August 2016 - dovecot

2.2.25 dumps core with "Panic: file imap-client.c: line 837 (client_check_command_hangs): assertion failed: (client->io != NULL)"
by Piper Andreas 30 Aug '16

30 Aug '16

Hello, Dovecot 2.2.25 OS: Solaris 11 (SunOS 5.11 11.3 i86pc i386 i86pc) Virtualization: VMware Filesystem: ZFS active users: ~4000 About once a day Dovecot crashes with "Panic: file imap-client.c: line 837 (client_check_command_hangs): assertion failed: (client->io != NULL)" The log shows in each case: Aug 29 12:59:00 surz113 dovecot: [ID 583609 mail.crit] imap(username): Panic: file imap-client.c: line 837 (client_check_command_hangs): assertion failed: (client->io != NULL) Aug 29 12:59:00 surz113 dovecot: [ID 583609 mail.error] imap(username): Error: Raw backtrace: 0xffff80ffb6f3d88d -> 0xffff80ffb6f6ae82 -> 0x41eba0 -> 0x41ecf3 -> 0xffff80ffb6f5d248 -> 0xffff80ffb6f50d2f -> 0xffff80ffb6f519e0 -> 0xffff80ffb6f50dce -> 0xffff80ffb6f50f90 -> 0xffff80ffb6ee3ebb -> 0x42f169 -> 0x41292c Aug 29 12:59:00 surz113 dovecot: [ID 583609 mail.crit] imap(username): Fatal: master: service(imap): child 1461 killed with signal 6 (core not dumped - set service imap { drop_priv_before_exec=yes }) It happens with different users, all with mailbox-sizes of 9 to 17 GByte. The server stops completely for all users with this Panic and is then restarted automatically from Solaris Service Management. Find attached the output of 'doveconf -n'. Please let me know, if you need any more infos. Thanks for any help on this issue, Andreas, postmaster(a)uni-marburg.de

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Re: Automatic purging of old email in all mailboxes
by Joseph Tam 30 Aug '16

30 Aug '16

"Scott W. Sander" <scottwsx96(a)gmail.com> writes: > A few of the mailboxes in Dovecot receive hundreds of emails per day. I'd > like to automatically remove all emails in all mailboxes and mailbox > folders that were received more than 90 days prior to the received date. > As I'm a novice Dovecot administrator, I'm not exactly sure what the best > way to accomplish this is, but I've started looking at the "doveadm > expunge" command. I figure I could create a cron job that calls this > command with the -A switch and that has a search query that finds all > emails older than 90 days. That more of less what I do. doveadm expunge -A mailbox INBOX savedbefore 7d > Error: User listing returned failure > doveadm: Error: Failed to iterate through some users I think this may be avoided (or made into warnings) if you bracket all user UID ranges with first_valid_uid = {first user uid} last_valid_uid = {last user uid} Sean Greenslade <sean(a)seangreenslade.com> then writes: > Since you're using maildirs as the storage backend, it might be easier > to just write a small script in the language of your preference (bash, > python, perl, etc.) that walks the directory tree and deletes files > based on their mtime. The downside is that the Dovecot caches will be out of date. Perhaps follow this up with a "doveadm index ..." operation. Joseph Tam <jtam.home(a)gmail.com>

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Re: maildirsize not correct
by Aki Tuomi 29 Aug '16

