- dovecot - dovecot.org

[Dovecot] Permissions when running `dovecot --exec-mail imap`
by Tim Marston 24 Jan '13

24 Jan '13

Hi, I'm running dovecot 1.2.15, on Debian squeeze. /var/mail is owned by group "mail" with permissions "g+rwxs,o=". The mail_privileged_group setting is set to "mail". I am trying to access mail on a remote machine with mutt by tunnelling mutt though ssh and running `dovecot --exec-mail imap` on the mail server. But I frequently get errors in the mail server's logs about not being able to create dotlock files when accessing my INBOX this way. This makes sense -- I'm running dovecot as a regular user, so it isn't able to write to /var/mail as group "mail". I notice that on the dovecot wiki[1] it is suggested that sudo is used to set uid/gid before running `dovecot --exec-mail imap`. But I don't actually want to set the uid, just the gid. And I also have sudo disabled at the moment. So I was wondering about another solution... Would it be acceptable to setgid the dovecot executable and change it's group to "mail" (i.e., `chgrp mail dovecot` and `chmod g+s dovecot`)? Would this pose some kind of security risk? Would this actualy do what I want, or am I missing a bigger picture? Kind regards, [1] http://wiki.dovecot.org/PreAuth -- Tim Marston ed.am

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[Dovecot] warning regarding quota and mboxes
by Andreas Meyer 23 Jan '13

23 Jan '13

Hello! We drive mboxes and maildirs and the dovecot-server is running very well and everthing is fine, but I get the following warning in the dovecot-lda-errors.log when a mail is delivered to a mbox. Jan 10 16:29:24 lda(archiv(a)bitcorner.de): Warning: quota: Namespace '' is not Maildir, skipping for Maildir++ quota This is what I defined in the dovecot.conf: mail_home = /var/spool/vhosts/%d/%n mail_location = mbox:~/:maildir:~/ mail_plugins = quota plugin { quota = maildir:User quota quota_rule = *:storage=500MB quota_rule2 = Trash:storage=+10%% } Can I avoid the error above somehow? Namespaces are a bit mysterious for me at the moment. Greetings Andreas

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[Dovecot] speed up dovecot IMAP server
by Bernics Gábor | Penta Unió Zrt. 23 Jan '13

23 Jan '13

Hello, I upgraded my dovecot server (1.2 -> 2.1), from debian backport because it was a little slow (wait 5-6 sec) when I opened some mail (but not every mail). Unfortunately, the mail open speed didn't increase. I think it's an index problem. Have you idea for fixing? My conf: http://pastebin.com/FNLusi51 [1] (HP Microserver with 6 Gbyte RAM - entry level server with small load and small (max. 40) concurrent connection) Best regards, Gabor Links: ------ [1] http://pastebin.com/FNLusi51

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[Dovecot] dovecot nightly 20130117: dsync does returns "Name or service not known"
by Evgeny Basov 23 Jan '13

23 Jan '13

Hello. I have this settings of imapc: # doveconf -a | grep imapc imapc_features = imapc_host = imapc_list_prefix = imapc_master_user = imapc_max_idle_time = 29 mins imapc_password = imapc_port = 143 imapc_rawlog_dir = imapc_ssl = no imapc_ssl_ca_dir = imapc_ssl_verify = yes imapc_user = %u and try to sync mailbox on old server and new one: $ dsync -o imapc_user="user(a)example.org" -o imapc_password="pass" -o imapc_host=imap.example.org -o imapc_features=rfc822.size -o mailbox_list_index=no backup -R -f -u "user(a)example.org" imapc: get this error: ssh: Could not resolve hostname remote: Name or service not known dsync-local(basov(a)megagroup.ru): Error: read(remote) failed: EOF dsync-local(basov(a)megagroup.ru): Error: Remote command returned error 255 In this time new dovecot finds local user: 2013-01-17T17:21:29.837415+04:00 imap1 dovecot: auth: Debug: userdb out: USER#0111#011user@example.org#011home=/var/vmail/example.org/user/#011quota2_rule=*:storage=40M#011nodelay=Y#011uid=999#011gid=999 I don't understand what's mean under 'hostname remote'. What hostname? Is it bug or incorrect settings?

