- dovecot - dovecot.org

[Dovecot] multiple userdb/passdb
by Thomas Balsfulland 04 Jul '07

04 Jul '07

hi all, i am using debian etch with dovecot imap (version 1.0.rc15-2) and mysql-database for the virtual mailuser. all informations (username, password, mailbox format, mailbox location, quota) are find in the sql. the maildir are locates at /home/vmail/, every is working fine. now i want to use imap for the system user as well - at the moment they cant user imap because they are not find in the sql db. so i set a second userdb/passwd in the dovecot.conf for the local system-user. now the config says: auth default { passdb passwd-file { args = /etc/dovecot/localuser } passdb sql { args = /etc/dovecot/dovecot-sql.conf } userdb passwd-file { args = /etc/dovecot/localuser } userdb sql { args = /etc/dovecot/dovecot-sql.conf } } and /etc/dovecot/localuser looks: localuser1:password:1000:1000::/home/localuser1::userdb_mail=mbox:~/Mail:INBOX=~/Mail/incoming now the local user is able to authenticate, but cant acces his mailboxes the logfile says: host dovecot: imap-login: Login: user=<localuser1>,method=PLAIN, rip=195.xxx.xxx.xxx, lip=193.yyy.yyy.yyy, TLS host dovecot: IMAP(tbals): lstat(/home/vmail//localuser1/cur) failed: Permission denied host dovecot: IMAP(tbals): lstat(/home/vmail/shared) failed: Permission denied it seems dovevot ignore the settings in /etc/dovecot/localuser. could someone help? regards thomas -- thomas balsfulland tbals(a)ctrl-c.de zwischen mut und dummheit liegt nur ein grat der sich durch das vorbereitetsein unterscheidet

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[Dovecot] OT - Claws Mail on Mac OS X
by Gerard 04 Jul '07

04 Jul '07

Someone on this list recently asked regarding the availability of Claws Mail on Mac OS X architecture, A BETA release has just been issued. http://damien.krotkine.com/claws/ -- Gerard

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[Dovecot] convert plugin: endless conversion and duplicate messages
by Andrew Ziem 03 Jul '07

03 Jul '07

Hi, When an mbox has a filename with a period, the Dovecot 1.0.1 convert plugin will endlessly convert the same mbox causing duplicate messages. To reproduce, create try converting two mboxes: one with a valid name and another with an invalid name. Then, repeat the login procedure a few times. Dovecot should do something more graceful such as replacing periods with another character. Here's /var/log/mail/errors Jul 2 08:29:44 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 08:39:46 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 08:48:54 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 08:48:58 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 08:49:39 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 08:59:40 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 09:09:40 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name Jul 2 09:20:23 aslan dovecot: IMAP(crystalp): Mailbox conversion: Couldn't create mailbox Print Shop Misc.: Invalid mailbox name I didn't test other non-{alphanumeric,whitespace} characters. Other than this and my previous e-mails, our conversion from UW-IMAP mboxes went nicely. I notice the performance difference, and our users will be happy to finally have proper subfolders. Andrew

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[Dovecot] listen parm questions
by Stewart Dean 03 Jul '07

03 Jul '07

Q1: My imap server has 4 interfaces, but only one is used for imap traffic. Can I do this: listen = 10.20.30.40:10143 (when imap.mycollege.edu is 10.20.30.40) Or is there even any benefit to doing this? Q2: Can I specify more than one port....during test eval, I've had the IT dept using port 1043 for listen....which I will, of course, change to 143 when DC goes production. So my department isn't cut off by that switchover, can I do this? listen = *:10143,143 or this listen = 10.20.30.40:10143,143 I did look at the wiki but didn't see anything -- ==== 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] [Fwd: Bounce action notification]
by Timo Sirainen 03 Jul '07

03 Jul '07

Anyone have ideas why this happened? Nothing special in logs, all tss(a)iki.fi deliveries went OK. Mailman's bounce log is unhelpful. Why does it say it tried to deliver to dovecot(a)dovecot.org and when it failed it disabled my account? Why doesn't it even bother saying which remote host gave an error? Grepping mail.log for 'This user' shows nothing.

