- dovecot - dovecot.org

[Dovecot] deliver + quota failure
by Mark Ruijs 02 Nov '06

02 Nov '06

I use Dovecot's deliver as the LDA for Postfix in a virtual user setting. My maillog reads: Oct 22 00:17:51 mail dovecot: auth(default): master in: USER 1 mark.ruys(a)in2sports.net service=deliver Oct 22 00:17:51 mail dovecot: auth-worker(default): sql(mark.ruys(a)in2sports.net): SELECT maildir AS home, 5000 AS uid, 5000 AS gid, CONCAT('dirsize:storage=', round(quota/1000)) AS quota FROM mailbox WHERE username = 'mark.ruys(a)in2sports.net' AND active = 1 Oct 22 00:17:51 mail dovecot: auth(default): master out: USER 1 mark.ruys(a)in2sports.net home=in2sports.net/mark.ruys/ uid=5000 gid=5000 quota=dirsize:storage=10240 Oct 22 00:17:51 mail deliver(mark.ruys(a)in2sports.net): msgid=<00c801c6f55e$af416fb0$8801a8c0@Moskou>: save failed to INBOX Oct 22 00:17:51 mail deliver(mark.ruys(a)in2sports.net): open(in2sports.net/mark.ruys//.temp.mail.in2sports.net.12777.5c70c02bb158bd1 a) failed: No such file or directory The reason is, I'm out of quota. I expected some kind of bounce, but the message is killed by Amavis because of a bad header: Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit Your message was automatically rejected by Dovecot Mail Delivery Agent. The following reason was given: Quota exceeded --12684/mail.in2sports.net Content-Type: message/disposition-notification Reporting-UA: mail.in2sports.net; Dovecot Mail Delivery Agent Final-Recipient: rfc822; mark.ruys(a)in2sports.net The problem is, there is no recipient (header is missing). Anyone a clue how to fix it? Thanks for some directions. Mark Ruys Config: - Dovecot rc 10 - postfix-2.3.3-2.mysql.sasl2.vda.fc4 dovecot.conf: protocol imap { mail_plugins = quota imap_quota } protocol lda { postmaster_address = postmaster(a)in2sports.net mail_plugins = quota auth_socket_path = /var/run/dovecot/auth-master } postfix/main.cf: dovecot_destination_recipient_limit = 1 virtual_transport = dovecot virtual_create_maildirsize = yes virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql/limits.cfg virtual_mailbox_limit_override = yes virtual_overquota_bounce = yes

2 1

[Dovecot] valid_chroot_dirs question
by Luca Corti 02 Nov '06

02 Nov '06

Hello, I've got a dovecot setup using PAM and real system users. In this setup I also use pure-ftpd to give local users ftp access to their $HOMEs. To have pure-ftpd chroot into the user home i replaced /home/user with /home/user/./ in /etc/passwd. Unfortunately this breaks Dovecot this way: Oct 23 18:18:20 localhost dovecot: Invalid chroot directory '/home/foo' (user foo) (see valid_chroot_dirs in config file) and dovecot.conf says # ':' separated list of directories under which chrooting is allowed for mail # processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too). # This setting doesn't affect login_chroot or auth_chroot variables. # WARNING: Never add directories here which local users can modify, that # may lead to root exploit. Usually this should be done only if you don't # allow shell access for users. See doc/configuration.txt for more information. #valid_chroot_dirs = Now if I set valid_chroot_dirs = /home everything works, but the WARNING pretty much scares me since user foo HAS shell access. Is this safe? Is there a way to avoid this? Why I can't chroot to /home/foo/./ if I can to /home/foo ? I'm on 1.0rc10 thanks

2 1

[Dovecot] Dovecot imap bug
by Lauri Jesmin 02 Nov '06

02 Nov '06

Hello, i got such error from dovecot RC10, Oct 24 10:38:58 raud dovecot: [ID 107833 mail.info] imap-login: Login: user=<eleppik>, method=PLAIN, rip=xxx, lip=yyy Oct 24 10:39:03 raud dovecot: [ID 107833 mail.error] IMAP(eleppik): file mbox-sync-rewrite.c: line 405 (mbox_sync_read_and_move): assertion failed: (need_space == (uoff_t)-mails[idx].space) This is Solaris on x86, 32 bit executable, compiled with gcc, and there is enough room for index creation. -- Lauri Jesmin <lauri.jesmin(a)ut.ee> Tartu Ülikool

