October 2008 - dovecot

[Dovecot] Separate quotas not displayed correctly
by Laurent Blume 21 Nov '08

21 Nov '08

Hello all, My system is set up to have quotas both on /var/mail, where emails are received, and on /export/home, where users' homedirs are. But the client (Thunderbird) shows the same /export/home values both for the Inbox and for the folders in the homedir, so a user cannot know where she stands on her /var/mail use. This is Dovecot 1.1.5. As per the wiki, the dovecot.conf file contains this: quota = fs:INBOX:mount=/var/mail quota2 = fs:Others:mount=/export/home A sample user: # quota -v testimap Disk quotas for testimap (uid 1143): Filesystem usage quota limit timeleft files quota limit timeleft /export/home 6490 10000 15000 0 0 0 /var/mail 0 20000 25000 0 0 0 When Icheck the Quota tab in the Properties of the Inbox, the field contains "Others", and the value are 6490 out of 10000. Any idea why this doesn't display the value of /var/mail? Laurent -- / Leader de Projet & Communauté | I'm working, but not speaking for \ G11N http://fr.opensolaris.org | Bull Services http://www.bull.com / FOSUG http://guses.org |

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[Dovecot] FW: nfs troubles
by Bas van Oosterum 21 Nov '08

21 Nov '08

Hi all, I upgraded to dovecot 1.1.6 to be able to use NFS. Got a little issue: I can't move mail to another IMAP folder (so I can't delete to: moving to .trash does not work. Error message Oct 31 11:07:45 jozua-mailserver dovecot: IMAP(nicolette(a)kerknet.org): fdatasync_path(/var/mail/kerknet.org/nicolette/Maildir/.Trash/cur) failed: Invalid Argument I tried to use ll sorts of locking: no difference Who can help? Regards, Bas

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[Dovecot] Auth Issues - Urgent - Help!
by David Cunningham 21 Nov '08

21 Nov '08

After a few hours of running, I get tons of the following errors in my logs: dovecot: Oct 08 07:41:50 Error: auth(default): ldap(user(a)domain,x.x.x.x): Request queue is full I removed the username and IP, obviously. Any idea how to stop this? I have about 5 Thousand users using horde that login ever 1-5 minutes to refresh their page. I assume it is a setting, but I am confused as to why it doesn't happen almost right away. It seems to take some time to build up. Please help! This is taking my webmail system down hourly.

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[Dovecot] patch: list shared namespace
by Bernhard Herzog 19 Nov '08

19 Nov '08

Hi, I've been working on a patch for dovecot 1.2 from the Kolab branch (http://hg.intevation.org/kolab/dovecot-1.2_kolab-branch/) that implements listing of shared namespaces. I've got something that works in some basic way but is still missing some pieces. See the attached patch, which also contains some installation and configuration notes. Implementation notes: One of the main problems the patch addresses is getting a list of all users that have mailboxes the logged in user can see. The patch uses a dict to cache information about which users have at least one mailbox that is visible to other users. The dict doesn't cache which other users, though. The cache entry for a given user is updated whenever the dovecot-acl-list file in the maildir root directory is updated. This ties the implementation to a specific acl backend to an extent, but that shouldn't be a problem at the moment. Another problem is that namespaces for all those users have to be created. The patch does that in shared-storage.c when the shared storage is created. At this stage of development of the patch that works well enough, I think, but it might be better to update the namespaces whenever a list iterator is created. To avoid unnecessary coupling between the shared namespace code and the ACL plugin, the shared namespace code has a hook that it calls when it needs a list of all the users who may have mailboxes visible to the current user. The ACL plugin sets that hook and uses the dict to produce that list. This way, the ACL plugin depends on the shared namespace code but not the other way round and all the dict handling is in the ACL plugin. I'm not sure the new hook is really needed. The patch could perhaps just as well extend the acl_next_hook_mail_storage_created and acl_next_hook_mailbox_list_created functions to do the namespace creation when they're called for a shared storage or mailbox list. Problems: All of my tests so far involved a shared namespace of the form namespace shared { separator = / prefix = users/%%u/ location = maildir:.../var/mail/%%u:... subscriptions = no list = yes hidden = no } Also, let's assume two users, ford and arthur with ford's "INBOX/hhgttg" available to arthur as "users/ford/INBOX/hhgttg". Arthur may not list ford's INBOX, though. In the following the current user is always arthur. I found the following problems: - LIST response includes namespaces the user doesn't really have access to. E.g. if there's another user, zaphod who's made some mailbox available to somebody else, but not arthur, arthur still sees * LIST (\Noselect \HasChildren) "/" "users/zaphod" Not sure it's worth fixing this, though. - List with "%" doesn't list all intermediate mailboxes. On the one hand arthur sees this: x LIST "" "*" ... * LIST (\Noselect \HasChildren) "/" "users/ford" * LIST (\HasNoChildren) "/" "users/ford/INBOX/hhgttg" x OK List completed. OTOH, with "%" only this: x LIST "" "users/ford/%" x OK List completed. cyrus shows x LIST "" "users/ford/%" * LIST (\Noselect \HasChildren) "/" "users/ford/INBOX" x OK List completed. At least Kontact resp. KMail rely on this. - The dovecot-acl-list is not always rebuilt, even when it should have been, AFAICT. In particular, if the file exists but is empty, it's never updated, even when ACL later change. Maybe this is a bug in the Kolab branch. Cheers, Bernhard -- Bernhard Herzog | ++49-541-335 08 30 | http://www.intevation.de/ Intevation GmbH, Neuer Graben 17, 49074 Osnabrück | AG Osnabrück, HR B 18998 Geschäftsführer: Frank Koormann, Bernhard Reiter, Dr. Jan-Oliver Wagner

