- dovecot - dovecot.org

[Dovecot] Re maintenance of the dovecot-uidlist files
by Dann Daggett 04 Jun '08

04 Jun '08

Greetings all, I am new to dovecot, using ver 1.0.13 and IMAP with ~/Maildir delivery. I have noticed that the entries in the dovecot-uidlist files don't seem to get updated when an email is deleted or moved to .Trash. It appears that this list list would just keep growing over time, being full of no longer used filenames, and must tend to increase its processing overhead. I have also noticed that if I manually delete that file and the 3 other dovecot* files, that it gets rebuilt with only what's present. Is there provision in the dovecot code to automatically clean this up periodically? If so, are there any configuration params for it? If not, what is the preferred method for maintenance in this regard? Thank you, Dan

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Re: [Dovecot] Error using antispam plugin
by Juan Asensio Sánchez 04 Jun '08

04 Jun '08

I compile Dovecot from the source packages of the Debian repository. I don't know if it has been correctly compiled with that flag, i have executed: # CFLAGS=-g3 dpkg-buildpackage -rfakeroot -b When running gdb again, i get diffrenet output but i think that this information is not relevant: (gdb) cont Continuing. Program received signal SIGSEGV, Segmentation fault. 0x080b294d in mail_get_physical_size () (gdb) bt full #0 0x080b294d in mail_get_physical_size () No symbol table info available. #1 0xb7df0200 in quota_try_alloc () from /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so No symbol table info available. #2 0xb7df4b01 in quota_plugin_deinit () from /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so No symbol table info available. #3 0xb7df4edc in quota_plugin_deinit () from /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so No symbol table info available. #4 0xb7de8036 in antispam_save_finish () from /usr/lib/dovecot/modules/imap/lib90_antispam_plugin.so No symbol table info available. #5 0x080b5aa6 in mailbox_save_finish () No symbol table info available. #6 0x0805ad8f in _start () No symbol table info available. (gdb) cont Continuing. Program terminated with signal SIGSEGV, Segmentation fault. The program no longer exists. (gdb) 2008/6/4 Juan Asensio Sánchez <okelet(a)gmail.com>: > I compile Dovecot from the source packages of the Debian repository. I > don't know if it has been correctly compiled with that flag, i have > executed: > > # CFLAGS=-g3 dpkg-buildpackage -rfakeroot -b > > When running gdb again, i get diffrenet output but i think that this > information is not relevant: > > (gdb) cont > Continuing. > > Program received signal SIGSEGV, Segmentation fault. > 0x080b294d in mail_get_physical_size () > (gdb) bt full > #0 0x080b294d in mail_get_physical_size () > No symbol table info available. > #1 0xb7df0200 in quota_try_alloc () from > /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so > No symbol table info available. > #2 0xb7df4b01 in quota_plugin_deinit () from > /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so > No symbol table info available. > #3 0xb7df4edc in quota_plugin_deinit () from > /usr/lib/dovecot/modules/imap/lib10_quota_plugin.so > No symbol table info available. > #4 0xb7de8036 in antispam_save_finish () from > /usr/lib/dovecot/modules/imap/lib90_antispam_plugin.so > No symbol table info available. > #5 0x080b5aa6 in mailbox_save_finish () > No symbol table info available. > #6 0x0805ad8f in _start () > No symbol table info available. > (gdb) cont > Continuing. > > Program terminated with signal SIGSEGV, Segmentation fault. > The program no longer exists. > (gdb) > > 2008/6/3 Johannes Berg <johannes(a)sipsolutions.net>: >> On Tue, 2008-06-03 at 22:16 +0300, Timo Sirainen wrote: >>> On Tue, 2008-06-03 at 21:11 +0200, Johannes Berg wrote: >>> > On Tue, 2008-06-03 at 21:06 +0200, Juan Asensio Sánchez wrote: >>> > > Wow. Thanks for your quick answer. I don't know much about compiling >>> > > or debugging. Could anyone say me how to do that or give some tips? >>> > >>> > well, add -g3 somewhere to the CFLAGS when building dovecot. >>> >>> -g is added by default. Does -g3 add anything useful compared to it? >> >> I think it only adds debug information for macros. >> >> johannes >> >

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[Dovecot] Error using antispam plugin
by Juan Asensio Sánchez 03 Jun '08

03 Jun '08

Hi When activating antispam plugin in imap protocol, when sending an email, Evolution/Thunderbirdkeeps infinitely "Sending authentication information", and Dovecor logs shows "dovecot: May 28 10:14:35 Error: child 6910 (imap) killed with signal 11"; lots of empty folders in /tmp are created with names like "antispam-mail-ZvyWeZ". I am using Dovecot1.1 rc15 compiled from Debian source repositories (http://xi.rename-it.nl/debian/) and last version of antispam plugin, obtained with git. Any idea or help to debug? Thanks.