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[Dovecot] dovecot + winbind problem
by Gregorics Tamás 03 Jul '07

03 Jul '07

Hi! I'm having some problem with our setup. I have a linux server authenticating from a win2k3 domain controller via winbind and pam. When i try to log in I receive the following error messages: Jul 3 10:26:10 zeusz pam_winbind[20375]: user 'tamas' granted access Jul 3 10:26:10 zeusz pam_winbind[20375]: user 'tamas' OK Jul 3 10:26:10 zeusz pam_winbind[20375]: user 'tamas' granted access Jul 3 10:26:10 zeusz dovecot: auth(default): userdb(tamas,127.0.0.1): user not found from userdb Jul 3 10:26:10 zeusz dovecot: imap-login: Internal login failure: user=<tamas>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured But when i try other services which also use winbind via pam (like popa3d) i can log in without any problem. Any ideas?

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[Dovecot] NameSpases
by Sergey A. Kobzar 03 Jul '07

03 Jul '07

Hi guys, I have a problem with namespases in Dovecot: namespace public { separator = / prefix = Public/ location = maildir:/home/mail/public } namespace private { separator = / prefix = inbox = yes } namespace private works well, but I can't subscribe to namespace Public in Outlooks Express, The Bat! and Mozilla Thunderbird. Outlook shows error 'Mailbox doesn't exist: Public'. Same with The Bat!. maildir:/home/mail/public exists and has correct rights: # ls -alh /home/mail/public/ total 0 drwx------ 5 mail mail 184 Jul 2 21:55 . drwxr-x--- 4 mail root 104 Jul 2 21:01 .. drwx------ 2 mail mail 48 Jul 2 21:01 cur -rw-r--r-- 1 mail mail 0 Jul 2 21:54 dovecot-shared drwx------ 2 mail mail 48 Jul 2 21:01 new -rw-r--r-- 1 mail mail 0 Jul 2 21:55 subscriptions drwx------ 2 mail mail 48 Jul 2 21:01 tmp # dovecot --version 1.0.1 # uname -rsm Linux 2.6.20-gentoo-r8 i686 Any help appreciated :) -- Sergey

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[Dovecot] Leaky dovecot-auth ?
by Christian Balzer 03 Jul '07

03 Jul '07

Hello, as mentioned before, we are migrating our mailboxes from a 0.99 cluster to a 1.0.0 one. With 0.99 dovecot-auth (with LDAP as backend) was leaking quite happily and the dovecot-auth processes frequently did hit their size limit and thus were killed and restarted. Which in 0.99 at least lead to authentication failures on a busy server, as the dovecot master process just killed off the auth process w/o disabling new connections to it first and letting any current authentications finish. The activity per cluster node on the 0.99 boxes was about 700k logins (mostly pop3) per day and 5 dovecot-auth processes with a 64MB limit each. The migrated users so far are of the less active kind and on one node of the 1.0.0 cluster we see about 70k logins/day and currently the dovecot-auth process there is hovering at 123/84MB (VIRT/RES in top). It was at 121/82MB when I checked 4 hours ago and no new users have been added to that node for 2 days. Authentication backend is still LDAP, no caching, 256MB process size limit. There are just 16k users on that node at this point in time, with only 1200 distinct users generating those 70k logins/day. We will start migrating the rest of the users tomorrow and now I'm wondering: 1. How and why would the memory footprint of dovecot-auth grow when there is no change in the amount of users in the DB? 2. What will happen when the single dovecot-auth process reaches 256MB in the end? Internal housekeeping attempts of that process? A whack to the head from the master process like in 0.99 and thus more erroneous authentication failures, potentially aggravated by the fact that there is just single dovecot-auth process? I guess at the current rate of leakage we shall know the answers to #2 soon one way or another. ;) Regards, Christan -- Christian Balzer Network/Systems Engineer NOC chibi(a)gol.com Global OnLine Japan/Fusion Network Services http://www.gol.com/

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[Dovecot] Semi-static userdb...?
by John Robinson 03 Jul '07

03 Jul '07

I'm trying to add "virtual" mailboxes to a system. Real users with different uids own domains. Each domain has a passwd-file passdb. I don't want to use this passwd-file for the userdb, because I want to fix the home, mail and uid/gid settings. Can I use the static userdb in a less static manner, e.g. userdb static { args = uid=%{owner of /vmail/%d} gid=%{gid of /vmail/%d} home=/vmail/%d/users/%u mail=mbox:/vmail/%d/users/%u/mail:INBOX=/vmail/%d/users/%u/INBOX } Or is it just a bad idea to let relatively untrusted domain owners manage their own passwd-file at all...? Cheers, John.

