November 2011 - dovecot

[Dovecot] Dovecot v2.0.13 unix_listeners
by Matthew Brown 13 Nov '11

13 Nov '11

Could somebody be able to explain to me what the various unix_listeners do in the Dovecot 2.x configuration (specifically in 10-master.conf). Currently, for postfix to use for local delivery, I have: service lmtp { unix_listener /var/spool/postfix/private/dovecot-lmtp { group = postfix mode = 0660 user = postfix } } and for auth I have: service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { mode = 0666 user = vmail } } So what does each one specifically do? Also, does somebody know of a resource that can explain the mode setting? I couldn't seem to find anything on the wiki.. Sorry if these questions seem simple, Im still trying to get a grips with dovecots workings. MDA: Dovecot v2.0.13 MTA: SMTP User & Virtual Domain Management: MySQL Cheers, Matthew

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[Dovecot] TLS Authentication Confusion
by Carlos Mennens 11 Nov '11

11 Nov '11

I asked a user today to make sure his incoming and outgoing email was using TLS. He told me it wasn't possible because my Dovecot / Postfix daemons were only listening on TCP 25 & 143 according to a port scan he did. He told me the only way I could enable encrypted secure sessions between the client & server is to enable port 993 (IMAPs). I told him that TLS is supported on my mail server over the default ports TCP 25 / 143 and that many consider IMAPs to be legacy. I sent him a telnet session of my PC communicating with my server & it shows TLS is available. I just wanted to be sure I was correct with the information above or am I completely wrong and I do indeed need TCP port 993? I know this is the Dovecot mailing list but since Dovecot and Postfix both use and support TLS in their configuration files, I figured I would ask here for your help! carloss@pc1:~$ telnet mail.holyghost.org 25 Trying 192.168.4.100... Connected to mail.holyghost.org. Escape character is '^]'. 220 mail.holyghost.org ESMTP Postfix EHLO pc1.holyghost.org 250-mail.holyghost.org 250-PIPELINING 250-SIZE 20480000 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN Below is a snip from my mail logs showing TLS: Nov 9 10:26:39 mail dovecot: imap-login: Login: user=<carlos>, method=PLAIN, rip=::ffff:192.168.4.100, lip=::ffff:192.168.4.100, TLS The above snip from my log means that I'm connecting to Dovecot via TLS, correct?

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[Dovecot] Restarting dovecot periodically fails with "Socket already exists: /var/run/dovecot/anvil"
by James Page 11 Nov '11

11 Nov '11

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Hello restarting dovecot regularly fails with version 2.0.13 on Ubuntu 11.10 due to a running child process exiting after the main dovecot process. Oct 13 15:04:58 ubuntu dovecot: master: Error: service(anvil): Socket already exists: /var/run/dovecot/anvil Oct 13 15:04:58 ubuntu dovecot: master: Error: service(anvil): Socket already exists: /var/run/dovecot/anvil-auth-penalty Oct 13 15:04:58 ubuntu dovecot: master: Fatal: Failed to start listeners Oct 13 15:04:58 ubuntu kernel: [11132.825253] init: dovecot main process (8668) terminated with status 89 The dovecot/anvil process appears to be the cause of the problem (snapshot of running dovecot processes just after main dovecot process stops): root 8418 8080 0 15:02 pts/0 00:00:00 stop dovecot root 8419 1 0 15:02 ? 00:00:00 dovecot/anvil root 8422 8420 0 15:02 ? 00:00:00 grep dovecot This is an Ubuntu specific issue as we use upstart to manage dovecot which monitors the status of the main dovecot process; the Debian init script appears to make provision for this happening. I can work around this in the upstart configuration but it does look like a potential bug in the sub-process handling in dovecot. Any help much appreciated - please feel free to comment on https://bugs.launchpad.net/ubuntu/+source/dovecot/+bug/873390 as well. Regards - -- James Page Ubuntu Core Developer - ----------------------------------- dovecot -n # 2.0.13: /etc/dovecot/dovecot.conf # OS: Linux 3.0.0-12-generic-pae i686 Ubuntu 11.10 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 passdb { driver = pam } plugin { sieve = ~/.dovecot.sieve sieve_dir = ~/sieve } protocols = imap pop3 sieve ssl_cert = </etc/ssl/certs/dovecot.pem ssl_cipher_list = ALL:!LOW:!SSLv2:ALL:!aNULL:!ADH:!eNULL:!EXP:RC4+RSA:+HIGH:+MEDIUM ssl_key = </etc/ssl/private/dovecot.pem userdb { driver = passwd } protocol imap { imap_client_workarounds = delay-newmail mail_max_userip_connections = 10 } protocol pop3 { mail_max_userip_connections = 10 pop3_client_workarounds = outlook-no-nuls oe-ns-eoh } protocol lda { deliver_log_format = msgid=%m: %$ mail_plugins = sieve postmaster_address = postmaster quota_full_tempfail = yes rejection_reason = Your message to <%t> was automatically rejected:%n%r } -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBCAAGBQJOlwAJAAoJEL/srsug59jD1e4QAIB0/OhBhgr7HYqJNh3d1f69 8vGl6LSb2jjJb6bI+GX8QRHDDHXs6g3RadpHTEnDngJPLRPJxnnmr/mqcG+sAeYa 92shRyWnZQFEHJkl9hE1t1OS7skpLezWgSl6nOtzkRxm3yB0+w81PyQZVH2QArKf dATww3t0hMd3ybPEJnZwSlIQ/82i79qd8RZd1orERdIKN1wIyhb2uOi1XXBvGHZo hZKhO1sv3vz1RLpJXeWIVUNK8RQHJcvAOdqvTeT7kzx1gdxy3ycr7WOTUFY3Nc83 SYFyV9/miSNc45n+eDnsoknwggn0JWMkMA1jzRQz9OGCWFkJVFIuOE9jwJcFP6HY +8OnWwgdu5qNQ6nrn4+M1dB1MrFV5aFQmSuXsuAFXkCYywajdVhNyTkC8wERUBf1 NMv4PQRP0tA/UOOy9qNnNf9y3kQ1ItJ5ZhBTOO5WctnowYHDTWtnoxD7m0aEM1rA NH1TFolUgeiT6B9xFcreq42qEVYItKV60o2gv8fMDXwtkSjfDfJ2/88/45dcTOuK t+qUZnpI+AgCak7AfYShj1SjYN80BbpPpQ0WtG6MObXBZZl84paNpAUibUfN0tPy cEscYqUhkkptbfenJe3ldz0S2AhlrDTFk3cWGKwwlKY+29vBsoZtbgIamgrOKLX9 AbdvqFx8gnYe5af1k3eL =6Mfk -----END PGP SIGNATURE-----

