August 2012 - dovecot

[Dovecot] Recipe for "admin-less restore"
by Ralf Hildebrandt 27 Aug '12

27 Aug '12

Is there a way for setting up dovecot in such a way that a user can "jump back in time" to an old mailbox "state" in order to retrieve his accidentially deleted mail? -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt(a)charite.de | http://www.charite.de

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[Dovecot] How to configure dovecot for specific mailboxes only?
by Alex 27 Aug '12

27 Aug '12

Hi, is it possible to configure dovecot so that it only serves mailboxes of specified users? All other users should be completely ignored so that no indexing of messages or other resource consuming actions take place. Thanks in advance, Alex

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[Dovecot] dovecot stats error
by Robert Schetterer 25 Aug '12

25 Aug '12

Hi Timo, any idea whats this related too ? dovecot: stats: Error: Mail server input error: UPDATE-SESSION: stats shrank: mrbytes 21703727 < 25193928 -- Best Regards MfG Robert Schetterer

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[Dovecot] UIDPLUS for Maildir?
by Martin Rabl 25 Aug '12

25 Aug '12

Hi, I found the following comment in the documentation (http://wiki.dovecot.org/FeatUIDPLUS) last edited on 2009-03-15 > Dovecot already supported UIDPLUS at one point for mbox, but implementing it > for Maildir has to be done differently (UIDs are allocated later with Maildir). > So currently the UIDPLUS code is removed until it can be made to > work with Maildir. My question: does this extension now run with maildir? Thank you, Martin

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[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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[Dovecot] Problem use localized prefix in namespace
by (Dovecot) Sergey Sidlyarenko 25 Aug '12

25 Aug '12

dovecot --version 2.1.7 uname -a Linux ns 3.2.0-2-amd64 #1 SMP Mon Jun 11 17:24:18 UTC 2012 x86_64 GNU/Linux Debian sid Problem with localized prefix in namespace. Create namespace namespace { hidden = no ignore_on_failure = no inbox = no list = yes location = maildir:/var/mail/%d%n/test1:LAYOUT=fs:DIRNAME=maildirfolder:UTF-8 mailbox next { auto = subscribe special_use = } prefix = Тест1/ separator = / subscriptions = yes type = private } namespace { hidden = no ignore_on_failure = no inbox = no list = yes location = maildir:/var/mail/%d%n/test2:LAYOUT=fs:DIRNAME=maildirfolder:UTF-8 mailbox next { auto = subscribe special_use = } prefix = &BCIENQRBBEI-2/ separator = / subscriptions = yes type = private } result A0002 NAMESPACE * NAMESPACE (("" "/")("links/" "/")({10} Тест1/ "/")("&BCIENQRBBEI-2/" "/")) NIL NIL A0002 OK Namespace completed. A0003 LIST "" "*" ... cut * LIST (\Noselect \HasChildren) "/" "&BCIENQRBBEI-1" * LIST (\HasNoChildren) "/" "&BCIENQRBBEI-1/next" * LIST (\Noselect \HasChildren) "/" "&-BCIENQRBBEI-2" * LIST (\HasNoChildren) "/" "&-BCIENQRBBEI-2/next" * LIST (\HasNoChildren) "/" "&BCIENQRBBEI-1/next" * LIST (\HasNoChildren) "/" "&-BCIENQRBBEI-2/next" A0002 OK List completed. A0003 LSUB "" "*" ... cut * LSUB () "/" "&-BCIENQRBBEI-2/next" * LSUB () "/" "&BCIENQRBBEI-1/next" * LSUB () "/" "&BCIENQRBBEI-1/next" * LSUB () "/" "&-BCIENQRBBEI-2/next" A0003 OK Lsub completed. A0004 SELECT "&BCIENQRBBEI-1/next" * FLAGS (\Answered \Flagged \Deleted \Seen \Draft) * OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted. * 0 EXISTS * 0 RECENT * OK [UIDVALIDITY 1344240572] UIDs valid * OK [UIDNEXT 1] Predicted next UID * OK [NOMODSEQ] No permanent modsequences A0004 OK [READ-WRITE] Select completed. A0005 SELECT "&BCIENQRBBEI-2/next" Connection closed by foreign host. in error log 2012-08-17 22:19:17 imap(admin(a)lefoyer.ru): Panic: file mail-storage.c: line 791 (mailbox_check_mismatching_separators): assertion failed: (strncmp(vname, ns->prefix, ns->prefix_len-1) == 0) 2012-08-17 22:19:17 imap(admin(a)lefoyer.ru): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x4413a) [0x7f8d6bcc613a] -> /usr/lib/dovecot/libdovecot.so.0(+0x4417e) [0x7f8d6bcc617e] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f8d6bc9d82a] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x7e506) [0x7f8d6bf8e506] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_open+0x18) [0x7f8d6bf8e538] -> dovecot/imap(cmd_select_full+0x13e) [0x40ddbe] -> dovecot/imap(command_exec+0x3c) [0x4118dc] -> dovecot/imap() [0x4109ae] -> dovecot/imap() [0x410a5a] -> dovecot/imap(client_handle_input+0x11d) [0x410cad] -> dovecot/imap(client_input+0x62) [0x411552] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x36) [0x7f8d6bcd2ff6] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0xa7) [0x7f8d6bcd3ca7] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x28) [0x7f8d6bcd2a08] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f8d6bcbf483] -> dovecot/imap(main+0x285) [0x409265] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f8d6b919ead] -> dovecot/imap() [0x4093d5] 2012-08-17 22:19:17 imap(admin(a)lefoyer.ru): Fatal: master: service(imap): child 20040 killed with signal 6 (core dumps disabled) -- Best regards, Sidlyarenko Sergey Aleksandrovish +7(495)509-42-07 tresh_dovecot(a)lefoyer.ru mailto:tresh_dovecot@lefoyer.ru

