- dovecot - dovecot.org

[Dovecot] mail_extra_groups and home directory permissions
by Joe Cooper 26 Oct '06

26 Oct '06

Hi all, I've got a virtual hosting environment, where each user lives in /home/domain/homes/user, and the mailbox is Maildir within that directory. I've been running into a permissions problem, because it seems Dovecot doesn't get the users group membership (which seems odd, but I'm not confident enough of my comprehension of Dovecot to call say it looks like a bug). In short, when Dovecot hits the /home/domain directory which is owned by domain:domain and set to 750 permissions, it gets a permission denied, despite the user having the needed group membership to traverse these directories. So, in an effort to work around this problem, I came upon the mail_extra_groups option, which seems to allow me to drop dovecot into additional groups. If I add the domain group to this list, dovecot is able to traverse to the correct directory and all works exactly as I want it to with the domain directories being set to 750 permissions. Hooray! My only question, since this is not the documented purpose of this option, is: Is it safe to do this? Am I opening up some other kind of security problem by setting this option to include all domain groups? Thanks for any thoughts anyone might have on this...

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[Dovecot] "Real" users AND Virtual users
by Muhamad A. Martoprawiro 25 Oct '06

25 Oct '06

Dear all, How can I use dovecot for both "real" users and virtual users? I could configure dovecot for real users, by using these lines in /etc/dovecot.conf: default_mail_env = maildir:%h/Maildir auth default { passdb pam { } userdb passwd { } } To accept virtual users, I used these lines: default_mail_env = maildir:/usr/local/virtual/%u/ auth default { passdb sql { args = /etc/dovecot-mysql.conf } userdb sql { args = /etc/dovecot-mysql.conf } } But, again, how to accept both kind of users? I use Postfix as mail server, and use LDAP/PAM for real users that have home-directory on the system. My OS is Mandriva 2007, and I use dovecot that is bundled as an RPM package (dovecot 1.9 rc7) in the OS. The content of file /etc/pam.d/dovecot: #%PAM-1.0 auth required pam_stack.so service=system-auth account required pam_stack.so service=system-auth Thanks. Regards, Muhamad

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[Dovecot] P0P3 problems
by Nick 25 Oct '06

25 Oct '06

Hi, I'm setting up Dovecot on a Linux (Ubuntu) server and IMap works but P0P3 doesn't. When I try to get the eMail, it appears to do everything it should (no errors) but nothing gets downloaded. I'm also a little confused with this: If I select either "Password authentication source" Unix passwd or shadow file (using WEBmin or text edit the config file) Dovecot errors: Unknown setting: line 648: and yet, if I take it out it works fine. How does Dovecot get the passwords if no source is included ??? Please advise, Thanks, Nick. . . 1(973)614-8385 _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ . . . . . . . . Please visit my Web Hosting/Design Business at: http://MyHost.org -=[ The prices are great - as is the service ]=- . . . . . . . . _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/ _/

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[Dovecot] performance problems with rc10 and solaris 10
by Dominik Saar 25 Oct '06

25 Oct '06

Hi, i have 2 dovecot imap server running on solaris 10 The primary server with dovecot 1.0.alpha4 is running with best performance on Sun Sparc E4k5 with 8x 450MHz The secondary with rc10 has ugly performanceproblems on Sun E450 wth 4x 450MHz. Every new imap process takes permanent 25% cpu usage List the folder and fetch message are both slowy! Both servers are configred with ldap backend preventive i deleted for rc10 the complet index and controlfiles, because the spooldir is a sync from the masterserver with dovecot alpha4. I thought its a little bit slowy because of my 30.000 mails. the indexfiles are created now, but the still ugly slow .... For debugging i compiled rc10 again --with-debug=yes and start dovecot with solaris truss truss tells nothing to explain this behavor logentrys from dovecot has this warnings: --> dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing pool 'storage' with: 1024 dovecot: Oct 18 14:51:47 Info: IMAP(saar): dirsize quota limit = 750000kB dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing data stack with: 32768 dovecot: Oct 18 14:51:47 Warning: IMAP(saar): Growing data stack with: 65536 dovecot: Oct 18 14:51:48 Warning: IMAP(saar): Growing data stack with: 131072 dovecot: Oct 18 14:51:48 Warning: IMAP(saar): Growing pool 'uidlist record_pool' with: 32768 <-- also i compiled rc10 --with-notify=none, no result to ensure it isn´t the solaris system, i compiled alpha4. Result: good performance Any ideas? Cheers Dominik

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[Dovecot] Unsolved : mbox-sync-rewrite.c : assertion failed
by Jakob Curdes 25 Oct '06

