" LDFLAGS="-L/usr/local/ssl/lib -Wl,-R/usr/local/ssl/lib" LIBS="-Wl,--no-as-needed -lcrypto -lssl" SSL_CFLAGS="-I/usr/local/ssl/include" SSL_LIBS="-L/usr/local/ssl/lib -Wl,-R/usr/local/ssl/lib -Wl,--no-as-needed -lcrypto -lssl" ./configure --prefix=/usr/local/dovecot --with-ssl=openssl (chances are that SSL_CFLAGS/SSL_LIBS could be removed completely but it won't hurt) I've read the section in the "ld" manual but still don't understand why Dovecot enables --as-needed (never seen that before with other software) and why it's such a big problem. But I'm no expert here. > I don't have that problem -- I use configure to tell dovecot where to find > my self-compiled openssl, and the resulting executables load from where I > want. Thanks for pointing me at the proper direction again. Now Dovecot 2.2.25 compiles for me with a custom SSL. I understand that this issue might not have a high priority but maybe one of the developers could check if "--as-needed" is really needed (as it confuses people who try to use custom libraries) and what's the deeper meaning of SSL_CFLAGS/SSL_LIBS. My system is a regular CentOS 6 (latest sub-release with all patches), nothing special except for a custom SSL installation. Greetings, Andreas

1 0

BUG - DELETE Public/Folder not working with Thunderbird
by Leander Schäfer 18 Sep '16

18 Sep '16

Hi, Unfortunately it looks like the parameter: "imap_client_workarounds = tb-extra-mailbox-sep" does not work. Neither inside nor outside "protocol imap {}" configuration section. ACLs are set correctly. Manual "DELETE Public/Test" via telnet is working as expected. Is this a known bug? See: - https://help.ubuntu.com/community/Dovecot#Thunderbird - http://wiki.dovecot.org/Clients#Thunderbird # 2.2.25 (7be1766): /usr/local/etc/dovecot/dovecot.conf # Pigeonhole version 0.4.15 (97b3da0) # OS: FreeBSD 10.3-RELEASE amd64 [...] imap_client_workarounds = delay-newmail tb-extra-mailbox-sep tb-lsub-flags [...] namespace { list = children location = maildir:%%h/maildir:INDEX=~/maildir/Shared/%%u:CONTROL=~/maildir/Shared/%%u:INDEXPVT=~/maildir/Shared prefix = Shared/%%u/ separator = / subscriptions = no type = shared } namespace { hidden = no list = children location = maildir:~/../Public:LAYOUT=fs:INDEX=~/../Public:CONTROL=~/../Public:INDEXPVT=~/maildir/Public prefix = Public/ separator = / subscriptions = no type = public } [...] Best regards Leander Schäfer

2 4

how to mass delete after a hacked mail?
by voytek＠sbt.net.au 17 Sep '16

17 Sep '16

I had a hacked user account resulting in several thousand bounces back to that email inbox, account now corrected, but, how can I mass delete bounces with say subject like: "Undelivered Mail Returned to Sender" (by from ? ""Mail Delivery System" <MAILER-DAEMON(a)emu.sbt.net.au>") or what other ways to clean the mess ? thanks, V

4 3

converting maildir to mailbox
by Anton Yuzhaninov 16 Sep '16

16 Sep '16

Hi all! There is a script to convert maildir to mailbox in wiki: http://wiki.dovecot.org/Migration/MailFormat but it doesn't convert any message flags (seen e.t.c.). I wrote a script, which converts most flags and labels: https://bitbucket.org/citrin/scripts/src/tip/dovecot-maildir2mbox.pl It doesn't convert recent flag and UIDs though, because it was not necessary in my case. Do you think link to the script should be added to dovecot wiki? -- WBR, Anton Yuzhaninov P. S. My use case was: get maildir from other server, convert to mbox, compress (gzip -9) and add to my mailbox as read-only archive.