2 1

[Dovecot] Installation of Dovecot
by Steven F Siirila 02 Nov '06

02 Nov '06

When I configure Dovecot to conform to our directory hierarchy, it insists on adding 'dovecot/' to the prefixes I specify. Is there any way to inhibit this? My configure command is: ./configure --prefix=/opt/dovecot --sysconfdir=/etc/opt/dovecot \ --libexecdir=/opt/dovecot/libexec --localstatedir=/var/opt/dovecot \ --without-sql-drivers --with-ssl=openssl \ --with-ssldir=/etc/opt/dovecot My problem is with the resulting directories: /opt/dovecot/libexec/dovecot is used instead of /opt/dovecot/libexec /var/opt/dovecot/lib/dovecot is used instead of /var/opt/dovecot/lib /var/opt/dovecot/run/dovecot is used instead of /var/opt/dovecot/run It seems that Dovecot assumes that libexecdir and localstatedir refer to non-Dovecot-specific directories, and adds 'dovecot/' to the path. Is there any way to avoid this? In our environment )we use: /opt/XXX Optional software XXX /etc/opt/XXX Configuration for optional software XXX /var/opt/XXX Variable data for optional software XXX (Which makes for easier upgrades) -- Steven F. Siirila Office: Lind Hall, Room 130B Internet Services E-mail: sfs(a)umn.edu Office of Information Technology Voice: (612) 626-0244 University of Minnesota Fax: (612) 626-7593

2 1

[Dovecot] Maildir++?
by Marten Lehmann 02 Nov '06

02 Nov '06

Hello just to have up2date records: Is the current dovecot release capable of the maildirsizefile as described in http://www.exim.org/exim-html-4.63/doc/html/spec_html/ch26.html#id2643923 ? Regards Marten

2 1

[Dovecot] Fw: POP 23 problem
by Manoj Fernandez 02 Nov '06

02 Nov '06

Hi there I am using Dovecot on Ubuntu 6 LTS forPOP3 services. The user account created at installation works fine and Iam able to log to POP3 services by telnetr. When I created a another user and tried tologin via telnet this is what happens telnet XXX.XXX.XXX.XXX 10 + OK Dovecot ready user XXXX + OK pass XXX +OK logged in Connection tohost lost and session terminates. Pls advise what could be the problem Tks Manoj Sri Lanka

2 1

[Dovecot] imap process crashing with "file mail-cache-fields.c: line 26: unreached"
by JB Zimmerman 02 Nov '06

02 Nov '06

Hoping someone's seen this and/or can help...heh. I'm running the at rpm of dovecot, version dovecot-1.0-0_27.rc10.el4.at. I'm running it on RHEL4, up to date. We're using Maildir (we're upgraded from a Courier-IMAP installation) and things are working...but...we have a few users with very large mailboxes (not their inboxes) where they archive stuff (200k+ messages). When they try to read those mailboxes, the imap server instantly drops the connection, and I get the following in the log: --cut-- Oct 27 11:20:11 hostname dovecot: IMAP(user): file mail-cache-fields.c: line 26: unreached Oct 27 11:20:11 hostname dovecot: child 27514 (imap) killed with signal 6 --cut-- host and user names changed to protect the guilty. I have tried increasing the imap process size max to 512, as well as doubling the IMAP command size to 131072 (bytes)? Neither made a difference. *other* mailboxes on the same account work fine. The error happens *immediately*, not after a timeout, as soon as they select the mailbox in their client (we're using Evolution, and have tried pine as well...I'm working on trying other clients). The Maildir caching optimization settings in the conf are left to default. Any ideas? Many thanks. J.B. Zimmerman --

3 3

Re: [Dovecot] Clustering (replication and proxying) plans for the future
by Bill Boebel 02 Nov '06