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[Dovecot] Fixing bad maildir message sizes
by Richard Platel 23 Jan '13

23 Jan '13

Hello. As stated in my previous message, we have some old compressed maildir messages with incorrect sizes in the filename. These messages cause dovecot 2.x problems. I'm trying to write a script to crawl all our messages, check the actual message size and if necessary, fix the filename. However, when I do this, dovecot gives the message a new UID on next login. If I change the filename in dovecot-uidlist, dovecot still gives a new UID on next login. If I change dovecot-uidlist and delete the index, then the UID is preserved. Re-indexing our millions of mailboxes is not a great solution for us. Is there a good way to fix this?

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[Dovecot] question on "doveadm user" and pass/userdb
by Gábor Lénárt 22 Jan '13

22 Jan '13

Hi, I'm about getting to know dovecot in details, I am about the command "doveadm user". The man page shows this example: userdb: jane uid : 8001 gid : 8001 home : /home/jane mail : sdbox:~/sdbox plugins : sieve quota_rule: *:storage=150M It seems to be nice, however I never got this only: ~# doveadm user lgb@office userdb: lgb@office That's all. The dovecot test configuration works otherwise via IMAP/POP3/LMTP nicely. What I guess that the lack of extra information (which would be needed by some scripts of mine, eg for getting user's home easily from shell scripts, as it's hash based, etc) is caused because I don't pass home (and/or other settings) back from userdb and/or passdb. However I do have these in global scope: mail_home = /mailstorage/%Ld/%Ln (yes, this is not hashed at all at the momement but it will be soon) mail_location = maildir:~/Maildir mail_uid = vmail mail_gid = vmail (... and also some global quota stuffs configured in plugin section) Now, I am a bit confused: even with passdb/userdb does not return with user home or GID/UID, dovecot knows these in case of pop3/imap/lmtp access, since these information can be "composed" from those settings. But then, wouldn't it possible so "doveadm user" shows those as well, like lmtp/pop3/imap can resolve those too? Honestly, it's a bit redundant to put needed information into user and pass attrs in every dbs (I have some) when dovecot knows those otherwise ... If I interpret "doveadm user"'s goal wrong (it's just for userdb/passdb query tool nothing more), is there any tool which works in this config, displaying extra information (at least user's home), or should I create some script which just repeats the functionality of dovecot's configured mail_home resolution? Thanks.

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[Dovecot] namespace o shared folder, deleting index no message
by R. G. 22 Jan '13

22 Jan '13

when I set up namespace or shared folder, I need to delete the mail from the mailbox of the user who does not want to see him, but not the rest of the users. Is this possible in dovecot?.

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[Dovecot] Fts Search
by Makarov Alex 22 Jan '13

22 Jan '13

Hello, i'm trying to search in mails which are in russian language. Search works fine for UTF-8 mails, but it ignores KOI8-R ones. For english in any mails it also works fine. How i can solve it? I have dovecot 1.2.17 and following config for fts: protocol imap { ..... mail_plugins = quota imap_quota autocreate fts fts_squat } plugin { ... fts = squat fts_squat = partial=4 full=10 }

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[Dovecot] Mail logger question
by Hungerburg 21 Jan '13

21 Jan '13

I use Dovecot simply as a way, to provide an e-mail archive for people on the LAN, where they can move messages into from within thunderbird. Mails are stored in a maildir of one system user where all the people know the password of. This was very easy to setup in ubuntu 12. Today I started using the mail_log plugin to provide an audit trail. Now I am looking for a light way, to get the log reflect the different people or principals. One way is, to create users with the same ID in the passwd and shadow files, but I'd rather have them in a separate file, something like a list of aliases for the system user. Can you suggest a simple way, without going virtual users? Below the relevant info on dovecot: $ dovecot --version 2.0.19 $ dovecot -n # 2.0.19: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-35-generic x86_64 Ubuntu 12.04.1 LTS mail_plugins = " fts fts_squat mail_log notify" passdb { driver = pam } plugin { fts = squat fts_squat = partial=4 full=10 mail_log_events = save delete undelete expunge copy mailbox_delete mailbox_rename mail_log_fields = uid box msgid size from subject } protocols = " imap" ssl_cert = </etc/ssl/certs/ssl-cert-snakeoil.pem ssl_key = </etc/ssl/private/ssl-cert-snakeoil.key userdb { driver = passwd } Thank you all -- peter

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[Dovecot] CDB support (with patch)
by Hleb Valoshka 21 Jan '13

21 Jan '13

Hello! Is there anybody interested in CDB support for auth dicts? I've implemented simple patch for it.

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