3 2

Crash with latest -git as of 2.2.devel (c06590c)
by Reuben Farrelly 16 Sep '16

16 Sep '16

Hi, Looks like something has been committed to master-2.2 in the last week which is causing crashes as soon as the remote user logs in: Sep 17 01:11:19 thunderstorm.reub.net dovecot: dsync-server(reuben): Error: read(lightning.reub.net) failed: EOF (last sent=mailbox_state, last recv=mail (EOL)) Sep 17 01:11:31 thunderstorm.reub.net dovecot: imap(reuben): Panic: file fts-api.c: line 128 (fts_backend_set_cur_mailbox): assertion failed: (ctx->cur_box != NULL) Sep 17 01:11:31 thunderstorm.reub.net dovecot: imap(reuben): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0xb7f9f) [0x7f4cd5b4cf9f] -> /usr/lib64/dovecot/libdovecot.so.0(+0xb9515) [0x7f4cd5b4e515] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f4cd5b4d332] -> /usr/lib64/dovecot/lib20_fts_plugin.so(+0x96b4) [0x7f4cd50b86b4] -> /usr/lib64/dovecot/lib20_fts_plugin.so(fts_backend_update_deinit+0x45) [0x7f4cd50b872b] -> /usr/lib64/dovecot/lib20_fts_plugin.so(+0x142ed) [0x7f4cd50c32ed] -> /usr/lib64/dovecot/libdovecot-storage.so.0(maildir_sync_index+0x98e) [0x7f4cd5e4eed7] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x5f209) [0x7f4cd5e51209] -> /usr/lib64/dovecot/libdovecot-storage.so.0(+0x5f497) [0x7f4cd5e51497] -> /usr/lib64/dovecot/libdovecot-storage.so.0(maildir_storage_sync_init+0xb2) [0x7f4cd5e517de] -> /usr/lib64/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x6d) [0x7f4cd5e2cc41] -> dovecot/imap(imap_sync_init+0xc7) [0x42e408] -> dovecot/imap() [0x42f96b] -> dovecot/imap() [0x42febc] -> dovecot/imap(cmd_sync_delayed+0x34) [0x42fef2] -> dovecot/imap(client_handle_input+0x138) [0x41e9d1] -> dovecot/imap(client_input+0xf5) [0x41eb02] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0xcd) [0x7f4cd5b6b054] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x209) [0x7f4cd5b6d5c1] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x24) [0x7f4cd5b6b1fd] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0xaf) [0x7f4cd5b6b149] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x2e) [0x7f4cd5aca603] -> dovecot/imap(main+0x300) [0x431169] -> /lib64/libc.so.6(__libc_start_main+0xf0) [0x7f4cd571c710] -> dovecot/imap(_start+0x29) [0x40c7b9] Sep 17 01:11:31 thunderstorm.reub.net dovecot: imap(reuben): Fatal: master: service(imap): child 1740 killed with signal 6 (core dumped) thunderstorm reuben # file core core: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from 'dovecot/imap postlogin', real uid: 0, effective uid: 0, real gid: 0, effective gid: 0, execfn: '/usr/libexec/dovecot/imap', platform: 'x86_64' thunderstorm reuben # gdb /usr/libexec/dovecot/imap core GNU gdb (Gentoo 7.11.1 vanilla) 7.11.1 Copyright (C) 2016 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <https://bugs.gentoo.org/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/libexec/dovecot/imap...done. [New LWP 1740] warning: Could not load shared library symbols for linux-vdso.so.1. Do you need "set solib-search-path" or "set sysroot"? [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib64/libthread_db.so.1". Core was generated by `dovecot/imap postlogin'. Program terminated with signal SIGABRT, Aborted. #0 0x00007f4cd572f1f8 in raise () from /lib64/libc.so.6 (gdb) bt full #0 