November 2018 - dovecot

SELinux policy to allow Dovecot to connect to Mysql
by Robert Moskowitz 05 Feb '19

05 Feb '19

As I have noted in previous messages, I been getting the following on my new mailserver: Apr 7 10:17:27 z9m9z dovecot: dict: Error: mysql(localhost): Connect failed to database (postfix): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13) - waiting for 25 seconds before retry They go away when I setenforce 0. It is not a timing issue as I earlier thought. So I googled dovecot mysql selinux and the only worthwhile hit was: http://zszsit.blogspot.com/2012/12/dovecot-mysql-selinux-issue-on-centos6.h… that provides a /etc/selinux/dovecot2mysql.te and other selinux stuff. Is there a simpler way like a setsbool option? With all the howtos on dovecot with mysql, it is interesting that none of them seem to have this problem. Maybe because they connect to mysql through TCP port 3306 which has ITS set of problems (like MariaDB defaults to not listening on TCP). thanks!

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auth: Error - Request timed out
by Hajo Locke 01 Feb '19

01 Feb '19

Hello List, i use dovecot 2.2.22 and have the same problem described here: https://dovecot.org/pipermail/dovecot/2017-November/110020.html I can confirm that sometimes there is a problem with connection to mysql-db, but sometimes not. Reasons for failing are still under investigation by my mates. My current main problem is, that this fail seems to be a one way ticket for dovecot. Even if mysql is verifyable working again and waiting for connection dovecot stucks furthermore with errors like this: May 29 07:00:49 hostname dovecot: auth: Error: plain(mail(a)example.com,xxx.xxx.xx.xxx,<HGI4FVFt2Oy80j3P>): Request 999.7 timed out after 150 secs, state=1 When restarting dovecot all is immediately working again. Is there a way to tell dovecot to restart auth services or reinitialize mysql-connection after these hard fails? I could insert "idle_kill = 1 mins" into service auth and service auth-worker, but i dont know if this would work. Unfortunately i am not able to reproduce this error and there are always a couple of days between errors. Thanks, Hajo

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v2.3.4 released
by Timo Sirainen 30 Jan '19

30 Jan '19

https://dovecot.org/releases/2.3/dovecot-2.3.4.tar.gz https://dovecot.org/releases/2.3/dovecot-2.3.4.tar.gz.sig Binary packages in https://repo.dovecot.org/ * The default postmaster_address is now "postmaster@<user domain or server hostname>". If username contains the @domain part, that's used. If not, then the server's hostname is used. * "doveadm stats dump" now returns two decimals for the "avg" field. + Added push notification driver that uses a Lua script + Added new SQL, DNS and connection events. See https://wiki2.dovecot.org/Events + Added "doveadm mailbox cache purge" command. + Added events API support for Lua scripts + doveadm force-resync -f parameter performs "index fsck" while opening the index. This may be useful to fix some types of broken index files. This may become the default behavior in a later version. - director: Kicking a user crashes if login process is very slow - pop3_no_flag_updates=no: Don't expunge DELEted and RETRed messages unless QUIT is sent. - auth: Fix crypt() segfault with glibc-2.28+ - imap: Running UID FILTER script with errors assert-crashes - dsync, pop3-migration: POP3 UIDLs weren't added to dovecot.index.cache while mails were saved. - dict clients may have been using 100% CPU while waiting for dict server to finish commands. - doveadm user: Fixed user listing via HTTP API - All levels of Cassandra log messages were logged as Dovecot errors. - http/smtp client may have crashed after SSL handshake - Lua auth converted strings that looked like numbers into numbers.

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Request: Pigeonhole - strip CWFS from message-id logs
by Lee Maguire 20 Jan '19

20 Jan '19

Normally for a log line containing the contents of a Message-Id, it is logged like the following Nov 29 11:41:27 xxx dovecot[211]: lmtp(lee)<30167><XXXXX>: sieve: msgid=<xxxx(a)example.net>: stored mail into mailbox 'Notifications' However, if there is CFWS other than a space, it changes the format of the log line (potentially making the logs harder to process - eg via “logcheck" rules) Nov 29 11:50:09 xxx dovecot[401]: lmtp(lee)<55724><XXXXX>: sieve: msgid=? <xxxx(a)example.com>: stored mail into mailbox ‘Notifications' A message-id line broken up is valid per RFC 5322 and header whitespace shouldn’t be significant for logging purposes https://tools.ietf.org/html/rfc5322#section-3.6.4 https://tools.ietf.org/html/rfc5322#section-3.2.2

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panic when using dovecot master account
by André Rodier 20 Jan '19

