- dovecot - dovecot.org

[Dovecot] imaptest10 and stalled messages
by Mike Brudenell 01 Apr '07

01 Apr '07

Greetings - I've now got as far as playing with the imaptest10 test utility to see if I can stress-test our development server. imaptest10 is built against dovecot-1.0rc28 It may just be that I'm excessively heavy handed, but when I let imaptest10 rip with the command... ./imaptest10 user=test%03d host=testserver.imap.york.ac.uk clients=50 mbox=./dovecot.mbox msgs=1000 secs=30 logout=10 ...after 15 seconds or so I started getting output along the lines of: Logi List Stat Sele Fetc Fet2 Stor Dele Expu Appe Logo 100% 50% 50% 100% 100% 100% 50% 100% 100% 100% 10% 30% 5% 2 0 1 1 1 0 0 0 0 0 0 50/ 50 2 0 0 1 1 0 0 0 0 0 0 50/ 50 0 0 2 2 0 1 1 1 1 1 0 50/ 50 2 0 2 2 0 1 1 1 1 1 2 50/ 50 0 0 1 1 0 0 0 0 0 0 0 50/ 50 - 16. stalled for 16 secs in LOGIN - 17. stalled for 16 secs in LOGIN - 18. stalled for 16 secs in LOGIN 2 1 1 2 1 0 0 0 0 0 0 50/ 50 - 17. stalled for 17 secs in LOGIN - 18. stalled for 17 secs in LOGIN - 22. stalled for 16 secs in LOGIN - 23. stalled for 16 secs in LOGIN - 24. stalled for 16 secs in LOGIN 1 0 1 1 0 0 0 0 0 0 0 50/ 50 - 17. stalled for 18 secs in LOGIN - 18. stalled for 18 secs in LOGIN - 22. stalled for 17 secs in LOGIN - 23. stalled for 17 secs in LOGIN - 24. stalled for 17 secs in LOGIN - 28. stalled for 16 secs in LOGIN - 29. stalled for 16 secs in LOGIN - 30. stalled for 16 secs in LOGIN - 31. stalled for 16 secs in LOGIN - 32. stalled for 16 secs in LOGIN The "stalled" log lines continue until the test completes. I'm assuming it's just that I'm pushing our hardware beyond its reasonable limits: it is only an oldish development box... Sun v120 with 1 650MHz SPARC processor and 1Gbyte RAM Dovecot is using shadow password file authentication. The mail folders are in Maildirs, NFS-mounted from a NetApp filer, and each account's INBOX has around 1000 messages in it. Control and Index files are on local disk. By the end of the 30 second test run load average has climbed to around 11 I don't know how "active" the imaptest10 utility is when it's running, but do you think I should be concerned by the "stalled" messages? That is, do you think I have something configured amiss? Or is it likely just to be I'm expecting too much of our hardware? (The real system will have beefier Suns with Opteron-based CPUs, more memory, etc) With thanks, Mike B-) PS. I forgot to say: despite all this activity there's not a single error logged by Dovecot in the (admittedly short at this stage) test runs. -- The Computing Service, University of York, Heslington, York Yo10 5DD, UK Tel:+44-1904-433811 FAX:+44-1904-433740 * Unsolicited commercial e-mail is NOT welcome at this e-mail address. *

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[Dovecot] locking question
by Stewart Dean 01 Apr '07

01 Apr '07

There are three applications that have their mitts on files on my mail server, which is running AIXV5.3 and UWIMAP and mbox format. The mail folders and INBOXES are native to that machine, but also are NFS exported to a login server and a mailing list server. All three machines are running the lockd daemon. Everybody wants to lock differently 1) procmail (delivering for sendmail), which seems to want to use dotlocking, fcntl and lockf locking; for whatever reasons, the compile time tests seem to disallow flock. 2) UWIMAP which according to wiki.dovecot.org/Migration/UW uses: mbox_read_locks = flock mbox_write_locks = dotlock flock 3) I want to run dovecot in the same environment as I switch over, for which the locking strategy is supposed to be (according to http://wiki.dovecot.org/MboxLocking) mbox_read_locks = fcntl mbox_write_locks = dotlock fcntl Since that same page in the wiki says. "*It's important that all software that's reading or writing to mboxes use the same locking settings.",* I had recompiled procmail so it only usedotlocking and fcntl (thus removing lockf in addition to the disallowed flock)...but now I bumped into the Migration/UW page and there looks to be a conflict. I want to be able to run dovecot (for testing) and UWIMAP (for all users/production) at the same time (but never at the same time with the same mailbox), but UWIMAP is doc'ed to use flock and Dovecot doesn't It's conceivable that the different locking strategies of UWIMAP and Dovecot don't matter because they would never be going after the same mail files (right?) but there is procmail, which has to interact with both. It appears to not use flock OK, even though the docs say it should since UWIMAP expects it, and I've disabled lockf as well. But will there be a conflict with procmail and dovecot's use of fcntl, which UWIMAP doesn't use? Help. * * ** -- ==== Stewart Dean, Unix System Admin, Henderson Computer Resources Center of Bard College, Annandale-on-Hudson, New York 12504 sdean(a)bard.edu voice: 845-758-7475, fax: 845-758-7035

