- dovecot - dovecot.org

[Dovecot] service_count=0 for imap and pop3
by Mark Moseley 16 Nov '10

16 Nov '10

This is copy-pasted from Timo's comment in the "Todays Performance Data for 2.0.x" thread, but I didn't want to hijack that thread. In it, Timo says: <snip> service imap { service_count = 0 } (i.e. reuse imap processes) reduced the system CPU usage to almost nothing. But if you use different UIDs for different users you can't do that. </snip> Is that safe to do in imap and/or pop3? Or at least no more insecure than using service_count=0 for imap-login and pop3-login? Since I saw that comment I've been googling around and grepping the wiki but I can only find instances of using it with "service imap-login", not "service imap" or "service pop3". The mention in Timo's comment that it reduces the CPU usage by a lot got my attention, esp for pop3. We're already using service_count=0 for pop3-login and imap-login.

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Re: [Dovecot] Local node indexes in a cluster backend with GFS2
by Aliet Santiesteban Sifontes 16 Nov '10

16 Nov '10

Should I set mmap_disable = yes when storing indexes in a GFS2 shared filesystem?? 2010/11/15 Aliet Santiesteban Sifontes <alietsantiesteban(a)gmail.com> > Ok, I will create a LUN also as a shared clustered storage for indexes, any > consideration to have into account when the indexes are shared by many > nodes... > thank you all... > > 2010/11/15 Timo Sirainen <tss(a)iki.fi> > > On 15.11.2010, at 6.44, Aliet Santiesteban Sifontes wrote: >> >> > mail_location = >> > sdbox:/var/vmail/%d/%3n/%n/sdbox:INDEX=/var/indexes/%d/%3n/%n >> > >> > /var/vmail is shared clustered filesystem with GFS2 shared by node1 and >> > node2 >> > >> > /var/indexes is a local filesystem at the node, so each node has his own >> > /var/indexes stuff on ext3 and raid1 for improving performance, I mean >> each >> > node a different /var/indexes of its own. >> >> This is a bad idea. With dbox the message flags are only stored in index >> files, so if you lose indexes you lose all message flags. Users won't be >> happy. >> > >

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[Dovecot] (no subject)
by Radio Tron 15 Nov '10

15 Nov '10

http://aigipe.it/here.php

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[Dovecot] Dovecot will not start, error in stat(/var/run/dovecot)
by Frank Collette IV 15 Nov '10

15 Nov '10

Error: stat(/var/run/dovecot) failed: Invalid argument Fatal: Invalid configuration in /etc/dovecot.conf Can someone please help me resolve this issue? I'm willing to pay if required to get this back up! I've been down since 11PM Saturday. Thanks, Frank

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[Dovecot] proctitle woes with 2.0.7 vs. 2.0.6
by Clemens Schrimpe 15 Nov '10

15 Nov '10

Hello - I just noticed, that there seems to be a change in the way "process titles" are being set between 2.0.6 and 2.0.7: Behavior of 2.0.6: (ps aux | fgrep dovecot) ------------------ root 30803 0.0 0.0 601540 708 ?? S 1:08AM 0:00.00 dovecot/log _dovecot 30802 0.0 0.0 601544 624 ?? S 1:08AM 0:00.00 dovecot/anvil root 30801 0.0 0.0 600460 472 ?? Ss 1:08AM 0:00.01 /usr/local/sbin/dovecot _dovecot 30819 0.0 0.0 607304 1672 ?? S 1:08AM 0:00.01 dovecot/auth [0 wait, 0 passdb, 0 userdb] _dovenul 30818 0.0 0.0 603512 1724 ?? S 1:08AM 0:00.01 dovecot/imap-login [10.11.12.13] root 30805 0.0 0.1 601776 3640 ?? S 1:08AM 0:00.02 dovecot/config Behavior of 2.0.7: ------------------ _dovecot 35104 0.0 0.0 607308 1676 ?? S 1:11AM 0:00.01 dovecot/auth _dovenul 35103 0.0 0.0 603516 1736 ?? S 1:11AM 0:00.01 dovecot/imap-login root 35099 0.0 0.1 601780 3652 ?? S 1:11AM 0:00.02 dovecot/config root 35097 0.0 0.0 601544 716 ?? S 1:11AM 0:00.00 dovecot/log _dovecot 35096 0.0 0.0 601552 692 ?? S 1:11AM 0:00.00 dovecot/anvil [4 connections] root 35095 0.0 0.0 600464 460 ?? Ss 1:11AM 0:00.01 /usr/local/sbin/dovecot (of course the configuration remained 100% identical - I just compiled 2.0.7, again using the same ./configure parameters and did a "make install") It seems, that while anvil has gained some verbosity, auth and imap-login (and maybe pop-login) seem to have lost their "voice". Is there any intention behind this or did I ran into a "bug"? Greetings from Berlin - Clemens

