July 2012 - dovecot - dovecot.org

[Dovecot] dsync replication available for testing
by Timo Sirainen 25 Aug '12

25 Aug '12

In dovecot-2.1 hg you can now test dsync-based replication. Everything isn't finished yet, but it appears to work and I've enabled it for my @dovecot.fi mails. Some issues: - public namespace isn't replicated at all - shared namespace is replicated, but not private mail flags - I've only tested SSH replication setup now, not director replication setup (and director setup is still missing many things) - SSH replication setup uses aggregator process, which isn't really necessary and can probably be avoided in future Below is a configuration for virtual user setup. System user configuration works pretty much the same, except doveadm/ssh is run as root. Try first that dsync works successfully with ssh in host1: doveadm sync -u user@domain remote:vmail@host2.example.com and also in host2: doveadm sync -u user@domain remote:vmail@host1.example.com ------ mail_plugins = $mail_plugins notify replication service aggregator { # give enough permissions for mail processes fifo_listener replication-notify-fifo { user = vmail mode = 0600 } unix_listener replication-notify { user = vmail mode = 0600 } } service replicator { # start replication at startup process_min_avail = 1 } plugin { # host1 replicates to host2 mail_replica = remote:vmail@host2.example.com # host2 replicates to host1 #mail_replica = remote:vmail@host1.example.com } #dsync_remote_cmd = ssh -l%{login} %{host} doveadm dsync-server -u%u -l%{lock_timeout} -n%{namespace} service doveadm { # if you're using a single virtual user, set this to # start ssh as vmail (not root) user = vmail }

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Re: [Dovecot] problem with virtual plugin/index files?
by Lutz Preßler 24 Aug '12

24 Aug '12

Hello, Timo: on Oct 29th I wrote ---- with latest 2.0.6 (601065674f74), the following virtual mailbox is not behaving correctly. I'm quite sure that the problem has not existed in some earlier 2.0.x (maybe only INBOX as mailbox then though): ~user/Maildir/virtual/.week/dovecot-virtual contains INBOX INBOX.* -INBOX.Trash inthread refs younger 604800 This works as expected for the first time. But later on, also older messages/ threads are included until I delete the virtual/.week/dovecot.index*. ---- Just want to state that this problem still persists with latest version. Any idea? Thanks and greetings, Lutz -- Lutz Preßler <Lutz.Pressler(a)SerNet.DE> http://www.SerNet.DE/ SerNet Service Network GmbH, Bahnhofsallee 1b, D-37081 Göttingen Tel.: +49-551-370000-2, FAX: +49-551-370000-9 AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen

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[Dovecot] Panic: file mail-storage.c: line 791 (mailbox_check_mismatching_separators)
by Claus Rosenberger 23 Aug '12

23 Aug '12

Hi, with fetching the folder structure with the webclient Tine i can see following error messages inside of the logfiles: Panic: file mail-storage.c: line 791 (mailbox_check_mismatching_separators): assertion failed: (strncmp(vname, ns->prefix, ns->prefix_len-1) == 0) Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x448fa) [0x7f70036db8fa] -> /usr/lib/dovecot/libdovecot.so.0(+0x44946) [0x7f70036db946] -> /usr/lib/dovecot/libdovecot.so.0(+0x1b8ca) [0x7f70036b28ca] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open_stream+0) [0x7f70039a1550] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open+0xf) [0x7f70039a156f] -> dovecot/imap(cmd_select_full+0x14a) [0x40db1a] -> dovecot/imap(command_exec+0x3d) [0x41160d] -> dovecot/imap() [0x41058e] -> dovecot/imap() [0x41066d] -> dovecot/imap(client_handle_input+0x135) [0x410895] -> dovecot/imap(client_input+0x5f) [0x4111bf] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f70036e7ea6] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9f) [0x7f70036e8f2f] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x28) [0x7f70036e7e48] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f70036d4103] -> dovecot/imap(main+0x2a5) [0x419695] -> /lib/libc.so.6(__libc_start_main+0xfd) [0x7f7003353c8d] -> dovecot/imap() [0x408f49] Fatal: master: service(imap): child 21152 killed with signal 6 (core dumps disabled) ------------ dovecot -n ------------ # 2.1.7: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.5 ext4 first_valid_gid = 104 first_valid_uid = 107 last_valid_gid = 104 last_valid_uid = 107 login_trusted_networks = 10.20.11.4 mail_gid = 104 mail_location = maildir:/var/spool/dovecot/%Ld/%Ln/Maildir mail_plugins = quota acl mail_privileged_group = mail mail_uid = 107 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 namespace { hidden = no list = children location = maildir:/var/spool/dovecot/%%d/%%n/Maildir:INDEX=/var/spool/dovecot/%d/%n/Maildir/shared/%%n prefix = shared/%%n/ separator = / type = shared } namespace inbox { inbox = yes location = prefix = INBOX/ separator = / type = private } namespace virtual { alias_for = INBOX/ hidden = yes list = no location = prefix = separator = / type = private } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { acl = vfile acl_shared_dict = file:/var/spool/dovecot/%d/shared-mailboxes quota = maildir:User quota quota_rule = *:storage=1GB sieve = /var/spool/dovecot/%Ld/%Ln/.dovecot.sieve sieve_dir = /var/spool/dovecot/%Ld/%Ln/sieve } postmaster_address = postmaster(a)rocnet.de protocols = " imap sieve pop3 sieve" service auth { unix_listener auth-userdb { group = dovecot mode = 0660 user = vmail } } service imap-login { inet_listener imap { port = 0 } inet_listener imaps { port = 993 ssl = yes } } service imap { process_limit = 1024 } service pop3-login { inet_listener pop3 { port = 0 } inet_listener pop3s { port = 995 ssl = yes } } service pop3 { process_limit = 1024 } ssl_cert = </etc/ssl/certs/pop3d.pem ssl_key = </etc/ssl/private/pop3d.pem userdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } protocol lda { mail_plugins = quota acl sieve } protocol imap { mail_plugins = quota acl imap_quota imap_acl } I checked if there are special characters in the folder structure but there are only standard ones. ---- Claus

