- dovecot - dovecot.org

[Dovecot] Best Cluster Storage
by Jonathan Tripathy 27 Jan '11

27 Jan '11

Hi Everyone, I wish to create a Postfix/Dovecot active-active cluster (each node will run Postfix *and* Dovecot), which will obviously have to use central storage. I'm looking for ideas to see what's the best out there. All of this will be running on multiple Xen hosts, however I don't think that matters as long as I make sure that the cluster nodes are on different physical boxes. Here are my ideas so far for the central storage: 1) NFS Server using DRBD+LinuxHA. Export the same NFS share to each mail server. Which this seems easy, how well does Dovecot work with NFS? I've read the wiki page, and it doesn't sound promising. But it may be outdated.. 2) Export block storage using iSCSI from targets which have GFS2 on DRBD+LinuxHA. This is tricky to get working well, and it's only a theory. 3) GlusterFS. Easy to set up, but apparently very slow to run. So what's everybody using? I know that Postfix runs well on NFS (according to their docs). I intend to use Maildir Thanks

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[Dovecot] Can't get it working
by llwyble＠suddenlink.net 26 Jan '11

26 Jan '11

I get dovecot to work and answer when telnet to 110 both local and from another computer. But it shows nothing in the log files except it's running. Here's the log and other info: /var/log/maillog: Jan 25 16:49:32 widgeteye dovecot: master: Dovecot v2.0.9 starting up (core dumps disabled) dovecot --version 2.0.9 dovecot -n output # 2.0.9: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 2.6.33.4-smp i686 Slackware 13.1.0 default_internal_user = myusername default_login_user = myusername disable_plaintext_auth = no listen = * mail_location = maildir:~/mail mail_privileged_group = mail passdb { args = scheme=CRYPT username_format=%u /usr/local/etc/dovecot/passwd.dovecot driver = passwd-file } protocols = pop3 service pop3-login { inet_listener pop3 { port = 110 } } ssl = no userdb { args = username_format=%u /usr/local/etc/dovecot/passwd.dovecot driver = passwd-file } When I try get mail from my machine from another computer I get nothing What's up? Thanks

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[Dovecot] Questiosn about dbox
by Javier de Miguel Rodríguez 26 Jan '11

26 Jan '11

Hello I have read carefully about dbox (/http://wiki2.dovecot.org/MailboxFormat/dbox/) and I have some questions: - One of the main advantages (speed wise) of dbox over maildir is that index files are the only storage for message flags and keywords. What happens when we want to recover some messages from backup? With maildir we can rebuild message indexes, but I am not sure about dbox. Should we also restore "old indexes" and merge with the "new indexes" in order to restore the deleted messages? - The previous question applies to sdbox and mdbox. In the case of mdbox, we can configure rotation of files using /mdbox_rotate_size/ . We would like to rotate daily, not based in size (our users ask us for yesterday's backup). How can we accomplish this? We have now 17.000.000 messages in our maildir, almost 1.5 TB (zlib compresssion enabled). Our backup time with bacula is rather bad: 24 hours for a full backup, most of the time the backup is busy fstat'ing all those little messages. We think that mdbox can help us in this. Does anybody has good experiences migrating from maildir->mdox in "large" enviroments? What about mdox performance & reliability? Thank you for your support Javier

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[Dovecot] Offtopic: Mac Mail Autoconfigure
by stefan novak 26 Jan '11

26 Jan '11

Hello, i know its a little bit Offtopic, but i know many Mailadmins are reading here ;) Does anybody know howto autoconfigure Mac Mail als ISP Provider. We have troubles with the default Settings of Mac Mail (POP3s with APOP) and want to change them via autodiscover. Is there something simular to Thunderbirds Config Site: https://developer.mozilla.org/en/Thunderbird/Autoconfiguration google just offers similar problems, but no solutions :( http://groups.google.com/group/macenterprise/browse_thread/thread/a88294331… thx for your help Stefan

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[Dovecot] authentication methods : pam, passwd and then backup question. How to restrict the methods
by J4K 25 Jan '11

25 Jan '11

Dear all, I noticed that incoming users were attempting to authenicate using several methods like pam sql. Eventually, they logged in. Is there a way for dovecot to only query a mysql backup for users, and skip the other methods? Examples from logs (via Roundcube webmail in this case, but the same messages appear with port 993) Jan 25 17:22:17 srv dovecot: auth-worker(default): pam(aa(a)bb.co.uk,127.0.0.1): pam_authenticate() failed: Authentication failure (password mismatch?) Jan 25 17:22:17 srv dovecot: auth(default): passwd(aa(a)bb.co.uk,127.0.0.1): unknown user Jan 25 17:22:17 srv dovecot: imap-login: Login: user=<aa(a)bb.co.uk>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured As shown above, the user uses pam, passwd and then finally the user account fetched from mysql. The distribution is Debian Squeeze. Regards, s

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[Dovecot] dovecot ocf resource script
by jeroen＠intuxicated.org 25 Jan '11

