- dovecot - dovecot.org

[Dovecot] Disabling auth caching just from one passdb
by Angel L. Mateo 11 Feb '13

11 Feb '13

Hello, I'm using various password databases (one of them is a ldap database, which is the used for users connecting with email clients, and the other with pam, using a pam module integrated with our SSO that is used from our webmail). I would like to disable password caching in my pam database (because 'passwords' provided by our SSO are single use tokens, so caching them has no benefit), but not in the ldap. As far as I know, auth_cache_size is the option to enable caching in all databases. But, is there any option I could use to disable it in a specific password database? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868889150 Fax: 868888337

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Re: [Dovecot] Imap process crash: assertion failed: (full_fs_access)
by Joseph Tam 11 Feb '13

11 Feb '13

Any guess at what would cause this? Feb 7 21:20:53 server dovecot: imap(user): Panic: file mailbox-list-fs-iter.c: line 447 (fs_list_get_roots): assertion failed: (full_fs_access) (Sorry, no core dump) According to my logs, this user couldn't start an IMAP session for a 2 hour stretch for hundreds of connections. Then the problem seemed to have went away. I logged back as that user using a master password, but couldn't recreate this problem. The backtrace is just hex numbers (stripped executables) and I didn't drop privileges, so it refused to drop core, so that's no help. Joseph Tam <jtam.home(a)gmail.com>

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[Dovecot] Moving index files on another disk: no troubles but need more assurances
by Paolo Miotto 11 Feb '13

11 Feb '13

Hi, I'm using dovecot 1.2.15 on debian squeeze with maildir, and I want to move index files out of the mailboxes disk to reduce disk I/O. I need to get the assurance that the switch is completely transparent to my clients (IMAP and POP). I read the wiki documentation and have found this thread (http://dovecot.org/pipermail/dovecot/2009-September/042665.html) which makes me confident, even if it speaks of a older version and only pop3. So I set up a test server, copied a true mailbox and changed mail location from: mail_location = maildir:~/Maildir to mail_location = maildir:~/Maildir:INDEX=/srv/indexes/%1n/%n (all users under the same domain, no need to use %d). On the IMAP side all seems to work fine, new indexes are created in the new location (dovecot.index.log on 1st access, dovecot.index.cache on message manipolation). A test client (evolution) doesn't notice at all, and I have verified via a telnet imap session that UIDs don't change. But I see that when I move the indexes the IMAP HIGHESTMODSEQ response changes and is reset to 1. Can this baffle the clients? On the rfc I don't found reference to this status walking backwards. Need I to verify that all messages have the virtual size (W=nnnn) in the file name (the mailboxes are from a previous cyrus installation, then we switch to dovecot 1.2)? What other test you suggest that checking UIDL on the pop3 side? What happens if the indexes disk disappears (broken or removed from bay or all paths down for FC/iscsi)? Can dovecot 1.2 continue with INDEX=MEMORY as for a disk full? Sorry for the many questions.... Paolo ---------------------------------------------------------------------- SEMEL (SErvizio di Messaging ELettronico) - AINF, Universita' di Udine

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[Dovecot] dovecot, postfix and sieve - broken by Ubuntu upgrade 10.10 -> 12.04
by Johan Helsingius 10 Feb '13

10 Feb '13

Hi! In upgrading from Ubuntu 10.10 to 12.04, my mail setup (dovecot using sieve and postfix) broke pretty badly. Have gotten teh imap server working, but local delivery doesn't work. - sieve gets called, but all "fileto" actions result in "failed to store into mailbox 'zzz': Mailbox doesn't exist: zzz Dovecot version is 2.0.19, configuration is: # 2.0.19: /etc/dovecot/dovecot.conf # OS: Linux 3.2.0-37-generic i686 Ubuntu 12.04.2 LTS ext4 auth_mechanisms = plain login base_dir = /var/run/dovecot/ disable_plaintext_auth = no info_log_path = /var/log/dovecot.info listen = * log_path = /var/log/dovecot.log log_timestamp = "%Y-%m-%d %H:%M:%S " login_greeting = Mail server ready. mail_location = maildir:/srv/mail/%u mail_max_userip_connections = 256 mail_privileged_group = mail managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave mbox_dotlock_change_timeout = 10 mins mbox_lock_timeout = 20 mins mbox_very_dirty_syncs = yes passdb { driver = pam } plugin { sieve = /home/julf/sieve } protocols = imap service auth { unix_listener /var/spool/postfix/private/dovecot-auth { group = postfix mode = 0660 user = postfix } unix_listener auth-master { mode = 0600 } user = root } service imap-login { chroot = login user = dovecot } service managesieve-login { chroot = login user = dovecot } service pop3-login { chroot = login user = dovecot } ssl = no userdb { driver = passwd }