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[Dovecot] expire plugin - setgid failed
by e-frog 03 Jun '08

03 Jun '08

Hello all, I'm trying to get the expire plugin working, but still having issues even with 1.1RC5. If I run the expire tool I get the following error: server:~# dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool Fatal: setgid(100) failed with euid=2005, gid=0, egid=0: Operation not permitted Same thing with --test: server:~# dovecot --exec-mail ext /usr/local/libexec/dovecot/expire-tool --test Fatal: setgid(100) failed with euid=2005, gid=0, egid=0: Operation not permitted gid 100 = users, uid 2005 = helmut The user mail box has the following permissions: root@LINKSTATION:/home/helmut# ll -n drwx------ 22 2005 100 4.0k May 17 13:14 mail Any help is appreciated. Thanks, Helmut server:~# dovecot -n # 1.1.rc5: /etc/dovecot.conf log_path: /var/log/mail/dovecot.log info_log_path: /var/log/mail/dovecot.log ssl_disable: yes disable_plaintext_auth: no login_dir: /var/run/dovecot/login login_executable: /usr/local/libexec/dovecot/imap-login login_process_size: 16 max_mail_processes: 16 mail_location: maildir:%h/mail umask: 7 mail_plugins: quota imap_quota mail_log expire namespace: type: public separator: / prefix: Public/ location: maildir:/home/public/mail:CONTROL=%h/mail/control/public:INDEX=%h/mail/index/public list: yes subscriptions: yes namespace: type: private separator: / inbox: yes list: yes subscriptions: yes auth default: verbose: yes passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 user: dovecot group: mail master: path: /var/run/dovecot/auth-master mode: 384 plugin: quota: maildir quota_rule: *:storage=1GB quota_rule2: Trash:storage=10%% expire: Trash 1 expire_dict: proxy::expire dict: expire: db:/var/lib/dovecot/expire.db

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[Dovecot] v1.0.14 released
by Timo Sirainen 03 Jun '08

03 Jun '08

http://dovecot.org/releases/1.0/dovecot-1.0.14.tar.gz http://dovecot.org/releases/1.0/dovecot-1.0.14.tar.gz.sig Since v1.1.0 release is getting near, this could well be the last v1.0 release. I'll still fix important bugs, but if the bugfix is large or affects only few people it'll probably get fixed only in v1.1 releases. * mbox: Enable mail_privileged_group while creating INBOX. - IMAP: Fixed a rare crash in FETCH BODY/BODYSTRUCTURE - IMAP: If mailbox is selected with EXAMINE, ignore flag changes - proxy: Login success reply was sent in two IP packets, which confused some IMAP/POP3 clients - ACL plugin leaked memory a bit - dovecot-auth: allow_nets setting with network masks didn't work correctly with big endian machines.

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[Dovecot] How to set MDNSent flag on a large amount of mails?
by Patrick Nagel 03 Jun '08

03 Jun '08

Hi, after having moved a big mail archive to IMAP, I've now got the following problem: The MUA asks to send an MDN on all those old messages that contain the 'Disposition-Notification-To' header when opened. I'd like to set the $MDNSent flag on those (>10000 in a deeply nested directory structure) mails. After having read http://wiki.dovecot.org/MailboxFormat/Maildir I wrote a script that changed the filename of mails in all directories that contained the header, so that the filename contained a 'b' in the last part of the filename (after the comma), because I found '1 $MDNSent' in Maildir/dovecot-keywords. I then discovered that there can be a 'dovecot-keywords' file in each directory, and all of those files can have different flags in different order. Do I really need to write a script that evaluates each dovecot-keywords file, figures out which letter corresponds to the flag and rename the files (per directory) accordingly? Isn't there a more simple way? Patrick. -- STAR Software (Shanghai) Co., Ltd. http://www.star-group.net/ Phone: +86 (21) 3462 7688 x 826 Fax: +86 (21) 3462 7779 PGP key: https://stshacom1.star-china.net/keys/patrick_nagel.asc Fingerprint: E09A D65E 855F B334 E5C3 5386 EF23 20FC E883 A005

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[Dovecot] spamassassin, postfix with dovecot lda?
by George Mamalakis 03 Jun '08

03 Jun '08

Hi all, I am trying to setup a mail server using postfix (virtual_mailboxes), spamassassin and dovecot, along with SQL where appropriate. From my research so far I realized that, for several reasons, it is required for me to use dovecot LDA instead of maildrop, local, procmail or other alternatives. My configuration was working flawlessly, until spamassassin per-user configuration came to play. If I just wanted an MTA anti-spam gateway, I could directly call spamassassin via master.cf, or through some helper "content-filter-application" (like amavis or amavisd-new), and everything would work just fine (I tried and tested many such configurations with success). But when antispam per user preferences became my concern (Bayesian filters and classifier), I realized that spamd should be called by the LDA. With procmail this was a trivial issue, with dovecot-lda I was unable to find any solution on the web or other documentation. So my question is as follows: Is there a way to call spamc from dovecot-LDA (and/or dovecot-sieve), or is there an alternate way to do this for a site with virtual mailboxes configured with dovecot-lda? Thank you all in advance, regards, -- George Mamalakis IT Officer, Department of Electrical and Computer Engineering, Aristotle Univ. of Thessaloniki, Greece