29 Aug '16

Does it work if you do? ---Aki TuomiDovecot oy -------- Original message --------From: Kamil Madac <kamil.madac(a)gmail.com> Date: 26/08/2016 20:51 (GMT+02:00) To: Aki Tuomi <aki.tuomi(a)dovecot.fi> Cc: dovecot(a)dovecot.org Subject: Re: maildirsize not correct Hi Aki, No I do not use it. On Thu, Aug 25, 2016 at 7:32 AM, Aki Tuomi <aki.tuomi(a)dovecot.fi> wrote: Are you using quota_vsizes=yes? Aki On 24.08.2016 21:39, Kamil Madac wrote: > Thanks, but this is most probably different issue. My maildirsize is > computed incorrectly even if I delete it completely and let dovead > recompute it so expunging is not in the game. > > Is there any way how to track/debug the recomputation algorithm in dovecot? > > On Wed, Aug 24, 2016 at 12:02 AM, WJCarpenter <bill-dovecot(a)carpenter.org> > wrote: > >> A long shot, but here's how I experienced similar symptoms: >> http://www.dovecot.org/list/dovecot/2016-April/104091.html >> >> >> >> Kamil Madac wrote on 08/23/2016 02:02 PM: >> >>> Hi, >>> >>> One of my email accounts has 1,5gb of emails in INBOX, but maildirsize >>> shows only 528mb. 'du' also shows 1,5gb and there are 3809 files in cur >>> directory. >>> >>> When I use mailbox status a can see correct values: >>> >>> doveadm -f table mailbox status -u user(a)domain.sk "messages vsize" INBOX* >>> messages >>> vsize >>> >>> INBOX 3809 1521049349 >>> >>> but when I check the quotas with doveadm: >>> >>> doveadm quota get -u user(a)domain.sk >>> Quota name Type Value >>> Limit >>> % >>> User quota STORAGE 541391 >>> 2048000 >>> 26 >>> User quota MESSAGE 886 >>> - >>> 0 >>> >>> I tried to delete maildirsize, but it was recalculated again incorrectly. >>> >>> 2097152000S >>> 554384829 886 >>> >>> Dovecot version is 2.2.9 installed from packages on Ubuntu 14.04 >>> I have other accounts on server which are have no problems with >>> maildirsize >>> and quotas. Does anyone have same experience? >>> >>> Kamil >>> > -- Kamil Madac

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sieve-filter with duplicate-extension
by hendrik＠luecke-tieke.de 26 Aug '16

26 Aug '16

Hi, i have imported a mailbox twice (accentially). Now i thought, it might be a valid approach to simply use a custom sieve rule to mark duplicates using the attached ruleset I ran sieve-filter like this: ~# sieve-filter -e -W -v -C -u userxyz(a)example.com /var/vmail/example.com/userxyz/sieve/duplicates.sieve 'INBOX' But sieve-filter complains like this: info: msgid=<1231321313212312312312(a)p3enginer2.emv2.com>: left message in mailbox 'INBOX'. info: message kept in source mailbox. info: filtering: [Sun, 1 May 2011 16:41:46 +0100; 101297 bytes] `Cipo & Baxx, Nike Golf, Strenesse, al...'. roundcube2: line 3: warning: duplicate test: duplicate checking not available in this context. info: msgid=<1123123123123123(a)p3enginer3.emv2.com>: left message in mailbox 'INBOX'. info: message kept in source mailbox. info: filtering: [Sun, 28 Oct 2012 11:32:56 +0100; 1416 bytes] `DenyHosts Report for example.com'. roundcube2: line 3: warning: duplicate test: duplicate checking not available in this context. Is there a way, to refilter an existing mailbox and applying the duplicate extension? Many thanks and best regards, Hendrik

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quota-status service rejecting plus addressed recipients
by Robert Brooks 26 Aug '16

26 Aug '16

Hi, I have "recipient_delimiter = +" set in my Dovecot config, however the Dovecot quota-status service is rejecting with "Unknown user" plus addressed recipients. Talking to the policy server we have... # telnet localhost 12340 > Trying 127.0.0.1... > Connected to localhost. > Escape character is '^]'. > recipient=user(a)example.com > > action=OK > > recipient=user+foo(a)example.com > > action=REJECT Unknown user > I can mask the issue with "quota_status_nouser = DUNNO", but then over quota messages are not rejected when plus addressed. quota-status service config is... service quota-status { > executable = quota-status -p postfix > inet_listener { > address = localhost > port = 12340 > # You can choose any port you want > } > client_limit = 1 > } > Regards, Rob

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maildirsize not correct
by Kamil Madac 26 Aug '16

26 Aug '16

Hi, One of my email accounts has 1,5gb of emails in INBOX, but maildirsize shows only 528mb. 'du' also shows 1,5gb and there are 3809 files in cur directory. When I use mailbox status a can see correct values: doveadm -f table mailbox status -u user(a)domain.sk "messages vsize" INBOX* messages vsize INBOX 3809 1521049349 but when I check the quotas with doveadm: doveadm quota get -u user(a)domain.sk Quota name Type Value Limit % User quota STORAGE 541391 2048000 26 User quota MESSAGE 886 - 0 I tried to delete maildirsize, but it was recalculated again incorrectly. 2097152000S 554384829 886 Dovecot version is 2.2.9 installed from packages on Ubuntu 14.04 I have other accounts on server which are have no problems with maildirsize and quotas. Does anyone have same experience? Kamil

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Help setting up IMAP account in Outlook 2016
by Spiro Angeli 26 Aug '16