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[Dovecot] userdb nss
by Timo Sirainen 03 Jul '07

03 Jul '07

I remembered people complaining how glibc ignores NSS errors with getpwent(), so I thought I'd see how easy it is to use NSS directly. Unless I misunderstood something, this should work: http://hg.dovecot.org/dovecot/rev/c9b49ed99d28 Tested only with "files" backend. Also it won't work with Solaris, it seems to have completely different NSS modules. Don't know about BSDs. Can someone test how it handles LDAP/NIS failures (or if it even works with them)?

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[Dovecot] Force rebuild v1.0.1
by Bruce Bodger 02 Jul '07

02 Jul '07

Haven't seen a thread discussing forcing rebuilding of indexes / cache, so the question is, if these files in a users home directory were deleted... -rw------- 1 bb admin 80 May 17 15:05 dovecot-keywords -rw------- 1 bb admin 85449 Jul 2 06:15 dovecot-uidlist -rw------- 1 bb admin 6832 Jul 2 06:15 dovecot.index -rw------- 1 bb admin 752640 Jul 2 06:19 dovecot.index.cache -rw------- 1 bb admin 95416 Jul 2 06:20 dovecot.index.log -rw------- 1 bb admin 131104 Jun 27 21:32 dovecot.index.log.2 ...would they be rebuilt by dovecot? Thank you, B. Bodger

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[Dovecot] Debian packages
by Moritz Mertinkat 02 Jul '07

02 Jul '07

Hi there, anyone interested in Debian Dovecot 1.0.1 packages? I have created a package for etch/stable... Could do that for sarge/oldstable as well. Greets, Maurice.

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[Dovecot] v1.1 max connections per user
by Timo Sirainen 02 Jul '07

02 Jul '07

v1.1 has now: # Maximum number of connections allowed for a user. The limits are enforced # separately for IMAP and POP3 connections, so you can move this setting # inside protocol {} to have separate settings for them. NOTE: The user names # are compared case-sensitively, so make sure your userdb returns usernames # always using the same casing so users can't bypass this limit! #mail_max_user_connections = 10 Is 10 a good default? Currently new connections just fail authentication with a "Maximum number of connections exceeded" error message. v2.0 hopefully will instead disconnect the oldest idling connection with IMAP.

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[Dovecot] Mbox vs maildir
by Simon Gao 02 Jul '07

02 Jul '07

> The upcoming dbox and cydir formats of course beat everything in > performance :) Is dbox in Dovecot 1.1 tree now? Is it the redesigned dbox? How close is dbox ready for general use? I am interested in testing it out. Where can I find instruction on how to configure dovecot to use dbox? Simon

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[Dovecot] auto Cc: with dovecot+mysql
by albinootje 02 Jul '07

02 Jul '07

hi, i'm migrating 1 mail-server from LDAP+postfix+courier to mysql+postfixadmin+dovecot, on a debian etch machine i have followed this howto : http://wiki.dovecot.org/HowTo/DovecotLDAPostfixAdminMySQL (changed uid and gid for usage in debian, the SVN-postfixadmin didn't work for me, so i used the stable version, and haven't tested the SASL-part yet) this works great, except the LDAP+postfix setup has for some users an automatic Cc: say, for example, 1 user, with email-address jeremy(a)mydomain.org, will also have all the emails going to jeremy(a)gmail.com so far i have failed to find out whether this can be done with postfix in that setup, following above mentioned howto (postfixadmin can do aliases, but not "auto Cc: for virtual domains afaik) can this be done by dovecot LDA maybe ? or ... can i have a dovecot.conf where certain users use LDAP instead of mysql for lookups and those kind of preferences ? grtz, albi

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[Dovecot] Differences in deliver and IMAP
by Andy Shellam 01 Jul '07