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[Dovecot] who owns dovecot files and dirs?
by Stewart Dean 01 Apr '07

01 Apr '07

...and what permissions should they have. I am thinking of /var/run/dovecot and the index directory. What ownership, group and permissions should they be? Are there any other files/dirs created for dovecot alone (not the mail folders and INBOXes); if so, how should they be owned and permed? I had thought they were to be owned by dovecot, but it turns out that they should not -- ==== Stewart Dean, Unix System Admin, Henderson Computer Resources Center of Bard College, Annandale-on-Hudson, New York 12504 sdean(a)bard.edu voice: 845-758-7475, fax: 845-758-7035

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[Dovecot] 1.0rc29: Corrupted index cache file
by Jeff Rice 01 Apr '07

01 Apr '07

Hi, I have recently migrated from Courier to Dovecot, and I noticed a problem in one of my spam scripts. Here's the setup: Spam that needs to be retrained by the filter is placed in a maildir from the IMAP client. A cron job scans that maildir and if it finds a message, feeds it to the spam filter and removes it from the training maildir. Depending on whether or not the message was a spam or ham, it is either deleted or delivered to Inbox. It appears I am getting an error when the script deletes a mail message. I haven't checked if this message only occurs when a client is connected -- it's possible. Log excerpt: Mar 31 18:34:57 finity dovecot: IMAP(XXXXXXX(a)finity.org): Maildir /home/vmail/XXXXXXX(a)finity.org/.Spam.Unsure sync: UID inserted in the middle of mailbox (8 > 3, file = msg.FHoB:2,) Mar 31 18:34:57 finity dovecot: IMAP(XXXXXXX(a)finity.org): Disconnected: Mailbox is in inconsistent state, please relogin. Mar 31 18:35:36 finity dovecot: IMAP(XXXXXXX(a)finity.org): Corrupted index cache file /home/vmail/XXXXXXX(a)finity.org/.Spam.Unsure/dovecot.index.cache: indexid changed Jeff

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[Dovecot] convert plugin failing
by Adrian Bridgett 31 Mar '07

31 Mar '07

I'm struggling to get the convert plugin working using the Debian etch packages. When starting dovecot it was trying to create files in /.temp.hostname... convert-plugin.c looks like it has a couple of typos in it - it checks "mail" three times for NULL rather than mail, user, home. I changed this but it's getting called when these three items are set to: "maildir:/HOME_DIRECTORY_USED_BUT_NOT_GIVEN_BY_USERDB/Maildir" "dump-capability" "" I must be missing something - shouldn't the mailboxes only be converted when a user logs in? Should the conversion be skipped for the dump-capability user (whatever that is!) Thanks, Adrian -- Adrian Bridgett - adrian(a)smop.co.uk GPG key available on public key servers

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[Dovecot] Version Numbering and releases
by Peter Lindgren 31 Mar '07

31 Mar '07

Hi all, Merging the two large recent threads, my recommendation is as follows: * The Release Candidates for 1.0 should be bug fixes only. * Each new Feature, or a Feature Set, goes in a separate branch. * That branch is tested by those who need/want that feature. * When testing is completed, the branch is merged into the main trunk. This way, we will have fairly well tested features/feature sets in the main trunk which people can fairly safe download and test and deploy, if their own tests succeeds. When the feature code is merged into the main trunk, the minor version is incremented by one (1.0.x --> 1.1.0). Bug fixes increment the revision (1.1.0 --> 1.1.1). Easy to follow, easy to package for package maintainers. Also, it's easy to write Readme's and other documentation on what's changed. (And for those who think that odd versions are for development (unstable), well, they will just wait until sufficient features have been added before they think it is stable... ) Timo's new features he sees for future versions, plan them for a 2.0 or a 1.1 or whatever version number, just don't call it 1.0.2rc1 :-) Another suggestion, is to create a Bugzilla (or similar) site for dovecot. That gives us all a chance to track changes and bug fixes. /Peter, building rc29 as I write this