26 Aug '16

Hi, I need help setting up properly mail clients for my email accounts running on dovecot ver 2.2.18 on CentOS release 6.8 (Final) in italian. I posted a forum thread where you can get all detail info: this for better reading. Forum thread subject: Help setting up IMAP account in Outlook 2016 Forum link: http://www.emailquestions.com/threads/help-setting-up-imap-account-in-outloo k-2016.13439 I was advised to " ask dovecot list for help with the IMAP server. " Thank you, Spiro

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lazy_expunge and public folder
by Arne Hoffmann 26 Aug '16

26 Aug '16

Hi all, I stumbled upon the lazy_expunge plugin and thought that it might be useful in some cases. It works fine if I delete mails from my inbox. But it doesn't do anything if I deleted mails from a public folder (and for the server I am currently working on the public folder is _the_ _main_ _feature_). Does lazy_expunge not work with public folders? Or am I using it wrong? root@imap01 [~]# doveconf -n # 2.2.24 (a82c823): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.13 (7b14904) # OS: Linux 3.16.0-4-amd64 x86_64 Debian 8.5 ext4 auth_debug = yes auth_debug_passwords = yes debug_log_path = /var/log/mail.debug disable_plaintext_auth = no doveadm_password = # hidden, use -P to show it doveadm_port = 22001 mail_debug = yes mail_location = maildir:/var/mail/vmail/%d/%n/Maildir:INBOX=/var/mail/vmail/%d/%n/Maildir mail_plugins = " listescape lazy_expunge notify replication" mail_privileged_group = vmail namespace { location = maildir:/var/mail/vmail/Öffentliche Ordner:INDEXPVT=~/Maildir/Öffentliche Ordner mailbox "Gelöschte Elemente" { auto = subscribe special_use = \Trash } mailbox MirrorServer-Projekt { auto = subscribe } prefix = Öffentliche Ordner/ separator = / subscriptions = no type = public } namespace { hidden = yes list = no location = maildir:~/Maildir/expunged prefix = .EXPUNGED/ separator = / } namespace inbox { inbox = yes location = prefix = separator = / type = private } passdb { args = /etc/dovecot/mysql.conf driver = sql } plugin { lazy_expunge = .EXPUNGED/ mail_replica = tcps:imap02.example.com } protocols = imap service aggregator { fifo_listener replication-notify-fifo { user = vmail } unix_listener replication-notify { user = vmail } } service doveadm { inet_listener { port = 22001 ssl = yes } } service replicator { process_min_avail = 1 unix_listener replicator-doveadm { group = vmail mode = 0660 } } ssl = required ssl_ca = </etc/ssl/os/cert-sub-ca1-and-root-ca.pem ssl_cert = </etc/ssl/os/cert-imap01-example.com.pem ssl_client_ca_file = /etc/ssl/os/cert-all.pem ssl_client_cert = </etc/ssl/os/cert-imap01-example.com.pem ssl_client_key = </etc/ssl/os/key-imap01-example.com.pem ssl_key = </etc/ssl/os/key-imap01-example.com.pem ssl_require_crl = no userdb { args = /etc/dovecot/mysql.conf driver = sql } root@imap01 [~]#

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Allow selection of safe curves in dovecot
by Ruga 26 Aug '16

26 Aug '16

http://safecurves.cr.yp.to

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Change dovecot hostname
by Scott W. Sander 25 Aug '16

25 Aug '16

I have noticed that the name of my private server running dovecot appears in email headers rather than the public-friendly name of my server. Is there a method to specify an alternate server name for the dovecot server to use for itself in the dovecot configuration files? I performed a few Google searches and was not able to find the answer to my question. ------- user@server1:~$ dovecot --version 2.2.9 user@server1:~$ dovecot -n # 2.2.9: /etc/dovecot/dovecot.conf # OS: Linux 3.16.0-77-generic x86_64 Ubuntu 14.04.4 LTS ext4 auth_mechanisms = plain login info_log_path = /var/log/dovecot.log log_path = /var/log/dovecot.log mail_location = maildir:/var/mail/vhosts/%d/%n namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = scheme=PLAIN username_format=%u /etc/dovecot/dovecot-users driver = passwd-file } protocols = " imap lmtp pop3" 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 } } service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0600 user = postfix } } service pop3-login { inet_listener pop3s { port = 995 ssl = yes } } ssl = required ssl_cert = </etc/ssl/certs/server1_combined.pem ssl_key = </etc/ssl/private/server1_key.pem userdb { args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n driver = static }

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