01 Jul '07

Hi I've now got Dovecot 1.0.1 authenticating with PostgreSQL for the IMAP service, but deliver doesn't seem to work the same. I'm using the "prefetch" passdb, but deliver doesn't seem to recognise it. Here's the log for a deliver attempt: dovecot: Jul 01 16:51:35 Info: auth(default): master in: USER 1 andy.shellam(a)mailnetwork.co.uk service=deliver dovecot: Jul 01 16:51:35 Error: auth(default): prefetch(andy.shellam(a)mailnetwork.co.uk): passdb didn't return userdb entries dovecot: Jul 01 16:51:35 Info: auth(default): master out: NOTFOUND 1 And here's the log for an IMAP login attempt straight after: dovecot: Jul 01 16:51:46 Info: auth(default): client in: AUTH 1 PLAIN service=IMAP lip=84.45.66.158 rip=82.165.38.62 resp=AGFuZHkuc2hlbGxhbUBtYWlsbmV0d29yay5jby51awBhYzI5Y2U4NHN5ZA== dovecot: Jul 01 16:51:46 Info: auth(default): sql(andy.shellam(a)mailnetwork.co.uk,82.165.38.62): query: SELECT <user_field> as user, <password_field> as password, <home_directory> AS userdb_home, <mail_directory> AS userdb_mail, <chroot_directory> AS userdb_chroot, <uid_field> AS userdb_uid, <gid_field> AS userdb_gid FROM <user_table> WHERE <user_field> = 'andy.shellam(a)mailnetwork.co.uk' dovecot: Jul 01 16:51:46 Info: auth(default): client out: OK 1 user=andy.shellam(a)mailnetwork.co.uk dovecot: Jul 01 16:51:46 Info: auth(default): master in: REQUEST 1 24949 1 dovecot: Jul 01 16:51:46 Info: auth(default): prefetch(andy.shellam(a)mailnetwork.co.uk,82.165.38.62): success dovecot: Jul 01 16:51:46 Info: auth(default): master out: USER 1 andy.shellam(a)mailnetwork.co.uk home=<home_directory> mail=maildir:<mail_directory> chroot=<chroot_directory> uid=<uid> gid=<gid> dovecot: Jul 01 16:51:46 Info: imap-login: Login: user=<andy.shellam(a)mailnetwork.co.uk>, method=PLAIN, rip=82.165.38.62, lip=84.45.66.158 This works if I use separate userdb and passdb queries. Does deliver not support the prefetch authentication method? Thanks, Andy.

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Re: [Dovecot] v1.1 max connections per user
by Bill Boebel 01 Jul '07

01 Jul '07

On Sat, June 30, 2007 7:50 pm, Charles Marcus said: > Timo Sirainen, on 6/30/2007 7:25 PM, said the following: >> On Sat, 2007-06-30 at 19:11 -0400, Charles Marcus wrote: >>> Timo Sirainen, on 6/30/2007 6:43 PM, said the following: >>>> v1.1 has now: >>>> >>>> # Maximum number of connections allowed for a user. The limits are enforced >>>> # separately for IMAP and POP3 connections, so you can move this setting >>>> # inside protocol {} to have separate settings for them. NOTE: The user names >>>> # are compared case-sensitively, so make sure your userdb returns usernames >>>> # always using the same casing so users can't bypass this limit! >>>> #mail_max_user_connections = 10 >>>> >>>> Is 10 a good default? >>> I'm assuming this is per IP? >> >> No. I'm not sure if it should. Perhaps. It's mostly intended to prevent >> unintentional abuse by stupid clients, so having 3+ thunderbirds open in >> different locations with each having 5 connections should probably be >> allowed. > > Ok - you said 10 was the default - but then said that 15 (3 TBirds x 5) > connections should be allowed, which is more than 10... so... you just > meant that one could accommodate that by upping this limit to 15? I like 15. That way it is high and isn't as likely to affect existing installations unless they manually set it to something lower. Or if you want to have a separate default for POP vs IMAP, I'd use 5 for POP and 15 for IMAP.

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[Dovecot] Copyright notices in code
by Timo Sirainen 30 Jun '07

30 Jun '07

I thought about committing this change to all .c files: Removed all Copyright Timo Sirainen comments. They weren't always correct and the year numbers were rarely updated when something was changed. Copyright is owned by the creator by default in practically all countries, there's no need to advertise it everywhere. Can anyone think of reasons why this wouldn't be a good idea?

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Re: [Dovecot] connection dropped by imap
by Mantas 30 Jun '07