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[Dovecot] store sieve scripts with maildir
by Samuel HAMEAU 17 Nov '08

17 Nov '08

Hi, I am using dovecot 1.0.10 and pysieved, in a master/slave cluster with ldap (auth_bind=yes). For conceptuals reasons, i would like to keep on the same partition the mailstore + sieve scripts. I have try to set "sieve" and "home" variables under the "plugin" section with an absolute path, and i have tried to override home variable in user_attrs (dovecot-ldap.conf) as well with an absolute path, but in vain. Is there a solution ? sam

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[Dovecot] First release (v0.1.0) of the new Sieve implementation for Dovecot v1.2
by Stephan Bosch 11 Nov '08

11 Nov '08

Hello Dovecot users, Finally, after little more than a year, I finished the first release of the new Sieve implementation for Dovecot. The main reason for rewriting the Sieve engine is to provide more reliable script execution and to provide better error messages to users and system administrators. Also, since the Sieve language evolves quickly, with new language extensions published every year, the aim is to provide support for quickly extending the engine with new features. This implementation aims to comply to RFC8225 and it provides support for the following Sieve language extensions: * fileinto * reject * envelope * encoded-character * vacation * subaddress * relational * regex * imap4flags * copy * include * body * variables In comparison to the old CMU Sieve plugin, I added support for the very useful variables extension. However, the notify extension is notably missing. This will be implemented for next major release (0.2.x). Refer to the README file for a full list of its features: http://hg.rename-it.nl/dovecot-libsieve/raw-file/0.1.0/README Installation ------------ The source package is available as follows: http://www.rename-it.nl/dovecot/1.2/dovecot-1.2-sieve-0.1.0.tar.gz http://www.rename-it.nl/dovecot/1.2/dovecot-1.2-sieve-0.1.0.tar.gz.sig Alternatively, it can be cloned from the mercurial repository: hg clone http://hg.rename-it.nl/dovecot-libsieve The compilation procedure is identical to the cmusieve plugin (http://wiki.dovecot.org/LDA/Sieve). Don't forget to execute ./autogen.sh first if you obtained the sources through mercurial. This release will not compile against Dovecot versions older than v1.2.alpha3. The configuration is very similar to the original plugin as well. The most notable difference is the name of the plugin, which is simply 'sieve' in stead of 'cmusieve'. After compilation, the Sieve engine can be verified before deployment using the included test suite. This is done by executing `make test` in the top of the source tree. The test suite is known to finish flawlessly on the i386 and amd64 platforms. The test suite is not very comprehensive yet, as it only tests the evaluation of scripts and omits testing the actual execution of actions. As this release contains about 30k effective lines of fresh code, bugs will eventually surface. Make sure that you provide enough information to reproduce the problem if you report bugs, i.e. the script and the mail message that caused the problem and/or relevant log entries. Have fun testing the new Sieve plugin. Don't hesitate to notify me when there are problems. Regards, -- Stephan Bosch stephan(a)rename-it.nl IRC: Freenode, #dovecot, S[r]us

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[Dovecot] antispam plugin claims "antispam signature not found"
by Jakob Curdes 09 Nov '08

09 Nov '08

Hi, I am trying to setup the antispam plugin using the direct dspam backend. I have set antispam_signature = X-DSPAM-Signature in dovecot.conf and in all mails I have signature lines like X-DSPAM-Signature: 1,49084a24139132188715614 but still, if I try to move a mail into the spam folder, i get the IMAP error message "antispam signature not found". I thought it might have to do with permissions and made sure that the user running dovecot is able to execute the dspam binary. I also tried to enable debug logging to syslog (via the .config file in the make process) but I do not see any debug messages showing up; where should these go? to the mail facility? Perhaps somebody who has a working setup can shed some light on this? Yours, JC