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[Dovecot] cPanel && Dovecot 2.x
by Marc Jauvin 10 Feb '13

10 Feb '13

I would like to know if dovecot 2.0.9+ can work with cPanel. I know there is a template for it in cPanel 11.34.1, but when I tried to switch to 2.0.9 (from 1.2.17), it didn't work. I didn't put too much time to test it since I only have one live system to test it with, and I have many customers hosted on this server and I cannot disrupt the service. Has anyone been able to make this work, and if so, is there anything special to do other than rebuilding the config with "/scripts/builddovecotconf" ? Thanks.

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[Dovecot] GSS-SPNEGO with dovecot and Outlook without Samba
by Julian David Rath 10 Feb '13

10 Feb '13

I am trying to configure a dovecot2 IMAP server to inter-operate with a active directory to authenticate users. The users should be able to login without a password on a domain-joined client(Outlook). Is it possible to do this only with kerberos? I don't want to put a crappy winbind on my mailserver... I already configured my server to authenticate via kerberos(GSSAPI), but Outlook does not even try to authenticate using GSSAPI, it rather uses PLAIN. I would appreciate any help, many thanks in advance.

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[Dovecot] Dovecot 2.2.beta1
by Mark Sapiro 10 Feb '13

10 Feb '13

Just an FYI, I have been running 2.2.beta1 for a few days now with no problems, but I'm not using any of the new features ;) -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

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[Dovecot] GSS-SPNEGO with dovecot and Outlook without Samba
by Julian David Rath 09 Feb '13

09 Feb '13

I am trying to configure a dovecot2 IMAP server to inter-operate with a active directory to authenticate users. The users should be able to login without a password on a domain-joined client(Outlook). Is it possible to do this only with kerberos? I don't want to put a crappy winbind on my mailserver... I already configured my server to authenticate via kerberos(GSSAPI), but Outlook does not even try to authenticate using GSSAPI, it rather uses PLAIN. I would appreciate any help, many thanks in advance.

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[Dovecot] dsync timeout?
by Micah Anderson 08 Feb '13

08 Feb '13

I'm using dsync for a regular backup. The backup system flocks so that two cannot run at the same time, which is generally a good thing. The problem is that it seems like dsync sometimes goes off into the weeds and never comes back, leaving a process running and doing nothing forever, hogging the lock and causing my backups never to run again. I just finally figured out that was what was causing the backups not to run on this system was this process: root 17836 0.0 0.0 40888 1600 ? S 2012 0:00 ssh -i /root/.ssh/backmaildir_id_rsa backmaildir@arg /usr/bin/dsync -u foobar server yeah, that has been running since 2012 :( root:/tmp# strace -p 17836 Process 17836 attached - interrupt to quit select(8, [4], [], NULL, NULL very exciting... There doesn't seem to be a timeout in dsync, but perhaps there should be? At this point my only option is to write a cronjob that will look for dsync processes that are over a certain amount of time old and then kill them, after I do that I will need to take a shower because that is a very dirty solution :P thanks for any ideas, or help! micah --

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[Dovecot] Dovecot-2.1.14 - pop3 processes always hangs forever - a follow-up
by Axel Luttgens 08 Feb '13

08 Feb '13

Suspecting a problem with the "virtual" uids/gids, I've tried with a real user for the mail user: # 2.1.14: /_ETC/dovecot/dovecot.conf # OS: Darwin 12.2.1 x86_64 auth_verbose = yes disable_plaintext_auth = no mail_debug = yes mail_gid = dovemailer mail_location = mbox:~/mboxes:INBOX=~/mboxes/inbox mail_uid = dovemailer passdb { args = /_ETC/dovecot/db.conf driver = sql } ssl = no userdb { driver = prefetch } Of course, the db queries do not return uid/gid pairs anymore. And the pop3 processes now seem to work as expected; connecting for the first time as user1: $ telnet 127.0.0.1 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK Dovecot ready. user user1 +OK pass pass1 +OK Logged in. list +OK 0 messages: . quit +OK Logging out. Connection closed by foreign host. Hmmm... Axel

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