- dovecot - dovecot.org

[Dovecot] Unsuscribe
by Hendrik 19 Nov '12

19 Nov '12

Please unsubscribe me

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[Dovecot] Data Store Synchronization
by Roman Gelfand 19 Nov '12

19 Nov '12

Is there a way to synchronize dovecote mail store with another mail store, like zarafa, via imap or pop3? Thanks in advance

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[Dovecot] upgrade 1.0.15 -> 2.1.7: MBOX index compatibility and performance
by Benoit Branciard 19 Nov '12

19 Nov '12

Hi, we just upgraded our mailserver from Dovecot 1.0.15 to Dovecot 2.1.7. We use MBOX format (due to legacy compatibility), system users, PAM+GSSAPI auth, filesystem quotas, and indexes located on a separate filesystem: mail_location = mbox:~/mail:INBOX=~/mail/INBOX:INDEX=/var/cache/dovecot/indexes/%16Hu/%u The 2.1.7 configuration files have been rewritten based on default templates instead of converting it from 1.0.15. The server has ~8000 mailboxes and about ~2000 simultaneous IMAP/POP active connexions. The problem is: - indexes seem to be rebuilt: first IMAP/POP connexion for each user thows lots of error messages in the log, and the global index size decreases. Example error log: Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Cached message size larger than expected (27884 > 27855) Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Corrupted index cache file /var/cache/dovecot/indexes/4/myuser/.imap/INBOX/dovecot.index.cache: Broken physical size for mail UID 4414 Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Cached message size larger than expected (27884 > 27855) Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Corrupted index cache file /var/cache/dovecot/indexes/4/myuser/.imap/INBOX/dovecot.index.cache: Broken physical size for mail UID 4414 Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Cached message size larger than expected (27884 > 27855) Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Corrupted index cache file /var/cache/dovecot/indexes/4/myuser/.imap/INBOX/dovecot.index.cache: Broken physical size for mail UID 4414 Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Cached message size larger than expected (27884 > 27855) Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Corrupted index cache file /var/cache/dovecot/indexes/4/myuser/.imap/INBOX/dovecot.index.cache: Broken physical size for mail UID 4414 Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: copy: i_stream_read() failed: Input/output error Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Cached message size larger than expected (27884 > 27855) Nov 19 08:56:38 myhost dovecot: imap(myuser): Error: Corrupted index cache file /var/cache/dovecot/indexes/4/myuser/.imap/INBOX/dovecot.index.cache: Broken physical size for mail UID 4414 - load average is extremely high (more than 10x the usual one), resulting from an significant increase of disk I/O, and for now (4h after the "monday rush") this doesn't seem to decrease. Questions: - are 1.05 indexes supposed to be backward compatible with Dovecot 2.1.7 ? - are there some technical reasons which could explain the increase of disk I/O, apart from index rebuild ? -- Benoit BRANCIARD Service InfraStructures (SIS) - Direction du Système d'Information (DSI) Université Paris 1 Panthéon-Sorbonne Centre Pierre Mendès France B 406 - 90, rue de Tolbiac - 75634 Paris cedex 13 - France Tél : +33 1 44 07 89 68 - Fax : +33 1 44 07 89 66 Accueil tél. : +33 1 44 07 89 65 Assistance : assistance-dsi(a)univ-paris1.fr Web : http://dsi.univ-paris1.fr -- Ce message a ete verifie par MailScanner pour des virus ou des polluriels et rien de suspect n'a ete trouve.

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[Dovecot] advices for a new installation
by Surviet Amine 18 Nov '12

18 Nov '12

hello everyone, first of all, please forgive my bad english skill, I live in France. On our "old" Dovecot 1.x architecture, we have NFS shares between the front servers (MTA, IMAP...) and mail storage server. I've read some wiki2 pages that present the new director and imap proxy. But I'm still don't see things clearly, so I post here to have your advices to set-up a new mail architecture. The hardware we have : - 24x hard drives in a SAS bay - this bay is directly attached via SAS to a server that I'll call : mail storage server - 2 others servers run ProxMox Virtual Environment The PVE will help us to get many virtual servers : - MX : "mail in" servers - IMAP/POP : our hosted clients services These clients may come from webmail (RoundCube) and others clients (Outlook, Thunderbird, mobile clients...) - RoundCube webmail - MySQL server (hosts in databases accounts and settings for Postfix, Dovecot and RoundCube) - maybe antivirus and antispam servers I've read several threads about NFS and IMAP issues. So I decided to not keeping it. In this scenario, I've tried for the mail receiving part : - front-end (postfix lmtp-client) to mail storage server (lmtp server) that seems to runs fine, now i'll must try to add antispam and antivirus scans Now, for the IMAP part, could you, please tell me, if it is better to : - have several IMAP frontend servers that proxy to the mail storage server or - still keeps NFS between the mail storage server and the frontends Dovecot ? On our Dovecot 1.x webmail use imapproxy. I've read that others proxies exist. We have used for a limited time Perdition. What is the differences between imapproxy, Perdition, nginx imap proxy and Dovecot proxy ? Thanks for sharing your experience of "large mail service" that are solid enought to be scaled.