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[Dovecot] Shared mdboxes
by Wagner Michel Martins de Azevedo 24 Aug '12

24 Aug '12

Hi Timo, I'm trying to share two folders. The first one it's public and the other is per user based, using acl's to control access etc . Dovecot create the folders, but when I'll subscribe using ThunderBird client both of them seens like watermarked and has a "mailboxes" folder inside. I can set up the acl's rules using Thunderbird. Log files like mail.log don't show nothing in special and mail.err has nothing. Here is the config. # 2.1.8 (b4cd382b6606): /etc/dovecot/dovecot.conf# OS: Linux 2.6.32-5-amd64 x86_64 Debian 6.0.5 /etc/dovecot/conf.d/10.mail.conf namespace { type = public separator = . prefix = public. location = mdbox:/var/mail_shares/public:INDEX=/var/mail_shares/public subscriptions = no}namespace { type = shared separator = . prefix = %h/shared location = mdbox:%h/shared:INDEX=%h/shared subscriptions = no list = children} Thanks, Wagner Azevedo

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[Dovecot] enabling per user quota plugin and problems with pop3
by Angel L. Mateo 24 Aug '12

24 Aug '12

Hello, I am configuring quota plugin per user, not for the whole system. As documentation says (http://wiki2.dovecot.org/Quota) I have to add "quota" to the global mail_plugins and "imap_quota" to mail_plugins for protocol imap, but I don't know how to configure this in a userdb. I'm using a passwd-file in the way: <user>:{plain}password:<uid>:<gid>::<home>::userdb_mail_plugins=quota,imap_quota but this activate both plugins in the global mail_plugins option. The problem with this is that if the user tries to connect via pop3 instead of imap (a thing that I permit, although the user shouldn't do it) I have the error: Aug 20 10:04:18 myotis30 dovecot: pop3: Error: dlopen(/usr/lib/dovecot/modules/lib11_imap_quota_plugin.so) failed: /usr/lib/dovecot/modules/lib11_imap_quota_plugin.so: undefined symbol: client_send_tagline is there any way to solve this problem? -- 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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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] Error: Couldn't open INBOX: Timeout while waiting for lock
by Kavish Karkera 23 Aug '12

23 Aug '12

Hi , My users are frequetly getting the below error, Aug 21 00:04:18 blade6 dovecot: pop3-login: proxy(hgl_dipak): Login failed to 192.168.1.43:110: [IN-USE] Couldn't open INBOX: Timeout while waiting for lock. We are proxing pop connections from one pop server (dovecot version 1.1.20) i.e 192.168.1.39 to the other pop Server (Dovecot version 2.0.16 ) i.e 192.168.1.4. We have set pop3_lock_session = yes and dont want to disable it. Please Help !! :) K.K

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