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[Dovecot] rc28 : can't set quotas with userdb + passwd file
by David Anderson 30 Mar '07

30 Mar '07

I'm using dovecot 1.0 rc28 - great software! I have a virtual hosting setup, with passdb and userdb both using a passwd file. I cannot get per-user quotas put in the relevant field of the userdb to work. They appear to be completely ignored; only the setting from /etc/dovecot.conf is applied. Can anyone confirm that this is working for them? If it is, can you post the relevant bits of your configuration, please? Many thanks. Kind regards, David

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[Dovecot] Freebsd 4 error DSN stat=Service Unavailable after dovecot install
by Biffy Bob 30 Mar '07

30 Mar '07

Hello everyone, I am getting an error message on FreeBSD 4 after I install dovecot. To start off, I create two regular users, testuser and testuser1. I send each user emails then I install dovecot. After installing dovecot I set up the users in Maildir format then proceed to send them emails and here is what shows up in the maillogs: Email to testuser3 - Mar 29 22:34:52 myserver sendmail[4379]: l2TMYqwj004379: from=root, size=54, class=0, nrcpts=1, msgid=<200703292234.l2TMYqwj004379(a)myserver.vwh.net>, relay=r oot@localhost Mar 29 22:34:52 myserver sm-mta[4380]: l2TMYqMi004380: from=<root(a)myserver.vwh.net>, size=342, class=0, nrcpts=1, msgid=<200703292234.l2TMYqwj004379@myserver .vwh.net>, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1] Mar 29 22:34:52 myserver sendmail[4379]: l2TMYqwj004379: to=testuser3(a)myserver.vwh.net, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pr i=30054, relay=localhost.. [127.0.0.1], dsn=2.0.0, stat=Sent (l2TMYqMi004380 Message accepted for delivery) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004380: to=<testuser3(a)myserver.vwh.net>, ctladdr=<root(a)myserver.vwh.net> (0/0), delay=00:00:00, xdelay=00:00:0 0, mailer=local, pri=30560, relay=local, dsn=5.0.0, stat=Service unavailable (something didn't work) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004380: l2TMYqMi004381: DSN: Service unavailable (something didn't work) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004381: to=myserver, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31584, relay=local, dsn=5.0.0, stat=Se rvice unavailable (something didn't work) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004381: l2TMYqMj004381: return to sender: Service unavailable (something didn't work) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMj004381: to=myserver, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=32608, relay=local, dsn=5.0.0, stat=Se rvice unavailable (something didn't work) Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004381: Losing ./qfl2TMYqMi004381: savemail panic Mar 29 22:34:52 myserver sm-mta[4381]: l2TMYqMi004381: SYSERR(root): savemail: cannot save rejected email anywhere Here is what the user looks like in /etc/passwd: testuser3:*:2400:2400:My very own test user:/home/testuser3:/sbin/nologin For the other users that have shell access, they don't get this problem. It seems to be only the users with no shell. Does anybody know of a fix for this problem?

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[Dovecot] make failed in doc/wiki
by Daniel 30 Mar '07

30 Mar '07

Hi! I have this problem with cvs (1.0 branch): [...] Making all in wiki make: don't know how to make \n. Stop in /home/leva/dovecot/dovecot/doc/wiki. *** Error code 1 Stop in /home/leva/dovecot/dovecot/doc (line 323 of Makefile). *** Error code 1 Stop in /home/leva/dovecot/dovecot (line 390 of Makefile). *** Error code 1 Stop in /home/leva/dovecot/dovecot (line 242 of Makefile). Using automake-1.9.6 and autoconf-2.59. What could be the problem? Daniel

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[Dovecot] Security hole #3: zlib plugin allows opening any gziped mboxes
by Timo Sirainen 30 Mar '07

30 Mar '07

zlib plugin allows opening gzipped mboxes as read-only mailboxes. However when using it, the mailbox name checks are bypassed so it's possible to open for example "../otheruser/somefile.gz". Only valid gzipped mbox files can be opened, and only if their name ends with ".gz". You can fix this by upgrading to v1.0.rc29 (available soon) or with this patch: http://dovecot.org/list/dovecot-cvs/2007-March/008488.html I don't think this matters much though. zlib plugin is rarely used, and those who do use it are probably using Dovecot with systems users (per-user UIDs), so the imap process wouldn't have access to other users' mbox files anyway. I found this problem when I was cleaning up the code in CVS HEAD.

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