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[Dovecot] undefined symbol: o_stream_switch_ioloop
by Frank Elsner 11 Nov '11

11 Nov '11

Hi, running dovecot-2.0.14 under Fedora 14 with kernel 2.6.35.14-103.fc14.i686.PA I've found a strange error in log which I've nerver observed before when startung dovecot: auth-worker: Error: dlopen(/usr/local/dovecot/lib/dovecot/auth/libauthdb_imap.so) failed: /usr/local/dovecot/lib/dovecot/auth/libauthdb_imap.so: undefined symbol: o_stream_switch_ioloop Dovecot seems to work normal despite the error message. Any enlightment welcome. --Frank Elsner

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[Dovecot] LDAP expired password
by roberto palmarin 10 Nov '11

10 Nov '11

hi all, I'm using postfix, LDAP, dovecot and horde for webmail. user and password information is stored in LDAP. I'm attempting to get password aging working properly and am not having much luck. even if password has expired user can login, can i tell dovecot to control the LDAP field shadowexpired? or is there some other way to check properly that the password is expired before allowing the user log in? thank's /roby

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[Dovecot] patching dovecot for sieve/managesieve support, centos 5.6?
by Scott Lewis 10 Nov '11

10 Nov '11

Hi all, I am having real trouble when attempting to patch dovecot 1.2 to include the Pidgeonhole sieve support on my CentOS 5.6 x64 mail server. I am relatively new to the programming side of linux, but I am not having a lot of luck when trying to get this thing to compile. Here's what happens: [root@mail ~]# whereis dovecot dovecot: /usr/sbin/dovecot /etc/dovecot.conf /usr/lib/dovecot /usr/libexec/dovecot /usr/share/man/man8/dovecot.8.gz [root@mail dovecot-1.2-sieve-0.1.19]# ./configure --with-dovecot=/usr/lib/dovecot ... checking whether to build static libraries... yes dovecot-config not found from /usr/lib/dovecot, use --with-dovecot=PATH to give path to compiled Dovecot sources or to a directory with the installed dovecot-config file. configure: error: dovecot-config not found -- I get this message regardless of whether I set --with-dovecot as /usr/sbin/dovecot, or /etc, or /usr/libexec/dovecot. I have SquirrelMail 1.4.22 running, and the avelsieve front-end seems happy enough. when I visit https://mail.mydomain.com/src/configtest.php, I get: Avelsieve plugin details: backend = ManageSieve ERROR: I could not determine the capabilities for Sieve Mail Filtering. Perhaps connectivity with ManageSieve server (if backend=Managesieve) is bad? thanks in advance!