30 Jun '07

apache log say nothing. dovecot log : dovecot: Jun 30 10:56:06 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:06 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:06 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured dovecot: Jun 30 10:56:06 Info: IMAP(diana(a)aaaaa.lt): Disconnected: Logged out dovecot: Jun 30 10:56:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:56:07 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured dovecot: Jun 30 10:56:07 Info: IMAP(diana(a)aaaaa.lt): Disconnected: Logged out dovecot: Jun 30 10:57:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:57:07 Info: auth(default): passwd(diana(a)aaaaa.lt,127.0.0.1): unknown user dovecot: Jun 30 10:57:07 Info: imap-login: Login: user=<diana(a)aaaaa.lt>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured when error "connection dropped by imap" appear, allways login procedure repeated 3 times (in log file). On Fri, 29 Jun 2007 23:24:12 +0200, Philipp Wollermann <philipp(a)igowo.de> wrote: > Mantas wrote: >>> when i create imap account in mail client (ex: outlook, thunderbird) > it's >>> allright. but if i want login with this account to webmail (i have 2 >>> webmail: squirrelmail and roundcube) commonly i get error. squirrelmail >>> say: Connection droped by imap. roundcube say nothing(white screen). > But >>> sometimes i can login. >>> > So.. what exactly appears in your system logfiles in /var/log when you > try to login and it does not work? Shouldn't that be the first thing to > look for? :) > > Regards, > Philipp

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[Dovecot] connection dropped by imap
by Mantas 30 Jun '07

30 Jun '07

hello, when i create imap account in mail client (ex: outlook, thunderbird) it's allright. but if i want login with this account to webmail (i have 2 webmail: squirrelmail and roundcube) commonly i get error. squirrelmail say: Connection droped by imap. roundcube say nothing(white screen). But sometimes i can login. and i see one thing... when i restart apache, i can login above 1-2 hours, but later i can't login. i restart apache again and again i can login 1-2 hours. please help

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[Dovecot] Document variable modifiers in pop3_uidl_format
by Ben Winslow 29 Jun '07

29 Jun '07

Attached is a trivial patch to document the fact one can use variable modifiers in pop3_uidl_format. -- Ben Winslow <rain(a)bluecherry.net>

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[Dovecot] wiki.dovecot.org double-escapes capcha info
by Ben Winslow 29 Jun '07

29 Jun '07

The "capcha" on wiki.dovecot.org seems to be double-escaping HTML entities in the informational message, such that the wiki displays "Captcha to prevent wiki spam, write Dovecot here:" [sic.] When I dutifully entered "Dovecot," it didn't work, saying "You didn't provide the correct captcha. Use the browser's Back button and try again, or register an account to avoid this." [sic] It took a few minutes for me to realize what was going on and simply enter "Dovecot" for the capcha... -- Ben Winslow <rain(a)bluecherry.net>

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[Dovecot] dovecot help
by Andy Fadich 29 Jun '07

29 Jun '07

Hello, I have a mail server which I upgraded yesterday. OLD: Redhat 9 sendmail (very old version) UW ipop3d usermin with readmail module for webmail access (very old version) NEW: Fedora Core 6 sendmail 8.13.8 Usermin for webmail again dovecot 1.0.0 # /etc/dovecot.conf protocols: pop3 login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/pop3-login mail_location: mbox:/home/%u/mail:INBOX=/var/spool/mail/%u mail_executable: /usr/libexec/dovecot/pop3 mail_plugin_dir: /usr/lib/dovecot/pop3 pop3_uidl_format: %08Xv%08Xu auth default: passdb: driver: pam userdb: driver: passwd Everything is working great, besides a few glitches here and there. However, When accessing mailboxes via webmail (usermin) an email shows up with a subject of DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA. As far as I can tell, this is an IMAP folder directory portion of the mailbox file that should be hidden. We don't use IMAP at all, and it is confusing people when they see this message that never was in their webmail before. Anyone know how to hide, remove or otherwise fix? Thank you in advance. Andy

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[Dovecot] FreeBSD NFS file locking mechanism
by Tony Tsang 29 Jun '07

29 Jun '07

Hi all, I have some machines running FreeBSD and dovecot deployed. User's home dir is on NFS mount and I've found that dovecot only works with dotlock file locking mechanism, fcntl and flock failed. Now it causes problem with thunderbird (thunderbird is cachine connections) waiting forever and I noticed that dovecot is trying to acquire a lock but unsuccessful since the lock file is in place. Is it possible to use file locking other than dotlock on FreeBSD NFS mounted homedir? How do I achieve this? Thanks a lot. Tony Tsang.