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[Dovecot] v1.2.16 released
by Timo Sirainen 15 Nov '10

15 Nov '10

http://dovecot.org/releases/1.2/dovecot-1.2.16.tar.gz http://dovecot.org/releases/1.2/dovecot-1.2.16.tar.gz.sig Just some small fixes. - imap: Fixed SELECT QRESYNC not to crash on mailbox close if a lot of changes were being sent. - pop3: Fixed a potential hang - mbox: Creating new mailboxes should base permissions on mail root dir, not always use 0600. - auth: Disable auth caching entirely for master users.

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[Dovecot] Local node indexes in a cluster backend with GFS2
by Aliet Santiesteban Sifontes 15 Nov '10

15 Nov '10

Hi, all this days I'm testing a dovecot setup using lvs, director and a cluster email backend with two nodes using rhel5 and gfs2. In the two nodes of the email backend I configured mail location this way: mail_location = sdbox:/var/vmail/%d/%3n/%n/sdbox:INDEX=/var/indexes/%d/%3n/%n /var/vmail is shared clustered filesystem with GFS2 shared by node1 and node2 /var/indexes is a local filesystem at the node, so each node has his own /var/indexes stuff on ext3 and raid1 for improving performance, I mean each node a different /var/indexes of its own. Now, if the director was using node2 for the email for user1 and I removed node2 now all the connections for that user are redirected to node1, that node has its local /var/indexes, when this ocurr I can not see the emails that in fact are in the mailboxes, I guess should be indexes not current with the user mails. Is supposed indexes to be rebuilt automatically when the node switches?? Or I have to configure the indexes in the shared storage so the two node update the information concurrently? I will appreciate your help... best regards

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[Dovecot] Filter from Outlook fails after migration
by Antonio Perez-Aranda 15 Nov '10

15 Nov '10

We have some users which use Outlook 2003. After migration de Maildir from Courier to Dovecot, this user have some errors on their accounts because Outlook filters don't run. Some of this folders name contain chars like '-' but another folder with only letters fails too. Then ¿Does any people have similar errors with Outlook 2003? Dovecot version 1.2.15

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[Dovecot] Dovecot occasionally stops with Fatal: kevent(): Invalid argument
by Attila Nagy 14 Nov '10

14 Nov '10

Hi, FreeBSD/amd64 8-STABLE, Dovecot 2.0.6, stops in random times with: Nov 14 18:42:14 be dovecot: master: Fatal: kevent(): Invalid argument Any ideas? Thanks,

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[Dovecot] Backing up dovecot
by Spyros Tsiolis 14 Nov '10

14 Nov '10

Hello people, Well, what the subjects says :-) I have a dovecot/Horde installation and would like to know : a. How safe will I be backing up dovecot b. What folders/files to backup Let me see now; I am running dovecot v1.2.15 Here's a dump of "dovecot -n" : ---------------------------------------------------------------- [root@mailgate ~]# dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf # OS: Linux 2.6.18-194.17.1.el5PAE i686 CentOS release 5.5 (Final) ext3 base_dir: /var/run/dovecot/ log_path: /var/log/dovecot/dovecot.log info_log_path: /var/log/dovecot/dovecot-info.log ssl: required ssl_parameters_regenerate: 48 verbose_ssl: yes login_dir: /var/run/dovecot//login login_executable: /usr/local/dovecot/libexec/dovecot/imap-login login_greeting: * Dovecot ready * login_max_processes_count: 32 mail_location: maildir:/var/MailRoot/domains/%d/%n/Maildir mail_plugins: zlib auth default: verbose: yes debug: yes debug_passwords: yes passdb: driver: passwd-file args: /etc/dovecot/passwd passdb: driver: pam userdb: driver: static args: uid=vmail gid=vmail home=/home/vmail/%u userdb: driver: passwd ---------------------------------------------------------------- Thank you all, Best regards, spyros ---- "I merely function as a channel that filters music through the chaos of noise" - Vangelis

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