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[Dovecot] Different Mechanism for POP3
by Tim Smith 18 Nov '12

18 Nov '12

Just wondered if there was a way of making the PLAIN an authentication method for POP3S transactions only without making this an option for IMAP? I am attempting to connect to a POP3S server through the GMail interface available through "Accounts and Import". The issue is that there does not seem to be an option to specify the type of mechanism within their interface so I think I have to offer PLAIN along with SSL. Has anyone else had any experience of using the GMail import settings? -- Tim Smith Tel: 01423 564 078 Mob: 07984 398 299 Email: info(a)titan21.co.uk Web: www.titan21.co.uk

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[Dovecot] couple questions about dovecot
by Raan Young 18 Nov '12

18 Nov '12

I am attempting to migrate an ancient IMAP server to Dovecot 2.0.9 running on CentOS 6.3, while trying to minimize the impact on users. Most are using Outlook. I have everything working, but have run into a couple of problems, neither horrible, but both weird. It started when I noticed Outlook shows the .subscriptions file in the folder listing. I figured out a way to prevent that (see below), but then decided to attempt the same tactic to move the .imap index structure out of the folder tree and ran into an interesting side-effect. The .subscriptions issue would seem to be a bug, since the documentation I found implies Dovecot should be hiding it from list requests - as it does for the .imap index structure. I made a workaround by using the below mail_location setting. This puts the .subscriptions file above the imap folder structure and hence outside the list scope. mail_location = mbox:~/imap:INBOX=~/mbox:CONTROL=~:INDEX=~/.imap You'll note I have also moved the .imap index. This works, but the full path to the index files has extra layers of .imap. For example, if a folder tree of imap/A/B/C/D exists, where D is the actual mbox format message file, then the index files are stored in .imap/A/B/C/.imap/D. Don't know if this is a bug or I'm misunderstanding something. Can you provide any insight or better solutions for either issue? Some clients are also using iPhones and/or roundcubemail for web access. Those do not have the .subscriptions issue. Raan

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[Dovecot] dovecot: lda(root): Fatal: Invalid user settings. Refer to server log for more information.
by Thufir 17 Nov '12

17 Nov '12

I ran dovecot -a and the blizzard of data seemed ok to my limited knowledge. Is there another log I should look into to trace this error down? Dovecot and system info: thufir@dur:~$ thufir@dur:~$ dovecot --version 2.0.19 thufir@dur:~$ thufir@dur:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS" thufir@dur:~$ testing postfix & dovecot (http://packages.ubuntu.com/precise/dovecot-postfix) root@dur:/etc/postfix# root@dur:/etc/postfix# telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 dur.bounceme.net ESMTP Postfix (Ubuntu) helo me 250 dur.bounceme.net mail from:foo@bar.com 250 2.1.0 Ok rcpt to:root@dur.bounceme.net 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> subject:ping 3 blah blah . 250 2.0.0 Ok: queued as 35EC92A0D72 quit 221 2.0.0 Bye Connection closed by foreign host. root@dur:/etc/postfix# root@dur:/etc/postfix# tail /var/log/mail.log Nov 16 12:30:07 dur postfix/smtpd[4113]: connect from localhost[127.0.0.1] Nov 16 12:30:40 dur postfix/smtpd[4113]: 35EC92A0D72: client=localhost[127.0.0.1] Nov 16 12:30:52 dur postfix/cleanup[4133]: 35EC92A0D72: message-id=<20121116203040.35EC92A0D72(a)dur.bounceme.net> Nov 16 12:30:52 dur postfix/qmgr[1681]: 35EC92A0D72: from=<foo(a)bar.com>, size=321, nrcpt=1 (queue active) Nov 16 12:30:52 dur dovecot: lda(root): Error: chdir(/root/) failed: Permission denied (euid=65534(nobody) egid=65534(nogroup) missing +x perm: /root, dir owned by 0:0 mode=0700) Nov 16 12:30:52 dur dovecot: lda(root): Error: chdir(/root) failed: Permission denied Nov 16 12:30:52 dur dovecot: lda(root): Error: user root: Initialization failed: Initializing mail storage from mail_location setting failed: stat(/root/Maildir) failed: Permission denied (euid=65534(nobody) egid=65534(nogroup) missing +x perm: /root, dir owned by 0:0 mode=0700) Nov 16 12:30:52 dur dovecot: lda(root): Fatal: Invalid user settings. Refer to server log for more information. Nov 16 12:30:52 dur postfix/local[4134]: 35EC92A0D72: to=<root(a)dur.bounceme.net>, relay=local, delay=25, delays=25/0.02/0/0.12, dsn=4.3.0, status=deferred (temporary failure) Nov 16 12:30:56 dur postfix/smtpd[4113]: disconnect from localhost[127.0.0.1] root@dur:/etc/postfix# thanks, Thufir