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[Dovecot] doveadm director move behaviour
by Angel L. Mateo 23 Aug '12

23 Aug '12

Hi, I have a director farm running in front of dovecot pop/imap servers. For a reason, one of my backend servers have been down, so poolmon disables it in director servers and users corresponding to it has been sent to other servers. Until this, no problem. Now my failed backend server is up again, and I want to redirect all of its users to it, without waiting for it director sessions to end. So I have used doveadm director move <user> <backend ip> to move them to its "hashed" server. Although a doveadm director status <user> now shows me that this user is directed to the new server, doveadm who in the temporal server shows me that the user is actually connected to it, although messages are delivered to it through is correct server. So I have had to manually kick that users in the temporal servers. Is this the expected behaviour of the move command for director? Is there any way to also force the kick of the imap/pop user's connection in the temporal server? -- Angel L. Mateo Martínez Sección de Telemática Área de Tecnologías de la Información y las Comunicaciones Aplicadas (ATICA) http://www.um.es/atica Tfo: 868887590 Fax: 868888337

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[Dovecot] namespace from snapshots
by Karl Oulmi 21 Aug '12

21 Aug '12

hi all, I'm trying to give access to snapshots taken from by dell iscsi MD3200i to my maildirs users. snapshot are mounted in read only mode from my FreeBSD box. In my /usr/local/etc/dovecot/conf.d/10-mail.conf, I have : namespace inbox { inbox = yes } namespace da1 { prefix = INBOX.backup.da1. hidden = no list = yes inbox = no location = maildir:/da1/%u/Maildir type = private } I have two problems : - In my log, dovecot complain about the fact that my snapshot filsystem is read only Error: open(/da1/test2(a)toto.com/Maildir/.Trash/dovecot-uidlist) failed: Read-only file system The second problem is that through my thunderbird I can't see the Inbox saved in the snapshot (whereas I see Sent and Trash folders) If anyone could help me, It would be nice. Regard, Karl.

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[Dovecot] Statistics scripts
by Timo Sirainen 08 Aug '12

08 Aug '12

I wrote two scripts, which you can use with the stats plugin enabled to get a better "doveadm stats top" than it currently is: http://dovecot.org/tools/stats-top.pl http://dovecot.org/tools/stats.pl

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[Dovecot] sieve vacation messages trouble
by asier.cidon＠externo.uam.es 07 Aug '12

07 Aug '12

FROM:mailman-bounces@dovecot.org DATE:27. heinäkuuta 2012 16.58.35 UTC+3.00 TO:dovecot-owner@dovecot.org SUBJECT:CONTENT FILTERED MESSAGE NOTIFICATION The attached message matched the dovecot mailing list's content filtering rules and was prevented from being forwarded on to the list membership. You are receiving the only remaining copy of the discarded message. FROM:Asier Cidon Periañez <asier.cidon(a)externo.uam.es> DATE:27. heinäkuuta 2012 16.01.59 UTC+3.00 TO:dovecot@dovecot.org SUBJECT:RE: [DOVECOT] SIEVE VACATION MESSAGES TROUBLE Hi, I have a problem when I define a Filter SIEVE vacation with Horde, Qmail and Dovecot. When I sent the message vacation for domains external, the log of postfix show <"<>"@mymachine>. I am writing you because I saw the post http://www.dovecot.org/list/dovecot/2009-June/040811.html Can you explain me whqt is the solution? Many Thanks.

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[Dovecot] getting rid of old spam from +spam Maildir ?
by Voytek Eymont 06 Aug '12

06 Aug '12

I'm trying to setup per user '+spam' delivery from amavis tags, so that each user gets any mails tagged as spam to 'spam' Maildir via +spam Dovecot lmtp delivery. after say 7 days I want to delete all spams older than 7 days, if I simply delete mail files from the file system, is that a 'bad thing' ? what is a proper way to do that, and scripts ? for removing/archiving old uncollected emails in main INBOX I use archivemail from sf, but, don't think I can do subfoldrs with archivemail any pointers (and scripts) welcomed, thanks -- Voytek

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[Dovecot] authenticate plain and utf-8 with special chars
by Matthias Lay 04 Aug '12

04 Aug '12

Hi, I experienced some problems with authenticate. seems like the mail clients like thunderbird send their base64 string in ISO- encoding, which doesnt work on my dovecot setup if there are some Umlauts I am not able to login as "ömer" for example If I authenticate from telnet with an base64 encoded utf-8 string like 'echo -en "\0ömer\0Start12" |base64' everything works fine -dovecot 2.1.7 -userdb is an openldap which queries an windows AD so results are in utf8, I think. any clues at which point to fix this are welcome ;)

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[Dovecot] zlib plugin maildir broken ?/ Cached message size smaller than expected
by Robert Schetterer 03 Aug '12

03 Aug '12

Hi Timo, by having errors like Cached message size smaller than expected and Maildir filename has wrong S value and Corrupted index cache file in dove 2.1.8 i can reproduce the problem with tb 14 with 2 nat machines connected to the same server the problem relates with create new folder then copy some uncompressed and compressed mail to it, the i.e open it by other client sometime this happens at once , sometime after a few copy actions however thunderbird ,then errors above apear, sometimes no mail is shown, sometimes only uncompressed or only compressed so funktion read both formats gets lost somehow any idea, you need a better debug ? -- Best Regards MfG Robert Schetterer

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