- dovecot - dovecot.org

[Dovecot] Planning a dovecot deployment: issues and questions
by Dan Price 02 Feb '07

02 Feb '07

Hi folks, I am currently evaluating Dovecot for deployment to ~200 software engineers (so, heavy email users); I'm hoping this list could provide wisdom about how best to do the configuration, evaluation and deployment, and what testing folks have done to determine whether dovecot is right for their site. Below I've listed the diffs between the dovecot-example.conf and our config. I've been playing with 1.0rc19 running on Solaris Nevada. We have set it up on our server on an alternate port from the existing IMAPd, which is something ancient, horrible and problematic. We're using sendmail and mail.local as our MTA and MDA, respectively, as these ship with the OS, and we need to test them. I have some users who have volunteered to experiment with the server, and they are starting to do so. I've also seen the "flags" problems others have mentioned on the list, and I do not think I could deploy to production with that bug affecting the users. I also have some issues which I'm not sure have been previously reported: One user (of my 4 test users) is occasionally seeing a bug in which mutt 1.4.2.1 claims to be "[downloading xxx/30724]" headers. Upon getting very near to the 30724 total, the total rises to something like: "[downloading xxx/50132]". And on and on. The actual number of messages in the box is 30724. This is not very reproducible, and we do not yet know if it's a problem with mutt or dovecot. Another, using Apple's Mail.App reported: "Everything was working fine until i quit out of my mail app (Mac mail) and restarted. Then i saw weird things: - messages wouldn't get marked unread - messages from eons ago started showing up in my Drafts folder - Inbox would keep spinning/loading - then eventually Inbox just hung showing me no messages" Any thoughts about how to approach these issues? I don't really have a feel for how to go from user-observed-app-doing-X to imapd-is-doing-Y. The big challenge for our site may be mailbox size: the median mailbox size is 62M, the average is 176M and the largest is 1.1GB. I'd be curious to know what sort of mailbox sizes other sites have experienced, and how widespread the use of the Dovecot MDA is-- is this likely to make a big difference for us, and will we have to migrate our (approximately 25) procmail users to sieve? Having read the recent discussions about "1.0", I think my team would really appreciate knowing how to obtain something that was thoroughly vetted and worked highly reliably. If major changes are coming, I think it'd be great to have a 1.0.x stability focused tree, and a 1.1.x (or 2.x.x) feature tree. Thanks in advance for your comments, -dp ------- ------- ------- ------- ------- ------- ------- ------- ------- [note that IMAPS is off for now, but that's just temporary] $ diff dovecot.conf dovecot-example.conf 21d20 < protocols = imap 42,45d40 < protocol imap { < listen = *:150 < } < 50c45 < disable_plaintext_auth = no --- > #disable_plaintext_auth = yes 89c84 < ssl_disable = yes --- > #ssl_disable = no 214,215d208 < mail_location = mbox:~:INBOX=/var/mail/%u:INDEX=%h/Mail/imapd-indices < 258d250 < mail_extra_groups = mail 290d281 < dotlock_use_excl = yes 296d286 < lock_method = fcntl 441,444d430 < # dp: we'll see. < mbox_read_locks = dotlock fcntl < mbox_write_locks = dotlock fcntl < ------- ------- ------- ------- ------- ------- ------- ------- ------- -- Daniel Price - Solaris Kernel Engineering - dp(a)eng.sun.com - blogs.sun.com/dp

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[Dovecot] 1.0.rc20 released
by Timo Sirainen 02 Feb '07

02 Feb '07

http://dovecot.org/releases/dovecot-1.0.rc20.tar.gz http://dovecot.org/releases/dovecot-1.0.rc20.tar.gz.sig So, rc19 was somewhat broken. How about this version? + dovecot: Added --log-error command line option to log an error, so the error log is easily found. + Added mail_log_max_lines_per_sec setting. Change it to avoid log throttling with mail_log plugin. - Changing message flags was more or less broken in rc19 - ACL plugin still didn't work without separate control directory - Some mbox handling fixes, including fixing an infinite loop - Some index file handling fixes - maildir quota: Fixed a file descriptor leak - If auth_cache was enabled and userdb returned "user unknown" (typically only deliver can do that), dovecot-auth crashed. - mail_log plugin didn't work with pop3

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[Dovecot] Strange Error in RC19
by Jay Chandler 02 Feb '07

02 Feb '07

Drops IMAP connection when a particular user's "Sent" folder is opened. Does this mean that the sent folder is potentially corrupted? Feb 2 10:14:57 MyBox dovecot: IMAP(WhinyUserDuJour): file mbox-sync-rewrite.c: line 404 (mbox_sync_read_and_move): assertion failed: (need_space == (uoff_t)-mails[idx].space) -- Jay Chandler Network Administrator, Chapman University 714.628.7249 / chandler(a)chapman.edu Today's Excuse: those damn raccoons!