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[Dovecot] Change errors to spanish
by Yago Alonso - Ityd 15 Nov '12

15 Nov '12

Hello, i have dovecot version 1.2.17 and i need to translate all the errors that my users receive when a mail fails to send. Were and how should i change it? Thanks a lot! -- Yago Alonso

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[Dovecot] emails are not displayed
by Daniel Fischer 15 Nov '12

15 Nov '12

Hello, i have a problem with some public folders in my testing environment. But after the series, here is my konfiguraion: doveconf -n # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-3-amd64 x86_64 Debian wheezy/sid hostname = ......................................... lda_mailbox_autocreate = yes lda_mailbox_autosubscribe = yes listen = * mail_debug = no mail_gid = 5000 mail_location = maildir:~:INDEX=/var/mail/indexes/%d/%n mail_plugins = acl mail_privileged_group = vmail 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 { list = children location = maildir:/var/mail/vhosts/%d/public:INDEX=/var/mail/indexes/%d/public:CONTROL=/var/mail/controls/%d/public prefix = Public. separator = . subscriptions = no type = public } namespace inbox { hidden = no inbox = yes list = yes location = prefix = separator = . subscriptions = yes type = private } passdb { args = scheme=CRAM-MD5 username_format=%u /var/mail/vhosts/auth.d/%d/shadow driver = passwd-file } plugin { acl = vfile antispam_allow_append_to_spam = no antispam_backend = pipe antispam_pipe_program = /usr/local/bin/sa-learn-pipe.sh antispam_pipe_program_notspam_arg = --ham antispam_pipe_program_spam_arg = --spam antispam_pipe_tmpdir = /tmp antispam_spam = Spam antispam_trash = Trash sieve = /var/mail/vhosts/sieve/users/%d/%n/.dovecot.sieve sieve_before = /var/mail/vhosts/sieve/%d/before sieve_dir = /var/mail/vhosts/sieve/users/%d/%n sieve_global_dir = /var/mail/vhosts/sieve/%d/global sieve_user_log = /var/mail/vhosts/sieve/users/%d/%n/.dovecot.sieve.log } postmaster_address = postmaster@..... protocols = " imap lmtp sieve pop3" service auth { unix_listener /var/spool/postfix/private/auth { mode = 0666 } unix_listener auth-userdb { mode = 0660 user = vmail } } service managesieve-login { inet_listener sieve { port = 4190 } } ssl_cert = </etc/ssl/private/................................. ssl_key = </etc/ssl/private/......................... userdb { args = username_format=%u /var/mail/vhosts/auth.d/%d/passwd driver = passwd-file } protocol lmtp { mail_plugins = acl sieve } protocol lda { log_path = /var/log/sieve.log mail_plugins = acl sieve } protocol imap { imap_idle_notify_interval = 24 mins mail_plugins = acl imap_acl antispam } protocol sieve { managesieve_implementation_string = Dovecot Pigeonhole managesieve_logout_format = bytes=%i/%o } the problem is that any, not all public folder appear empty. if I delete the index files, I see the emails again for a while(1-2 hours) until they're gone again sometime. The directories change their content not for weeks. It is a test environment. but in one of the folders are more than 13000 mails (the Faxbox). Currently 3 of 13 folders are affected. I thought that it may be due to the size, but it is not the largest folders. For normal mail boxes I have not observed this effect. a3 EXAMINE Public.faxe * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS ()] Read-only mailbox. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1349419566] UIDs valid * OK [UIDNEXT 141737] Predicted next UID * OK [HIGHESTMODSEQ 5] Highest Delete indexes.... /var/mail/indexes/........../public# rm -r .faxe/ a3 EXAMINE Public.faxe * OK [CLOSED] Previous mailbox closed. * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS ()] Read-only mailbox. * 13778 EXISTS * 0 RECENT * OK [UIDVALIDITY 1349419566] UIDs valid * OK [UIDNEXT 141737] Predicted next UID * OK [NOMODSEQ] No permanent modsequences i would like to show you log files but i didn't see any error message. Does Have anyone an idea? Thanks for comment... Daniel

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[Dovecot] auth attempts errors
by burak gürer 15 Nov '12

15 Nov '12

i have install 2.1.1 and configured in dovecot log this error is coming every 20 seconds: dovecot: imap-login: Disconnected (no auth attempts in 0 secs): rip=**********, lip=**********, TLS handshaking: SSL_accept() syscall failed: Connection reset by peer and this error every 2 seconds: dovecot: imap-login: Disconnected (no auth attempts in 0 secs): rip=**********, lip=********** what can be the problem? thanks..

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