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[Dovecot] feature request for dovecot 1.2 Master users/passwords for virtual domain admins
by Robert Schetterer 06 Nov '08

06 Nov '08

Hi Timo, currently superadmins can be configured in dovecot i.e in mysql as "superadmins" this means the can log in in any mailbox on the server this is a very nice feature in real world scenarios specially for support people in postfixadmin i.e there are also defined domainadmins ( this is for delegate usermail creation/delete etc in the postfixadmingui ) in mysql it would be nice to have or simply use postfixadmins mysql domainadmins in mysql table entries to login for domainadmins only login to mailboxes of their related maildomain this would be also massiv helpfull for postmasters/support people in a full virtual setup perhaps you might get this in dovecot 1.2 before closing at beta stage -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria

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[Dovecot] antispam - Unable to determine the destination user
by Romanczyk Guillaume 05 Nov '08

05 Nov '08

Hello, I'm trying to install dovecot antispam plugin and I've some problems with dspam user. When I move a mail out of 'SPAM' folder I have this error in my /var/log/messages : Oct 28 17:01:41 tony2 imap: antispam: /usr/bin/dspam --source=error --class=innocent --signature=47de4679174462472577556 ... Oct 28 17:01:41 tony2 dspam[24313]: Unable to determine the destination user Oct 28 17:01:41 tony2 dspam[24313]: DSPAM agent misconfigured: aborting I've tried to install it by 'emerging' and compiling from sources but with the same result. plugin .config : BACKEND=dspam-exec DOVECOT=/usr/include/dovecot INSTALLDIR=/usr/lib/dovecot/imap USER=vpopmail GROUP=vpopmail #(same result with different user/group) antispam_dspam_args = --user;$EXT@$USER DEBUG=syslog DEBUG_VERBOSE=1 PLUGINNAME=antispam Mail server configuration : - NetQmail (1.05-r8) - Vpopmail (5.4.16) - Dovecot (1.1.4-r1) - dspam (3.8.0-r13) All these packages are emerge without mysql support. If someone is able to give me some help... -- Guillaume Romanczyk Itaapy <http://itaapy.com> Tel +33 (0)1 42 23 67 45 9 rue Darwin, 75018 Paris Fax +33 (0)1 53 28 27 88

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[Dovecot] v1.2.alpha1 released
by Timo Sirainen 02 Nov '08

02 Nov '08

http://dovecot.org/releases/1.2/alpha/dovecot-1.2.alpha1.tar.gz http://dovecot.org/releases/1.2/alpha/dovecot-1.2.alpha1.tar.gz.sig This is the only v1.2.alpha announcement I'm going to send to dovecot-news list. Next announcement will be for either v1.2.beta1 or v1.2.rc1. I'm hoping that v1.2 stabilizes pretty soon. There are no huge changes like there were in 0.99->1.0 or 1.0->1.1, so most of the bugs are probably related to new features. I'm already running v1.2 myself and it's gone through heavy stress testing with my imaptest tool, so I'm expecting it to be stable enough for real world testing with not-all-that-important servers. It's safe to jump between v1.1 and v1.2 at any time or even have them concurrently accessing the same mailboxes. Dovecot v1.2 has a lot of new IMAP extensions implemented. The biggest change comes from CONDSTORE extension which adds a new concept of "modification sequences" (modseq for short). Each message has a modseq that increases whenever a flag is changed or when the message is expunged. The client can keep track of the highest seen modseq and request only changes done since the modseq. See QRESYNC (RFC 5162) for more information. Dovecot starts keeping track of the modseqs only when the first "CONDSTORE/QRESYNC enabling command" is executed. Before that no disk space is used for modseqs. When modseqs are enabled dovecot.index file uses 8 bytes per message more space. Other implemented IMAP extensions are: ESEARCH, SEARCHRES, WITHIN, ID and CONTEXT=SEARCH. Added thread indexes to optimize IMAP THREAD command. Only the first half of threading is currently optimized, the rest will hopefully follow later. Added a non-standard X-REFERENCES2 threading algorithm where threads are sorted by their latest message instead of the thread root message. There is also no base subject merging. This may be renamed and become part of SEARCH=INTHREAD extension some day. SEARCH=INTHREAD is still a draft, but the INTHREAD search key is already implemented by Dovecot v1.2. This is mostly useful with virtual mailboxes. Virtual mailboxes: http://wiki.dovecot.org/Plugins/Virtual Then there are also some internal API changes which will make some things easier. For example lib-storage now allows handling multiple different users at the same time.

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