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[Dovecot] namespace subscription problem
by Nate Sanders 02 Feb '07

02 Feb '07

Greetings, I am trying to setup a private namespace in dovecot and running in to some troubles. Here is my setup: > default_mail_env = maildir:~/Maildir > > # default namespace > namespace private { > separator = . > prefix = > inbox = yes > } > namespace private { > separator = . > prefix = maillog. > location = maildir:/var/maildir/maillog/Maildir/ > #inbox = yes > hidden = no > } So far it's working to a degree. When I load my imap folder and go to Subscribe, I can see the master "maillog" folder, and expand it to see all the subfolders. The problem is, I cannot subscribe to the master "maillog" folder. Only it's sub folders. When I check dovecot.info it says this: > dovecot: 2007-01-31 13:27:42 Info: imap(nate): Namespace: > type=private, prefix=maillog., sep=., inbox=no, hidden=no, > subscriptions=no I see there "subscriptions=no". Is it possible to change this to yes? Would changing this to yes allow me to subscribe to the actual namespace folder? I tried adding "subscriptions=yes" and "subscription=yes" to dovecot.conf but both entries resulted in failed starts and errors. How is it possible allow subscriptions directly to this namespace? Thanks. -- Nate Sanders nate(a)ima.umn.edu Associate Systems Manager (612) 624 - 4353 Institute for Mathematics and its Applications

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[Dovecot] periodic problems with dovecot-1.0rc19 (No authentication sockets found)
by Mikhail Teterin 02 Feb '07

02 Feb '07

Hi, Timo! On the new server running 1.0rc19 people stop being able to login every once in a while. The log messages on the server side are: Jan 30 12:18:50 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:18:50 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:18:59 bonkers dovecot: pop3-login: No authentication sockets found Jan 30 12:19:01 bonkers dovecot: imap-login: No authentication sockets found Jan 30 12:19:06 bonkers dovecot: pop3-login: No authentication sockets found Restarting dovecot helps for a while, but then the problem reappears... The config-file was copied from an older server running 1.0.r15, where we never saw this problem... The old server ran FreeBSD-4.10/i386. The new one runs FreeBSD-6.2/amd64. Thanks for any hints! Yours, -mi

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[Dovecot] Over quota message
by Antonio Casado Rodríguez 02 Feb '07

02 Feb '07

Hi all, I'm working with Dovecot-1.0.rc19 + dovecot-lda + postfix + quota-maildir plugin When a new email arrives and it's over quota, the client receives this: -------------------------------- The mail system <vvv(a)ual.es>: Command died with status 89: "/usr/local/libexec/dovecot/deliver" -------------------------------- Reporting-MTA: dns; vvv.ual.es X-Postfix-Queue-ID: 3AA3F280AB X-Postfix-Sender: rfc822; zzz(a)ual.es Arrival-Date: Fri, 26 Jan 2007 15:00:17 +0100 (CET) Final-Recipient: rfc822; vvv(a)ual.es Original-Recipient: rfc822;vvv(a)ual.es Action: failed Status: 5.3.0 Diagnostic-Code: x-unix; unknown mail system error 89 -------------------------------- cannot be received another type of clear message like: the user to exceeded the quota?

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[Dovecot] dspam plugin
by Tom Bombadil 02 Feb '07

02 Feb '07

Hi all... I was looking into the dspam plugin, and it looks very interesting. I saw two version of it around: - one that forks and call dspam - one that calls a store procedure in mysql. I was wondering if we can just log signature and classification into a flat file, instead. The problem is that calling spam can be expensive; And eventhough the myslq solution is brilliant, I dont want to rely on mysql to be alive in order to move the files to/from spam box. Plus, the plugin would be much lighter wihtout libmysqlclient. Any ideas?

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[Dovecot] Dovecot mailing list page down
by Dotan Cohen 02 Feb '07

02 Feb '07

As I've decided not to manage my own mail server, I'm trying to unsubscribe from the dovecot list. However, the page at http://www.dovecot.org/mailinglists.html is down. Does anybody have the welcome email, so that they could tell me to what address to send the unsubscribe command to? Thanks in advance. Dotan Cohen http://lyricslist.com/lyrics/artist_albums/392/paige_jennifer.html http://what-is-what.com/what_is/opera.html

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[Dovecot] Query: LSUB "" "*" still on rc19
by Gavin Henry 02 Feb '07

02 Feb '07

Hi all, We've downgraded to rc17 for the past week or so, as when we upgraded to rc19, this error did go, but came back again. ERROR: Could not complete request. Query: LSUB "" "*" Reason Given: Internal error occurred. Refer to server log for more information. Looks like it never helped us in rc19. Back on rc17 just now, which we still have to restart a few times a day, do to the LDAP stuff (which was fixed in rc18/19), but at least we can get in ;-) Which logs settings/debug do you need to get more info? Thanks. -- Kind Regards, Gavin Henry. Managing Director. T +44 (0) 1224 279484 M +44 (0) 7930 323266 F +44 (0) 1224 824887 E ghenry(a)suretecsystems.com Open Source. Open Solutions(tm). http://www.suretecsystems.com/

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[Dovecot] mailbox corruption by pop3 access
by dovecot＠quartzcrystal.org 02 Feb '07

02 Feb '07

I have about 30 pop3 users at my dovecot server, and sometime there's mailboxes (/var/spool/mail/userid) are corrupt. Troubled mailbox contains unnecessary 2 lines on head of file. Example is follow... ------------------------ .93C7E660-- >From xxxxxx(a)xxxxx.com Tue Jan 16 19:29:21:2007 ------------------------ 3rd and following lines has no plobrem. Maybe, this first line is last line of previous mail. But I don't know why it was leaved. At such cases, when user tried to get his mail by pop3 client on remote host, and close connection by server immidiate. ------------------------ -ERR Mailbox isn't a valid mbox file Connection closed by foreign host. ------------------------ Every time I delete 2 lines from his mailbox to restore on server console when it corrupt. Has anyone such problem? OS: RedHat Enterprise Linux 4 Dovecot version: 0.99.11-4.EL4 (RH official rpm)

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