20 Jan '19

Hello, I am running dovecot 2.2.34 (874deae), on Debian stable, from backports. I just tried the master account, and although everything worked in the email client, I had logs in the error logs: > imap(mirina): Panic: file mail-index-sync.c: line 413 > (mail_index_sync_begin_to2): assertion failed: (!index->syncing) > Nov 08 22:06:24 osaka dovecot[1450]: imap(mirina): Error: Raw > backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x9e412) [0x7f20ae813412] > -> /usr/lib/dovecot/libdovecot.so.0(+0x9e50d) [0x7f20ae81350d] -> > /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f20ae7a2c51] -> > /usr/lib/dovecot/libdovecot-storage.so.0(+0xe0fe4) [0x7f20aeb88fe4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_begin_to+0x4f) > [0x7f20aeb890bf] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mail_index_sync_begin+0x1c) > [0x7f20aeb8915c] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x218) > [0x7f20ad51f308] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_get_status+0x31) > [0x7f20aeb6bbf1] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(+0x936d) > [0x7f20ad51c36d] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa8771) > [0x7f20aeb50771] -> > /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xfd46) [0x7f20adb8bd46] > -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_get_status+0x31) > [0x7f20aeaf0781] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x10b8) > [0x7f20ad5201a8] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> > /usr/lib/dovecot/libdovecot-storage.so.0(index_storage_get_status+0x31) > [0x7f20aeb6bbf1] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(+0x936d) > [0x7f20ad51c36d] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa8771) > [0x7f20aeb50771] -> > /usr/lib/dovecot/modules/lib20_fts_plugin.so(+0xfd46) [0x7f20adb8bd46] > -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_get_status+0x31) > [0x7f20aeaf0781] -> > /usr/lib/dovecot/modules/lib20_virtual_plugin.so(virtual_storage_sync_init+0x10b8) > [0x7f20ad5201a8] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync_init+0x44) > [0x7f20aeaf02d4] -> > /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_sync+0x37) > [0x7f20aeaf0387] -> dovecot/imap(cmd_select_full+0x16b) > [0x557de970cc3b] -> dovecot/imap(command_exec+0x5c) [0x557de971444c] -> > dovecot/imap(+0x1a912) [0x557de9712912] > Nov 08 22:06:24 osaka dovecot[1450]: imap(mirina): Fatal: master: > service(imap): child 4289 killed with signal 6 (core dumps disabled) I attach my dovecot configuration too. Thanks for your help.

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Freebsd: Fatal error - Support not compiled in for passdb driver 'sql'
by Graham S. Jarvis 14 Jan '19

14 Jan '19

Hello, I have the following fatal error when I uncomment #!include auth-sql.conf.ext in .../conf.d/10-auth.conf dovecot: auth: Fatal: Support not compiled in for passdb driver 'sql' I have installed via 'pkg'. Do I have to install the ports tree to get sql support ? Thanks, -Graham-

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Dovecot Submission Proxy Auth
by Paul Hecker 12 Jan '19

12 Jan '19

Hi, Dovecot 2.3.1 (8e2f634). Could not get Dovecot to forward the (plain) authentication to the SMTP server using submission. Reason why I need it is sender spoofing (do not want my employees to send messages in behalf of me). In exim I can disable sender spoofing with the authenticated user. When sending through dovecot, exim either does not accept the email (need auth) or relay every sender address (because relaying from localhost). Am I missing a setting or do I need any additional field in the (MySQL) user_query/password_query to forward the password? You can find my config here: https://gist.github.com/lluuaapp/7daddf761131da47237b0f45e6bab5a8 Thanks, Paul

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RE: Dovecot (doveadm, ssl, sync) - SSL error
by Arkadiusz Majewski 08 Jan '19

08 Jan '19

Hello! dsync SSL still doesn't work for replication, so I've disabled it and tried to sync without. But I have a problem with temp directory. Is it possible to change path to temp folder? I don't want to set permissions but change temporary folder for replication. Thanks in advance. dovecot: doveadm: Error: safe_mkstemp(/tmp/dovecot.doveadm.) failed: Permission denied Arkadiusz Majewski From: Arkadiusz Majewski <majewsa(a)gmail.com> Sent: Sunday, December 3, 2017 7:38 PM To: 'dovecot(a)dovecot.org' <dovecot(a)dovecot.org> Subject: Dovecot (doveadm, ssl, sync) - SSL error Hello! I've got a problem to run syncing between both dovecot services on the separate servers. The error indicates to the problem with SSL. Directly using openssl command to connect from one server to other and vice versa is passed without any errors. OS: FreeBSD 11.1-RELEASE-p4 Dovecot: 2.2.33.2_2 and the older one dovecot-2.2.32.1_1 (or similar) - build by ports. OpenSSL: 1.0.2k-freebsd 26 Jan 2017 dovecot: doveadm(10.18.1.15): Error: doveadm client disconnected before handshake: SSL_accept() failed: error:140760FC:SSL routines:SSL23_GET_CLIENT_HELLO:unknown protocol dovecot.conf (on both servers): mail_plugins = $mail_plugins notify replication service replicator { process_min_avail = 1 } service aggregator { fifo_listener replication-notify-fifo { user = dovecot } unix_listener replication-notify { user = dovecot } } service replicator { unix_listener replicator-doveadm { mode = 0600 } } replication_max_conns = 10 service doveadm { inet_listener { port = 12130 ssl = yes } } ssl = required ssl_protocols = SSLv3 TLSv1 TLSv1.1 TLSv1.2 ssl_cert = </usr/local/etc/dovecot/ssl/cert.crt ssl_key = </usr/local/etc/dovecot/ssl/cert.key ssl_client_ca_file = </usr/local/etc/dovecot/ssl/ca.pem ssl_client_ca_dir = /usr/local/etc/dovecot/ssl Thank you in advance for any help. Kind Regards, Arkadiusz Majewski

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outlook idiocy - IMAP folders with /
by Wojciech Puchar 20 Dec '18

20 Dec '18

user attempts to create folders with / dovecot naturally cannot create it so it returns error but outlook of course "create" it and keep data in local store only. data is lost when you remove local store .pst file. The question is - can dovecot be configured so it will automatically replace slash in name with something else?

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Log sync error
by Jakobus Schürz 11 Dec '18

11 Dec '18

Hi there! I get a lot of errormessages. My dovecot is: dovecot-core 2:2.3.2.1-1~stretch from Debian stable. I found this: https://www.dovecot.org/list/dovecot/2013-July/091648.html So the bug came back... The Log is attached Thanks Jakob

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