02 Nov '06

On Tue, October 24, 2006 2:31 pm, Timo Sirainen <tss(a)iki.fi> said: > The replication could work simply by sending the transaction logs' > contents to the replicatio process which passes it onto other servers, > which finally sync their local mailboxes based on that data. Since > Dovecot already is able to sync mailboxes based on the transaction log's > contents this should be pretty easy to implement. > > Of course the new mails' contents also have to be sent. This could be > prioritized lower than the transaction traffic, so that each server > always has very up-to-date view of the mailbox metadata, but not > necessarily the contents of all the mails. > > If the server finds itself in a situation that it doesn't have some > specific mail, it'll send a request to the replication process to fetch > it ASAP from another server. The reply will then take the highest > priority in the queue. Is your primary goal with this replication to add redundancy or to distribute load such as for shared mailboxes? I've thought about the redundancy side of this a lot, but not so much about load distribution. It sounds like you're going for load distribution, but... If the goal is redundancy, I'd suggest that mailbox state is less important than the mail data. Index files can be recreated from the data, and would not even be needed on the secondary server(s) unless the primary fails. So I'd put a higher priority on getting the mail content to the secondary servers. If the goal is to distribute load for shared mailboxes, then your prioritization makes sense. Also, if the goal is redundancy, this design can be simplified a lot by having one master and one or more slaves. All modify operations would go to the master, so that you do not need global locks. Different sets of users would belong to different namespaces, so that you can have multiple replication paths in your cluster. You'd also want an API for the replication process so that third-party applications that modify mailboxes can log those changes so that they are replicated. And in that case, the replication process could be made generic enough so that it can be used to replicate any set of files, with or without Dovecot. Bill

1 0

[Dovecot] http://dovecot.org/tools/
by Gavin Henry 01 Nov '06

01 Nov '06

Dear all, Could this be added to http://dovecot.org/tools/ http://cpan.org/authors/id/G/GH/GHENRY/create_dovecot_shares-1.05 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/

2 3

[Dovecot] CRASH: mail-cache-fields.c crash - new info, hacked 'solution'
by JB Zimmerman 01 Nov '06

01 Nov '06

I'm baaaaack. :-) I've managed to implement a suggestion from Hans Morten Kind from this list that seems to have stopped the crashing. However, my hack - commenting out a call to i_unreached() - makes me queasy because I have no idea of the ramifications of it (I don't habitually code, myself). So I wanted to lay it out for y'all in case this is a problem that you feel should be looked at. So, here's my situation. Using dovecot-1.0.rc10 downloaded from dovecot.org. Built an RPM locally on my machine (as opposed to prior attempts, which used the AT rpms), which is running RHEL 4AS with all updates. Did *not* configure in postgres, mysql, sqlite, ldap-auth. Other than that, stock (openssl included, eg) - some file locations taken from AT RPMs' spec (redhat specific file locs). No patches performed. SPEC available if y'all think it'd help; the RPM built with no complaints, installed same. Using Maildir format, upgraded from a Courier install, so .folder.subfolder structure. Error behavior: When a user attempted to open a folder containing large numbers of messages (roughly 100k+ messages, as far as we can tell) they immediately got an error saying the server has disconnected. On the server side, I got this in the log (hostname 'magneto' obviously) ---cut--- Nov 1 15:18:16 magneto dovecot: IMAP(joeuser): file mail-cache-fields.c: line 26: unreached Nov 1 15:18:16 magneto dovecot: child 17599 (imap) killed with signal 6 ---cut--- Now, the folder in question is a folder of CVS commit messages (hence the size). If I go into the folder ("/home/joeuser/Maildir/.GNOME CVS commits/") and do 'rm -f dovecot-*' and then have the user try again, then they can open the folder and get a message list. dovecot will rebuild the various index files. However, as soon as they click on an individual message, bam, the same error behavior - and from then on, they can't get into the folder again unless we remove their dovecot files again. We tried this using Evolution, mutt and pine as the clients. All exhibited identical behavior. This is coming over TLS. NOW THE FIX: I made a change to the source (gasp!) that honestly I have no idea the ramifications of, but it has...well, not *fixed*, but sorta fixed it. As per Hans Morten Kind, I commented out the i_unreached() call in field_has_fixed_size(). After this, the mail is readable as is the folder list, but now there is an error message in the log. First things first, here's the change I made to dovecot-1.0.rc10/src/lib-index/mail-cache-fields.c: ---cut--- @@ -23,7 +23,7 @@ return FALSE; } - i_unreached(); +/* i_unreached(); */ return FALSE; } ---cut--- ...and here's what now happens in the log, to the same mail folder as above: ---cut--- Nov 1 15:59:42 magneto dovecot: IMAP(joeuser): Corrupted index cache file /home/joeuser/Maildir/.GNOME CVS commits/dovecot.index.cache: field header names corrupted ---cut--- At that point, I deleted the cache files again, and the error goes away. I also notice that the index.cache file in that folder is much, much larger than it was, from which I posit that the above error was because the crashing imap process had left an incomplete index file. Removing it thus forced a rebuild with the new code which seems to have fixed the problem. Thank you all for your patience. I hand this willingly over to the list. jb -- ------------------------------------ J.B. Zimmerman jbz(a)ximian.com Network Administrator Ximian - http://www.ximian.com ...a tiny little division of Novell.

1 0