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[Dovecot] enourmous amount of disc writes
by Rainer Sigl 17 Jun '09

17 Jun '09

Hi List, on my mailserver (exim4, dovecot 1.0.0, postgresql, ubuntu dapper, about 500 users) I record an enourmous amount of disc writes (up to 18000 blocks written each second) in the time where most of users are active. This IO activity causes wait-states on the disc interface (RAID5) and finally slows down my mailmachine. Is there a explanation for these disc writes respectively is there a possibility to minimize this activity. Stopping Dovecot on this machine causes stopping most of the disc activity. Regards Rainer Sigl -- ----------------- Rainer Sigl, | email: sigl(a)mpe.mpg.de MPI f. extraterrestrische Physik, | phone: +49 (89) 30000-3557 Postfach 1312, | fax: +49 (89) 30000-3569 D-85741 Garching, Germany | web: http://www.mpe.mpg.de/~sigl/

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[Dovecot] expire-tool --test: timestamps
by e-frog 16 Jun '09

16 Jun '09

$ /usr/sbin/dovecot --exec-mail ext expire-tool --test Info: Trash: timestamp 1243963680 (Tue Jun 2 19:28:00 2009 ) -> 1244307774 (Tue Jun 2 19:28:00 2009 ) Both human readable timestamps are equal as ctime() returns a pointer to a static buffer. In addition there are some newline characters added by ctime(). The following patch is a try to fix this for 1.2.rc5. --- expire-tool.c.orig 2009-06-06 13:29:31.000000000 +0200 +++ expire-tool.c 2009-06-06 15:17:07.000000000 +0200 @@ -351,9 +351,13 @@ static void expire_run(bool testrun) } else if (!testrun) dict_set(trans, key, new_value); else { - i_info("%s: timestamp %s (%s) -> %s (%s)", - userp, value, ctime(&expire_time), - new_value, ctime(&oldest)); + char *expire_ctime = i_strdup(ctime(&expire_time)); + char *oldest_ctime = i_strdup(ctime(&oldest)); + i_info("%s: timestamp %s (%.24s) -> %s (%.24s)", + userp, value, expire_ctime, + new_value, oldest_ctime); + i_free(expire_ctime); + i_free(oldest_ctime); } } }

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[Dovecot] v1.2.rc5 imap ignores configuration reloads
by Pascal Volk 16 Jun '09

16 Jun '09

Hi Timo, after changing the mail_executable in the imap {…} section I have to restart Dovecot v1.2.rc5, otherwise the changes are not accepted. With Dovecot v1.1.x (tested with v1.1.11 and v1.1.16) it's enough to send a SIGHUP to the dovecot process. Regards, Pascal -- The trapper recommends today: c01dcofe.0916521(a)localdomain.org

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[Dovecot] compressed mbox patch
by Axel Thimm 16 Jun '09

16 Jun '09

Some ages ago there existed a compressed mbox patch, but now all I can find are posting about it. Does such a beast exist and would it remotely apply to today's dovecot? If not, is there any hope that something like that emerges? Thanks! -- Axel.Thimm at ATrpms.net

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[Dovecot] Marking message read after delivering to folder
by Nikolay Shopik 16 Jun '09

16 Jun '09

I've copying messages automatically to sent folder if it sent via our SMTP. Problem is Deliver can't mark message as read on deliver. Does that possible to accomplish using global sieve rule? I'm not familiar with sieve code syntax, know very basics. Also I know there different implementation in Sieve between 1.0, 1.1 and 1.2. Thanks

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[Dovecot] Authentication cache, failure to login after changed password
by Tom Sommer 16 Jun '09

16 Jun '09

Hi, I have an issue with the authentication cache. When a user changes his password, the cache doesn't seem to get flushed. Meaning the user is unable to log in to his IMAP account after changing his password. Flow: - Log into IMAP account using pass1 - Approved - Stored in auth cache - Change password to pass2 in MySQL - Log into IMAP account using pass2 - Access is denied - Restart dovecot - Log into IMAP account using pass2 - Approved I'd really like to continue to use the auth cache, is there any solution to the above? perhaps a way to debug the cache and auth process? I wasn't able to activate auth_debug without restarting Dovecot and solving the problem. Using version 1.1.1, MySQL userdb, with "nopassword=Y". Maybe it's due to nopassword? Thanks -- Tom

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[Dovecot] Dovecot v1.2 rawlog in dovecot.conf trouble
by Steffen Kaiser 16 Jun '09