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[Dovecot] Quota BUG ?
by Adrian M 10 Nov '11

10 Nov '11

Hello list, I believe I found a bug with quota. The dovecot quota replies with incorrect values when the mailbox is above 2GB. du -ks returns 2005764bytes dovecot IMAP on the same user/directory: 1 getquotaroot inbox * QUOTAROOT "INBOX" "user" * QUOTA "user" (STORAGE 1096 2000000)* QUOTAROOT "INBOX" "user" * QUOTA "user" (STORAGE 1096 2000000) 1 OK Getquotaroot completed. Is there any way to fix this ? --- linux system: dovecot 1.2.15-7 linux 2.6.32-5-amd64 dovecot.conf: dict { quotadict= mysql:/etc/dovecot/dovecot-dict-quota.conf } plugin { quota = dict:user::proxy::quotadict } dovecot-dict-quota.conf : user_query = SELECT '/home/%d/%n' as home, 'maildir:/home/%d/%n' as mail, 150 AS uid, 8 AS gid, CONCAT('*:bytes=', CAST(quota AS CHAR)) AS quota_rule FROM mailbox WHERE username = '%u' AND active = '1'

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[Dovecot] Exim thru through Dovecot deliver to spec IMAP-folder
by Alexander KIper 10 Nov '11

10 Nov '11

Hello All! How can I "post" some mails from Exim trnasport through Dovecot deliver to IMAP MailBox in specific folder (for example: "Junk")? -- With best regards, Alexander KIper!

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[Dovecot] Corrupted transaction log file
by Peter Mogensen 09 Nov '11

09 Nov '11

Hi, I'm experiencing a problem I need some pointers to debug. I'm running Dovecot 2.0.15 and have a client which keeps causing log-entries like: Nov 4 15:10:42 mail dovecot: imap (test(a)aaaone.net) Error: Corrupted transaction log file /mail/3340444/.TestMails/dovecot.index.log seq 2: indexid changed 1320419300 -> 1320419441 (sync_offset=0) Nov 4 15:10:42 mail dovecot: imap(test(a)aaaone.net): Error: Corrupted transaction log file /mail/3340444/.TestMails/dovecot.index.log seq 2: Invalid transaction log size (4476 vs 4360): /mail/3340444/. TestMails/dovecot.index.log (sync_offset=4476) Nov 4 15:10:42 mail dovecot: imap(test(a)aaaone.net): Disconnected: IMAP session state is inconsistent, please relogin. bytes=549/100474 The client issues a lot of IMAP connections like this: A1_0 LOGIN "test(a)aaaone.net" "password" A1_1 ENABLE QRESYNC CONDSTORE * OK Waiting for authentication process to respond.. * OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE STARTTLS AUTH=PLAIN] Dovecot ready. A1_0 OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE SORT SORT=DISPLAY THREAD=REFERENCES THREAD=REFS MULTIAPPEND UNSELECT CHILDREN NAMESPACE UIDPLUS LIST-EXTENDED I18NLEVEL=1 CONDSTORE QRESYNC ESEARCH ESORT SEARCHRES WITHIN CONTEXT=SEARCH LIST-STATUS] Logged in * ENABLED QRESYNC CONDSTORE A1_1 OK Enabled. A2_0 CREATE "INBOX.folder" A2_0 OK Create completed. A3_0 SUBSCRIBE "INBOX.folder" A3_0 OK Subscribe completed. A4_0 APPEND "INBOX.folder" ($CreatedByImapClient-test) {20487+} ... more similar appends. But it only seems to be reproducible, when there's another client involved. Starting up Thunderbird with a login to the account seems to be enough to cause this. (To my knowledge this causes a series of STATUS command and then IDLE). The installation is using Maildir and lock_method = fcntl on local disks. /Peter

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[Dovecot] Please advise on very fast search
by Alexander Chekalin 09 Nov '11

09 Nov '11

Hello, I try to create some kind of mail backup system. What I need is system that will store mail for the whole domain, and allow me to restore messages from/to specified email at that domain. The scheme is pretty simple: on our main mail server the SMTP server itself has a rule to send a copy of every message to 'backup(a)backupserver.host', and the backupserver.host domain is placed nearby on second server. The SMTP on second server do simple 'catchall' redirect of all messages to the single box. There is also a Dovecot that takes care for remote IMAP access to that box. And, finally, I've create some scripts to sort all messages in INBOX to folders named after message's date. So I have a lot of mailboxes inside the catchall box: INBOX 2011.11.03 2011.11.04 2011.11.05 2011.11.06 ...etc... and each folder holds messages for that day. Simply, and works perfectly. The problem is that when my archive become big (several years), it appears to be painful to find specified message(s). When someone suddenly needs to find his/her old message, it is mostly guesses like 'I think the message was between june and july of 2009, or maybe month or two before that', so I need to search all mailboxes (with 1000's messages in each). And it takes really long time. I tried to play with Dovecot indexes, but it won't help too much. The bad part is that I need to search for all emails in each message headers, not only for "From" or "To", since some messages are sent to maillists soe "To" = list address, not person's personal email. Then I tried to index messages on my own, storing info on emails into MySQL database ('email' -> 'mailbox', 'message filename'), but soon I find out that message files can be renamed by Dovecot. Could you please advice me how to speed up message search? Sorry for such a long question, hope you can help! Yours, Alexander Chekalin

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