25 Jan '11

Hi, I created a dovecot resource script for pacemaker. I think it's done, but I wanted to ask if some people could examine it before I send it to the pacemaker people. Thanks in advance. Best regards, Jeoren Koekkoek

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[Dovecot] Panic in 2.0.9 imap-client
by Thierry de Montaudry 25 Jan '11

25 Jan '11

Hi, Yesterday I upgraded one of our system from 2.0.7 to 2.0.9, I've got about 5 panic since then. It is using the exact same config (see attached) and was compiled the same way. Any clue on the reason? And how can I fix that? Jan 17 12:06:20 server dovecot: imap(XXXX@YYYYYYY): Panic: file imap-client.c: line 570 (client_continue_pending_input): assertion failed: (!client->handling_input) Jan 17 12:06:20 server dovecot: imap(XXXX@YYYYYYY): Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0 [0x382be3b620] -> /usr/lib64/dovecot/libdovecot.so.0 [0x382be3b676] -> /usr/lib64/dovecot/libdovecot.so.0 [0x382be3ab33] -> dovecot/imap [0x40f766] -> dovecot/imap(cmd_idle+0xc5) [0x40a825] -> dovecot/imap [0x40f2ec] -> dovecot/imap [0x40f3a2] -> dovecot/imap(client_handle_input+0x3f) [0x40f4ef] -> dovecot/imap(client_input+0x62) [0x40fe62] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x48) [0x382be45e78] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0xd5) [0x382be471b5] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x2d) [0x382be45e0d] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x382be34c33] -> dovecot/imap(main+0x1d8) [0x417948] -> /lib64/libc.so.6(__libc_start_main+0xf4) [0x3ac341d994] -> dovecot/imap [0x408179]

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[Dovecot] shared namespace subscription
by adrian.stoica＠dacris.net 25 Jan '11

25 Jan '11

I test dovecot 2.0.9 and i use a shared namespace. I use this to see inbox for user2 in shared namespace for user1. When user2 unsubscribe for inbox , the shared inbox disapear too from shared namespace in user1 list. This is normal ? I believe that whatever subscription has user2 , if the director is shared , only the indexes will be copyied from the original place, not along with the subscription.

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[Dovecot] custom maildir location mapping
by Vlad Mazek 25 Jan '11

25 Jan '11

Greetings, I'm migrating from a sendmail/dovecot setup with system users to a postfix/dovecot maildir setup with virtual users. To simplify the mess we've gotten into by having users that can't remember their username, we've switched to email address being the username. In order to allow for a smooth migration, I need to allow users to be able to login with their email address as well as their (old) username for about a month or so. I have all the usernames, email addresses and passwords stored in SQL and I'm generating the userdb and passworddb manually. Is there any way to create a userdb and passworddb so that users can login with either username or email address and have dovecot locate their maildir without an issue? For example, I'd like to be able to login as either vlad or vlad(a)vladville.com and have dovecot locate my maildir:/var/spool/mail/%d/%n; I'd really appreciate any thoughts, ideas and examples anyone is willing to share. I'm really looking to avoid a shotgun approach ("On Feb 1, your new username is your email address"). Here are some notes on the currently functioning setup: I'm running dovecot 1.0.7 on CentOS 5.5 x64 with Postfix 2.3.3 mail_location = maildir:/var/spool/mail/%d/%n userdb static { args = uid=virtual gid=virtual home=/var/mail/%d/%u } passdb passwd-file { args = /etc/dovecot/passwd } user@domain.com:{HMAC-MD5}1b05f379...

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[Dovecot] PAM problem with virtual domain/user ownership
by Mauricio Tavares 25 Jan '11

25 Jan '11

I am running dovecot 1.2.9 (ubuntu package, not from source) and wanted to use pam to authenticate my mail users who have no local accounts. I've done that before in an earlier release of dovecot and ubuntu, so I would not need to do set dovecot to ask LDAP directly. So, I have in dovecot.conf: # Authentication processes mechanisms = plain login passdb pam { args = "*" } userdb static { args = allow_all_users uid=virtual gid=virtual home=/var/spool/vmail/domain.com/%n } i.e. /var/spool/vmail/domain.com/ is owned by virtual:virtual, drwxr-x--- 4 virtual virtual 4.0K 2011-01-23 11:45 domain.com and that is how I would hope dovecot would be trying to login as. When I tried to login as user raub, the log file seems to tell me that it is trying to create /var/spool/vmail/domain.com/raub/cur as raub:users, not as virtual:virtual Jan 22 06:35:02 mail dovecot: imap-login: Login: user=<raub>, method=PLAIN, rip=216.155.101.90, lip=216.155.101.94, TLS Jan 22 06:35:02 mail dovecot: IMAP(raub): mkdir(/var/spool/vmail/domain.com/raub/cur) failed: Permission denied (euid=5016(raub) egid=100(users) missing +w perm: /var/spool/vmail/domain.com) What am I missing here?

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