16 Jun '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, using Dovecot v1.2 changeset: 9126:b745911012bb This line in dovecot.conf make trouble (wrapped in mail): mail_executable = /usr/local/dovecot-1.2.rc5unpatched/libexec/dovecot/rawlog /usr/local/dovecot-1.2.rc5unpatched/libexec/dovecot/imap # sbin/dovecot -F Fio_loop_handle_add: epoll_ctl(1, 0): Operation not permitted Error: imap dump-capability process killed with signal 13 Fatal: Invalid configuration in /usr/local/dovecot-1.2.rc5unpatched/etc/dovecot.conf If I remove rawlog from dovecot.conf, dovecot -F starts up nicely. ============== I strace'd the problem and finally the following program is exec'ed (wrapped in mail): bunch of env-vars /usr/local/dovecot-1.2.rc5unpatched/libexec/dovecot/rawlog /usr/local/dovecot-1.2.rc5unpatched/libexec/dovecot/imap '[dump-capability' '??]' When I start this line (incl. all the env vars) as root, I get: * BAD [ALERT] imap binary must not be started from inetd, use imap-login instead. When I remove rawlog, I get: ILoading modules from directory: /usr/local/dovecot-1.2.rc5unpatched/lib/dovecot/imap [snip] IMAP4rev1 [...snip...] What I interprete as OK. Bye, - -- Steffen Kaiser -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iQEVAwUBSjYR2nWSIuGy1ktrAQJH5QgAu8lB/k2fC1ebjzJyU9Sl/8BCf4XwdjkP Z6GGtLi5wZFlW2kGyNr9gJ4Cb5VXQjzs32MKu5h1yH4uLPagy9m6TJzikp4zdiMl lt7HRxZcSA/eVzEx/HZeoezv9hBzqwP9uGJ0G1drORHqfSqPKFjWER3HhDOfAeEe MQcA9onTe08bAB3+95vHCih5Sy7c7sjKgFVUv1NOhKp/cRaALZB7LUZQhaJEOyQ8 fwtXniXCF9JRfkjmpoZT2nRSBd+M6DrSjBshCyWEQOfCX0PgeYM0ytwCsTgGUH6V xj18c0dTUuaf/G8FPzL3c8O3bbFwFlgn7b+0MvhDQdcOAiYnDjUmLA== =cTQj -----END PGP SIGNATURE-----

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[Dovecot] Expire/Quota error
by Matt Rude 16 Jun '09

16 Jun '09

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Using both 1.2rc5 and hg version a9d3108d0cec from today, when I run the expire tools program, I receive the following error. # /usr/local/sbin/dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --test /usr/local/sbin/dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --testError: dlopen(/usr/local/lib/dovecot/imap/lib10_quota_plugin.so) failed: /usr/local/lib/dovecot/imap/lib10_quota_plugin.so: undefined symbol: mountpoint_get # 1.2.rc5: /usr/local/etc/dovecot.conf # OS: Linux 2.6.27.21-170.2.56.fc10.i686 i686 Fedora release 10 (Cambridge) ext3 protocols: imap imaps managesieve listen: *:143 ssl_listen: *:993 ssl_cert_file: /etc/postfix/SSL/mail.mattrude.com.cert ssl_key_file: /etc/postfix/SSL/mail.mattrude.com.key login_dir: /usr/local/var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_user: postfix mail_location: maildir:/var/spool/virtualmailboxes/%d/%u/:INDEX=/var/spool/virtualmailboxes/.Index/%d/%u/ mail_plugins: autocreate expire quota imap_quota zlib auth default: mechanisms: plain login cram-md5 cache_size: 128 cache_ttl: 600 passdb: driver: sql args: /etc/dovecot-mysql.conf userdb: driver: sql args: /etc/dovecot-mysql.conf socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: path: /var/run/dovecot/auth-master mode: 384 user: virtualmail group: virtualmail plugin: autocreate: Drafts autocreate2: Sent autocreate3: Trash autocreate4: Junk autocreate5: Junk.IsSpam autocreate6: Junk.IsNotSpam autocreate7: Save autosubscribe: Drafts autosubscribe2: Sent autosubscribe3: Trash autosubscribe4: Junk autosubscribe5: Junk.IsSpam autosubscribe6: Junk.IsNotSpam autosubscribe7: Save auth_socket_path: /var/run/dovecot/auth-master expire: Trash 1 Junk 3 expire_dict: proxy::expire quota: maildir:User quota quota_rule: *:storage=10M quota_rule2: Trash:storage=10%% quota_rule3: Junk:storage=20%% sieve: /var/spool/virtualmailboxes/%d/%u/dovecot.sieve sieve_storage: = /var/spool/virtualmailboxes/%d/%u/ trash: /etc/dovecot-trash.conf dict: expire: db:/var/spool/imap/expire.db - -- Matt Rude - lists(a)mattrude.com - http://www.mattrude.com PGPkey: 5115332 https://mail.mattrude.com/keys/0x5115332E.asc Fingerprint: 0012 4A0A 3720 6268 1802 F66D 7DCA C0A7 5115 332E -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkopu4AACgkQfcrAp1EVMy5PrACeNtxU+z0NBFpmH0vxyO0ikWAy DucAnRLiJeOirhupfjB4ebqZ0uq8fmfA =Cow4 -----END PGP SIGNATURE-----

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[Dovecot] User with multiple domains
by Peter Sparkes 16 Jun '09

16 Jun '09

Hi, I am running Dovecot on Linux Debian with Exim4 with a number multiple domains. I have a new user who want to use a single username with more than one domain eg: test(a)domainone.com test(a)domaintwo.com test(a)domainthree.com Exim is working fine with mail correctly with mail going to /home/domainone.com/test/Maildir/new/ /home/domaintwo.com/test/Maildir/new/ /home/domainthree.com/test/Maildir/new/ The Dovecot password files are in /home/domainone.com/etc/passwd.dovecot /home/domaintwo.com/etc/passwd.dovecot /home/domainthree.com/etc/passwd.dovecot When trying to retrieve email using Dovecot for test(a)domaintwo.com the password is not recognised although it is for test(a)domainone.com. Help Please Peter

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[Dovecot] Aging Password
by Jacopo Cappelli 16 Jun '09

16 Jun '09

I use dovecot with shadow support and i have a problem with aging password, if the password is ended dovecot continue to log me in... It's possibile to disable login if the password is ended? Hi, Jacopo -- Linux, Windows Xp ed MS-DOS (anche conosciuti come il Bello, il Brutto ed il Cattivo). -- Matt Welsh

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