25 Oct '06

Some days ago I wrote about an inaccessible mailbox after an upgrade from 0.99.14 to 1.0rc10. Today I get this problem with another mailbox but it seems to be it is not only related to the upgrade : - user comes back from holiday, does not see his inbox : dovecot: Oct 24 18:51:09 Error: IMAP(abcd): file mbox-sync-rewrite.c: line 405 (mbox_sync_read_and_move): assertion failed: (need_space == (uoff_t)-mails[idx].space) (he accessed it last with the old dc version) Solution : moving account to other server, copy everything over to the old account and it worked. This is what I did and afterwards the mailbox was readable. Now the user goes back to his PC (I made my work from another machine) and opens his mailclient (with the still existing account) and BINGO dovecot crashes again on the mailbox as berfore. Once ist has crashed on it, it than crashes always, even if you make a new account or remove the index. So I suppose it has rather to do with cached information in the client than with the upgrade itself. But nothing the client sends should be able to crash the server ! Hoping for an idea, Jakob Curdes

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[Dovecot] Status of Shared Folders?
by Charles Marcus 24 Oct '06

24 Oct '06

Hi Timo, I'm just curious... is the Wiki up to date regarding the status of Shared Folder support for Dovecot? Specifically, does Dovecot still have a problem with Read-only (for certain users) maildirs using Shared folders defined via namespaces? I'm about ready to start testing a rollout, but wanted to find out what to expect with regard to Shared Folders - we use them extensively right now (Courier-imap), so it is important for us. Having per-user read/unread flags will be a very nice bonus, but I don't see anything about support for those... -- Best regards, Charles Marcus I.T. Director Media Brokers International 678.514.6200 x224 678.514.6299 fax

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[Dovecot] LDAP Dovecot Configuration Problem
by kleiton＠pcs.com.br 24 Oct '06

24 Oct '06

Good Morning I have a problem with my dovecot configuration, somepeople can help-me sending me a example of a dovecot with ldap configuration ? dovecot.conf slapd.conf I'm have - dovecot-1.0-0.beta8.2.fc5 - kernel-smp-2.6.17-1.2157_FC5 - openldap-2.3.19-4 - Fedora Core 5 Today we connect using PAM but we like connect by LDAP because we have some problems. Thanks !

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[Dovecot] converting from courier questions
by Aaron P. Martinez 24 Oct '06

24 Oct '06

I currently run postfix and courier on my mail servers with squirrelmail. The problem with courier is it seems to run so slow. The webmail takes forever to load if you have many mails. I have this set up in virtual domains with all longin and path info in an mysql database. I just joined the list and DID google before asking, hope this isn't a common question. With courier it looks for a "homedir" and then a "maildir".. I tried doing a query as such: user_query = SELECT Homedir and Maildir AS home, VUID AS uid , VGID AS gid FROM users WHERE Email_address = '%u' to no avail, is my sql wrong or can you not cat the homedir and maildir fields together to create the complete path to home? . i got around the homedir problem by setting mail_chroot = /var/spool/postfix/virtuals (is this the general way, only way?) and then in my dovecot-mysql.conf i have user_query = SELECT Maildir AS home, VUID AS uid , VGID AS gid FROM users WHERE Email_address = '%u' This almost worked but as i was watching the logs it was looking for /var/spool/postfix/virtuals/<somedomainname>/Maildir//Maildir In courier the "Maildir" is not implied, it has to be spicified in the database. I have a LOT of users and would love to avoid chaning every line in my database. or add another filed just for dovecot. I would also like the ability to switch back and forth for testing with courier.. Is there anyway that this can be done? Thanks in advance, Aaron

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[Dovecot] LDAP authentication blank password
by Matheus Antonio Oliveira 24 Oct '06

24 Oct '06

People, I have a situation: when use a passwd LDAP module against "microsoft active directory" and one user send a blank password the authentication module returns: "ERR [IN-USE] Internal login failure. Refer to server log for more information."; after this the authentication module never authenticate again "ERR Temporary authentication failure." Thanks in advanced. Trying 0.0.0.0... Connected to 0 (0.0.0.0). Escape character is '^]'. +OK Dovecot ready. user xyz@domain +OK pass <BLANK> -ERR [IN-USE] Internal login failure. Refer to server log for more information. Connection closed by foreign host. Trying 0.0.0.0... Connected to 0 (0.0.0.0). Escape character is '^]'. +OK Dovecot ready. user xyz@domain +OK pass correct-password -ERR Temporary authentication failure. -- Matheus Antonio Oliveira

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[Dovecot] Creating MySQL db
by Gerard Seibert 24 Oct '06

24 Oct '06

I was just wondering if anyone was using or aware of a program to create MySQL Data Bases for use with Dovecot. For Postfix, there is the 'Postfixadmin' application. I have not seen anything similar for Dovecot and was wondering if one existed. My system consists of all virtual users. -- Gerard Never attribute to malice what can adequately be explained by incompetence.

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