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[Dovecot] v1.1.rc6 released
by Timo Sirainen 03 Jun '08

03 Jun '08

http://dovecot.org/releases/1.1/rc/dovecot-1.1.rc6.tar.gz http://dovecot.org/releases/1.1/rc/dovecot-1.1.rc6.tar.gz.sig This is it. The first v1.1 release that actually deserves the "release candidate" name. It contains everything I require from v1.1.0 release. There are two bugs left that I'd like to get fixed, but they won't block v1.1.0 release: * index_mailbox_set_recent_uid() assert (reported by Diego Liziero) * Maildir not always finding new messages and returning them as empty (reported by Anders). The major change in v1.1.rc6 release is the SORT indexing half-rewrite. I hadn't much stress tested that code before, and once I started I just kept finding more and more weird bugs and it became extremely difficult to figure out how to fix them, so I finally decided to just redesign how it's supposed to work and then implemented that. The resulting sort code is a lot cleaner and it should also perform better (although it could still be improved a bit: the basic binary searching could be replaced with one that first binary searches between already-looked-up sort-strings and only after that binary searches the resulting space which requires slower sort-string lookups). Hopefully there are also no stupid bugs left like returning messages in wrong sort order. :) I've been wasting time this past week getting new stuff for my new apartment, but that's nearly done now. I think (hope) I'm going to be more productive in here, there are less neighbours behind walls/floors (just 1), so less potential for annoying noises. :) Thinking also seems to work better when there's more space to walk around. And finally, the changes since v1.1.rc5: * Index file format changed a bit. If an older Dovecot v1.1 reads index files updated by rc6+, they may give "Invalid header record size" or "ext reset: invalid record size" warnings. v1.0 won't give these errors. * IMAP: LIST .. RETURN (X-STATUS) command return now LIST entries before STATUS entries. * zlib plugin: Uncompress if the message begins with zlib header instead of looking at the 'Z' flag. This fixes copying with hard links. Based on a patch by Richard Platel. + IMAP: SORT index handling code was half-rewritten to fix several bugs when multiple sessions were sorting at the same time. The new code is hopefully also faster. + Maildir: If POP3 UIDL extra field is found from dovecot-uidlist, it's used instead of the default UIDL format (or X-UIDL: header). This allows easily preserving UIDLs when migrating from other POP3 servers. Patch by Nicholas Von Hollen @ Mailtrust. + Maildir: ,W=<vsize> is now always added to maildir filenames + deliver: Avoid reading dovecot-uidlist's contents if possible. + Added %T modifier = Trim whitespace from end of string - IMAP: Fixed some bugs in LIST-EXTENDED implementation. - IMAP: If client tries to change the selected mailbox state while another command is still running, wait until the command is finished. This fixes some crashes and other unwanted behavior. - allow_nets userdb setting was broken with big endian CPUs

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[Dovecot] overview of patches used in Fedora
by Dan Horák 03 Jun '08

03 Jun '08

Hi, I have gone through the patches that are used in the Fedora package and probably only the "mkcert-permissions" [1] can be considered to be included upstream. It is dated into package version 1.0-0.beta2.3, but I cannot find any particular reason for the inclusion (like a bug in bugzilla, etc.). Some (winbind support, quota warnings) were obsoleted by dovecot 1.1, two are used for distro specific settings. So the only real patch that remains is the "pam_setcred" [2] patch that fixes https://bugzilla.redhat.com/show_bug.cgi?id=146198 Current state of the package for Fedora is at http://cvs.fedoraproject.org/viewcvs/rpms/dovecot/devel/ Dan [1] http://cvs.fedoraproject.org/viewcvs/rpms/dovecot/devel/dovecot-1.0.beta2-m… [2] http://cvs.fedoraproject.org/viewcvs/rpms/dovecot/devel/dovecot-1.0.rc2-pam… -- Fedora and Red Hat package maintainer

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Re: [Dovecot] v1.1.rc8 released
by Timo Sirainen 03 Jun '08

03 Jun '08

On Mon, 2008-06-02 at 16:04 -0700, Andrew Roberts wrote: > On Tue, 3 Jun 2008, Timo Sirainen wrote: > > > + deliver: Added -c parameter to provide path to delivered mail. > > This allows maildir to save identical mails to multiple recipients > > using hard links. > > According to the wiki, deliver already uses a -c parameter to specify the > path to an alternate configuration file. Is this incorrect, or is this > functionality going away? I meant to say -p parameter.. And thanks for reminding, I'll update the wiki as well.

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