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[Dovecot] Server 1.0.1 migration: Maildir : UID inserted in the middle of mailbox
by damien chambe - EGS 29 Jun '07

29 Jun '07

Hello all, Since a migration from dovecot 1.rc16 to Dovecot 1.0.1 + new server, every day I have a lot of errors like this : Jun 21 17:42:34 dovecot1 deliver(damien.chambe(a)egs-gestion.fr): msgid=<467A9B3E.5070605(a)egs-gestion.fr>: saved mail to INBOX Jun 21 17:42:34 dovecot1 postfix/pipe[10242]: 92DD11FA8B: to=<damien.chambe(a)egs-gestion.fr>, relay=dovecot, delay=0, status=sent (egs-gestion.fr) Jun 21 17:42:34 dovecot1 postfix/qmgr[2724]: 92DD11FA8B: removed Jun 21 17:42:37 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Maildir /mnt/baie/hula/dovecot/maildir/damien.chambe sync: UID inserted in the middle of mailbox (374 > 1, file = 1182330228.P30307Q0M224874.dovecot1:2,ST) Jun 21 17:42:37 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Disconnected: Mailbox is in inconsistent state, please relogin. Jun 21 17:51:41 dovecot1 dovecot: imap-login: Login: user=<damien.chambe(a)egs-gestion.fr>, method=PLAIN, rip=10.6.1.104, lip=10.5.3.38 Jun 21 17:51:41 dovecot1 dovecot: IMAP(damien.chambe(a)egs-gestion.fr): Corrupted index cache file /opt/dovecot/indexes/damien.chambe/.INBOX/dovecot.index.cache: indexid changed After this error, all UID are regenerated. And, when the user logs in, all headers are sent back to the client (IMAP / thunderbird 1.5.x or 2.0.0.4). No email are lost or duplicated, but it cause a huge traffic on our DSL lines, and user are complaining... There's also other errors related to UID: Jun 21 16:11:01 dovecot1 deliver(pr(a)egs-gestion.fr): rename(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist.lock, /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Jun 21 16:11:01 dovecot1 deliver(pr(a)egs-gestion.fr): file_dotlock_replace(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Jun 21 16:11:02 dovecot1 deliver(pr(a)egs-gestion.fr): /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist: next_uid was lowered (374 -> 373) Jun 21 16:11:02 dovecot1 deliver(pr(a)egs-gestion.fr): msgid=<467A85CB.50009(a)fica.fr>: saved mail to INBOX Jun 21 16:11:02 dovecot1 dovecot: IMAP(pr(a)egs-gestion.fr): rename(/mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist.lock, /mnt/baie/hula/dovecot/maildir/pr/dovecot-uidlist) failed: No such file or directory Here's the context: Our Dovecot server had to be changed due to a hardware problem I was forced to use SUSE SLES 10 for the new one, instead of SLES 9 on the old server. X86-32 I've kept the same configuration files for postfix, dovecot. We use dovecot deliver. Old postfix version was 2.1.1, now I have 2.2.9 During the migration, I've changed dovecot 1.rc16 to dovecot 1.0.0 When I saw this error, I upgraded to dovecot 1.0.1, but same problem (I use suse rpm packages ) I have 400 mailbox, all Maildir. The problem happens 50 times a day, so not on every mail received. I store mails on NFS, and index on local disk. There's only one dovecot server, so no multiple access. I've tried to remove all index files, and remove dovecot-uidlist, all is correctly re-created, but the problem remains. Could it be an NFS locking problem ? Since only mail are stored on maildir + NFS, and index on local disk, so I didn't set lock_method or nmap_disable Could it be related to this: see email from from Doug Concil : [Dovecot] NFS lock contention for dovecot-uidlist on may 17 , 2007 ? dovecot -n # 1.0.1: /etc/dovecot/dovecot.conf protocols: imap pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login login_user: dovecotlogin login_process_per_connection: no login_processes_count: 5 max_mail_processes: 2048 first_valid_uid: 120 first_valid_gid: 12 default_mail_env: maildir:/mnt/baie/hula/dovecot/maildir/%n:INDEX=/opt/dovecot/indexes/%n mail_location: maildir:/mnt/baie/hula/dovecot/maildir/%n:INDEX=/opt/dovecot/indexes/%n mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugins(default): quota imap_quota mail_plugins(imap): quota imap_quota mail_plugins(pop3): mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv auth default: verbose: yes passdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf userdb: driver: ldap args: /etc/dovecot/dovecot-ldap.conf socket: type: listen master: path: /var/run/dovecot/auth-master mode: 384 user: dovecot group: mail plugin: quota: maildir:storage=1500000:messages=40000 Thanks, -- Cordialement, Damien Chambe EGS 42 bld jules janin - BP 240 - 42006 Saint Etienne Cedex 1 Tel : 04 77 49 48 16 Fax : 04 77 49 48 45 Site institutionnel : http://www.groupe-laurent.com Site catalogue : http://ecat.groupe-laurent.com

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