0x00007f4cd572f1f8 in raise () from /lib64/libc.so.6 No symbol table info available. #1 0x00007f4cd573064a in abort () from /lib64/libc.so.6 No symbol table info available. #2 0x00007f4cd5b4cfee in default_fatal_finish (type=LOG_TYPE_PANIC, status=0) at failures.c:201 backtrace = 0x27446a0 "/usr/lib64/dovecot/libdovecot.so.0(+0xb7f9f) [0x7f4cd5b4cf9f] -> /usr/lib64/dovecot/libdovecot.so.0(+0xb9515) [0x7f4cd5b4e515] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f4cd5b4d332] -> /usr"... #3 0x00007f4cd5b4e515 in i_internal_fatal_handler (ctx=0x7fff509f3750, format=0x7f4cd50cb000 "file %s: line %d (%s): assertion failed: (%s)", args=0x7fff509f3770) at failures.c:670 status = 0 #4 0x00007f4cd5b4d332 in i_panic (format=0x7f4cd50cb000 "file %s: line %d (%s): assertion failed: (%s)") at failures.c:275 ctx = {type = LOG_TYPE_PANIC, exit_status = 0, timestamp = 0x0, timestamp_usecs = 0} args = <error reading variable args (Attempt to dereference a generic pointer.)> #5 0x00007f4cd50b86b4 in fts_backend_set_cur_mailbox (ctx=0x26f6e70) at fts-api.c:128 __FUNCTION__ = "fts_backend_set_cur_mailbox" #6 0x00007f4cd50b872b in fts_backend_update_deinit (_ctx=0x268b3b8) at fts-api.c:143 ctx = 0x26f6e70 backend = 0x26825e0 ret = 32588 #7 0x00007f4cd50c32ed in fts_mailbox_sync_notify (box=0x268aaa0, uid=0, sync_type=(unknown: 0)) at fts-storage.c:665 flist = 0x2683000 fbox = 0x268b258 #8 0x00007f4cd5e4eed7 in maildir_sync_index (ctx=0x268eb40, partial=true) at maildir-sync-index.c:649 mbox = 0x268aaa0 view = 0x26f4f30 view2 = 0x0 iter = 0x0 trans = 0x270ef20 hdr = 0x268b8b0 empty_hdr = {major_version = 176 '\260', minor_version = 57 '9', base_header_size = 20639, header_size = 32767, record_size = 3588796538, compat_flags = 76 'L', unused = "\177\000", indexid = 1352612272, flags = 32512, uid_validity = 40955680, next_uid = 0, messages_count = 40849200, unused_old_recent_messages_count = 0, seen_messages_count = 40857728, deleted_messages_count = 0, first_recent_uid = 136, first_unseen_uid_lowwater = 0, first_deleted_uid_lowwater = 40428608, log_file_seq = 0, log_file_tail_offset = 1352612384, log_file_head_offset = 32767, unused_old_sync_size = 139967982787820, unused_old_sync_stamp = 40913568, day_stamp = 0, day_first_uid = { 41174496, 0, 41174440, 0, 40413856, 0, 1352612384, 32767}} rec = 0x26d7188 seq = 0 seq2 = 0 uid = 1043 prev_uid = 1043 uflags = (MAILDIR_UIDLIST_REC_FLAG_MOVED | MAILDIR_UIDLIST_REC_FLAG_RECENT | MAILDIR_UIDLIST_REC_FLAG_NONSYNCED) filename = 0x2711a00 "1474037293.M664229P7078.thunderstorm,S=18760,W=19334:2,Sd" uid_validity = 1466133870 next_uid = 3585376580 hdr_next_uid = 1044 first_recent_uid = 1044 first_uid = 1 changes = 1 ret = 0 time_before_sync = 1474038691 expunged_guid_128 = "\247\332=\207\337[1\a\367\217\025\307\024|-Y" private_flags_mask = 0 expunged = true full_rescan = false __FUNCTION__ = "maildir_sync_index" #9 0x00007f4cd5e51209 in maildir_sync_context (ctx=0x27445a8, forced=false, find_uid=0x0, lost_files_r=0x7fff509f3afa) at maildir-sync.c:951 sync_flags = MAILDIR_UIDLIST_SYNC_PARTIAL flags = (MAILDIR_UIDLIST_REC_FLAG_NEW_DIR | MAILDIR_UIDLIST_REC_FLAG_MOVED | MAILDIR_UIDLIST_REC_FLAG_RECENT | MAILDIR_UIDLIST_REC_FLAG_NONSYNCED | MAILDIR_UIDLIST_REC_FLAG_RACING | unknown: 32736) new_changed = false cur_changed = false lock_failure = false fname = 0x268aaa0 "" why = (unknown: 0) ret = 1 __FUNCTION__ = "maildir_sync_context" #10 0x00007f4cd5e51497 in maildir_sync_run (mbox=0x268aaa0, flags=MAILBOX_SYNC_FLAG_EXPUNGE, force_resync=false, uid=0x0, lost_files_r=0x7fff509f3afa) at maildir-sync.c:1024 _data_stack_cur_id = 5 ctx = 0x27445a8 retry = false lost_files = false ret = 0 #11 0x00007f4cd5e517de in maildir_storage_sync_init (box=0x268aaa0, flags=MAILBOX_SYNC_FLAG_EXPUNGE) at maildir-sync.c:1097 mbox = 0x268aaa0 lost_files = false force_resync = false ret = 0 __FUNCTION__ = "maildir_storage_sync_init" #12 0x00007f4cd5e2cc41 in mailbox_sync_init (box=0x268aaa0, flags=MAILBOX_SYNC_FLAG_EXPUNGE) at mail-storage.c:1728 _data_stack_cur_id = 4 ctx = 0x0 #13 0x000000000042e408 in imap_sync_init (client=0x2687680, box=0x268aaa0, imap_flags=IMAP_SYNC_FLAG_SAFE, flags=MAILBOX_SYNC_FLAG_EXPUNGE) at imap-sync.c:229 ctx = 0x268b770 __FUNCTION__ = "imap_sync_init" #14 0x000000000042f96b in cmd_sync_client (sync_cmd=0x2688280) at imap-sync.c:737 client = 0x2687680 ctx = 0x2 flags = MAILBOX_SYNC_FLAG_EXPUNGE imap_flags = IMAP_SYNC_FLAG_SAFE no_newmail = false #15 0x000000000042febc in cmd_sync_delayed_real (client=0x2687680) at imap-sync.c:858 cmd = 0x2688280 first_expunge = 0x2688280 first_nonexpunge = 0x0 __FUNCTION__ = "cmd_sync_delayed_real" #16 0x000000000042fef2 in cmd_sync_delayed (client=0x2687680) at imap-sync.c:866 _data_stack_cur_id = 3 ret = 80 #17 0x000000000041e9d1 in client_handle_input (client=0x2687680) at imap-client.c:1118 ret = false remove_io = false handled_commands = true __FUNCTION__ = "client_handle_input" #18 0x000000000041eb02 in client_input (client=0x2687680) at imap-client.c:1149 cmd = 0x7fff509f3cc0 output = 0x26880a0 bytes = 28 __FUNCTION__ = "client_input" #19 0x00007f4cd5b6b054 in io_loop_call_io (io=0x268ca30) at ioloop.c:564 ioloop = 0x264f760 t_id = 2 __FUNCTION__ = "io_loop_call_io" #20 0x00007f4cd5b6d5c1 in io_loop_handler_run_internal (ioloop=0x264f760) at ioloop-epoll.c:220 ctx = 0x2651270 events = 0x26520a0 event = 0x26520a0 list = 0x26881d0 io = 0x268ca30 tv = {tv_sec = 256, tv_usec = 707889} events_count = 5 msecs = 256708 ret = 1 i = 0 j = 0 call = true __FUNCTION__ = "io_loop_handler_run_internal" #21 0x00007f4cd5b6b1fd in io_loop_handler_run (ioloop=0x264f760) at ioloop.c:612 No locals. #22 0x00007f4cd5b6b149 in io_loop_run (ioloop=0x264f760) at ioloop.c:588 __FUNCTION__ = "io_loop_run" #23 0x00007f4cd5aca603 in master_service_run (service=0x264f600, callback=0x430dd6 <client_connected>) at master-service.c:641 No locals. #24 0x0000000000431169 in main (argc=2, argv=0x264f390) at main.c:460 set_roots = {0x43bbe0 <imap_setting_parser_info>, 0x646340 <lda_setting_parser_info>, 0x0} login_set = {auth_socket_path = 0x2647048 "\001", postlogin_socket_path = 0x2647078 "z`\005", postlogin_timeout_secs = 60, callback = 0x430af0 <login_client_connected>, failure_callback = 0x430d41 <login_client_failed>, request_auth_token = 1} service_flags = MASTER_SERVICE_FLAG_KEEP_CONFIG_OPEN storage_service_flags = (MAIL_STORAGE_SERVICE_FLAG_DISALLOW_ROOT | MAIL_STORAGE_SERVICE_FLAG_AUTOEXPUNGE) username = 0x0 auth_socket_path = 0x43cd85 "auth-master" c = -1 (gdb) Reuben

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