May 2004 - dovecot - dovecot.org

[Dovecot] maildirsize
by Brian Candler 17 May '04

17 May '04

Hello, Are there plans to implement Maildir++ quotas (maildirsize) in dovecot in the near future? Also - how do things work if you have multiple dovecot frontends accessing an NFS mailstore? If you keep the index files on local disk, and clients connect alternately to different machines, are the stale indexes noticed and corrected? Thanks, Brian.

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[Dovecot] Dovecot vs. Courier-Imap
by Marten Lehmann 17 May '04

17 May '04

Hello, I've heard of both and I already tested and installed both, but I'm not sure which one is better, since both just seem to work and I can't see a difference, except from the point how it's set up and configured. Where are the drawbacks of each one, where are the benefits? I also tested cyrus before, but cyrus is not working well with maildirs. I'm not that into detail of both projects, maybe you can explain a bit. Thanks in advance for every answer! Regards Marten

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[Dovecot] 1.0-test9 released
by Timo Sirainen 17 May '04

17 May '04

http://dovecot.org/test/ - SORT command always replied with NO - Locking fixes. Fixes several crashes, dotlock errors and deadlock errors - When multiple sessions were concurrently modifying mailbox it often mixed up the messages that were supposed to be modified. When expunging it also gave errors such as: Corrupted transaction log file /home/user/Maildir/.INBOX/dovecot.index.log: Expunge range 5..5: UIDs 6..6 doesn't match real UIDs 18..18 Now it doesn't do it as often, but it still does.. I'm not really sure where the bug is. Have to keep looking. This seems much more stable than test8, but because of the above problem I still don't recommend it for more than testing.

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[Dovecot] local auth
by Kees Cook 15 May '04

15 May '04

Is there a way to run dovecot locally as a user, like uw-imap lets you do? I want to use dovecot with fetchmail over ssh... I couldn't find anything in the archives on this. -- Kees Cook @outflux.net

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[Dovecot] can I share IMAP folders for multiple user
by Hitao 14 May '04

14 May '04

Hi, Dear all, Just a bit curious, could I configure dovecot for two users share the access to certain IMAP folders in the mailbox? I searched the list archive and only found http://dovecot.org/list/dovecot/2004-April/003236.html and http://dovecot.org/list/dovecot/2004-April/003168.html, but I am not sure is this the same thing that I want and where could I find more details? Wish you a nice day! Hitao

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[Dovecot] dovecot-1.0-test8 / nfs / maildir / flags issues
by Maikel Verheijen 14 May '04

14 May '04

Hi List, While (bluntly) testing the prerelease version of dovecot on our mailfarm (just for the webmail imap) we noticed some small problems: - While our OLD dovecot/imap drove the load to a maximum of 1 over a day after running, the new dovecot/imap pushes it easily to 20. This is mainly due to a LOT more disk activity. This is probably caused by the fact we a) use indexes on disk and b) there are no indexes left. I hope this will smooth out when most of the indexes are made. - We notice some very strange "delete" flag things in our IMP webmail system (working on a test environment to be more specific). The problem is that if you mark some messages "deleted", a lot of messages that do NOT have "deleted" flag are also in the deleted list. Since nothing changed on the webmail, it must be in the way dovecot responds different in the new version on certain requests. - In the dotlocking code, it seems that dovecot uses time() for it's internal locktime, and uses stat() to see if the file-time of the lock is different. Since we use nfs there might be a time-difference on the file creation and time() when our nfs gets "busy". This happens a lot when the indexes are created for multiple users at the same time resulting in a lot of: May 12 08:57:44 mf1 dovecot[3763]: imap(user(a)domain.tld): Our dotlock file /var/mail/mounted/d/do/domain.tld/user/Maildir/.INBOX/ dovecot.index.log.lock was modified (1084345063 vs 1084345062), assuming it wasn't overridden I am not completely sure if this interrupts imap traffic. I think this MIGHT be solved by storing a stat() time as the locktime instead of a time(), but this might be intentional. - I patched dovecot to report its pid in syslog messages, in order to find the "killed by signal X" where X are mostly 11 and 6 processes. The pids reported do not show up in the rest of the log file, so these may be "disconnected" sessions? It seems that the "old" version has the same problem, and nobody really complained it was broken, so this isn't a big issue. To clarify our setup: We use multiple mail-frontends running dovecot that are load-balanced by a cisco load-balancer. We mount our mailstores from an active-active backend cluster, both nodes export a big partition, and take over the job of the other in case of a problem. This seems to go pretty smooth. Our users are stored in a pgsql database. In our current setup, we run a modified cvs version of dovecot from WAY back, to support nfs. The backdraw is that we can't use the newer dovecot releases, since I couldn't modify the source in the way I did it the first time (with a LOT of help from Timo :P). If anyone has some ideas on where to look and where to test in order to get our problems more clear, I would be very grateful :) Kind regards, Maikel Verheijen Ladot Nederland BV.

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[Dovecot] Problem building 1.0-test7 : missing header
by Curtis Maloney 13 May '04

13 May '04

Greetings, I recently rolled out Dovecot in our small (<30 people) company, and have been mightily impressed by the quality, performance and ease of use. I was hoping to use the new versions soon, as I'd like to start using CRAM-MD5 (much more common in mail clients than DIGEST-MD5), but found the 0.99.11 versions too unstable. So, I tried to build last nights CVS snapshot (May 10th), only to have the make break at this point: make[3]: Entering directory `/home/src/dovecot-1.0-test7/src/lib-index' make[3]: *** No rule to make target `mail-index-util.h', needed by `mail-cache.o'. Stop. I know it's not much, but it's a start at giving back a little. Hope it helps. -- Curtis Maloney

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[Dovecot] Codepage of folder names
by Petr Tuma 13 May '04

13 May '04

Hi, I have run into a problem configuring DoveCot 0.99 on a Linux server that handles Windows users. The server uses UTF8 on its filesystem but the Outlook IMAP folder names are sent in what looks like CP852. As a result, folder names that use national characters are damaged, which in turn breaks a webmail application running on the same server. A natural solution would be DoveCot translating folder names from CP852 coming across the wire to UTF8 used in filesystem operations, but I did not find any option for that in the configuration. Anybody encountered and solved this problem ? Petr Tuma

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[Dovecot] Is Dovecot ready for production use?
by Benjamin J. Weiss 12 May '04

12 May '04

Hi! I'm currently running RH 9 with postfix, uw-imap and MailScanner. I want to install Fedora Core 2 (when it comes out next week) with postfix, dovecot and amavisd. I'm unhappy with the problems I'm having with MailScanner, with the difficulty I've had with authentication as I am currently configured, and want to move to Maildir instead of mbox. That being said, is dovecot stable enough yet for production use? I only have four users on my home linux box, but I personally get around 500 emails a day (that fedora list is *busy*). Thanks, Ben

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[Dovecot] php.ini tweak
by Avery 12 May '04

12 May '04

I noticed this is my /etc/php.ini file ---------------------------------------- ; This directive tells PHP whether to declare the argv&argc variables (that ; would contain the GET information). If you don't use these variables, you ; should turn it off for increased performance. register_argc_argv = on ---------------------------------------- I ma trying to squeeze some extra performance out of my email server. If I turn this to off will this cause any problems with SQmail or any of SQmail's plugins. I tried turned this setting to off and everything seems to work fine. I am surprised that no one has asked about this before in this mailing list. Thanks, Avery

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