October 2010 - dovecot

[Dovecot] Dovecot's maildir format / is rm safe
by ian＠comtek.co.uk 26 Oct '10

26 Oct '10

Is it considered 'safe' to delete directly from a dovecot Maildir? I mean things of the form: rm Maildir/cur/1288062016.M581217P9422.alpha,S=1873,W=1900:2,S The wiki tells me 'If you wish to modify them in any way, create a new message instead and expunge the old one. ' but it doesn't mention deleted files. Specifically I'm wondering what happens with: dovecot.index dovecot.index.cache dovecot.index.log dovecot-uidlist Since (http://wiki.dovecot.org/IndexFiles) tells me these files index each message is there a chance of Dovecot breaking badly if it can't find them? Is it intelligent enough to automatically update the above files when it finds a missing message file? Would simply deleting the 4 files be appropriate? I have users with 4 gig mailboxes so I really wouldn't want to be deleting those files in a script every night if its a long winded process to regenerate them. Thanks in advance for any help, Ian

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[Dovecot] Solicitud de atributo mailPlugins en el ldap
by Antonio Perez-Aranda 26 Oct '10

26 Oct '10

Antes del piloto o durante el piloto deberíamos tener este atributo disponible en el ldap. El campo debe de ser único y admitir información en una línea. En un principio, para los usuarios con búsquedas tendría el contenido "fts fts_squat" Para la segunda fase será un requisito casi indispensable, puesto que por este campo configuraremos algunos parámetros específicos de Solr y que sean diferentes para algunos usuarios.

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[Dovecot] RHEL5/CentOS5 YUM repo, rpm, or spec file for 2.0?
by Roderick A. Anderson 26 Oct '10

26 Oct '10

I don't remember sing any mention come across the list reference the Subject line and nothing shows up within the first three pages of a Google search. Anyone know of a YUM repo. RPM or spec file for Dovecot 2.0 and friends? TIA, Rod --

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[Dovecot] post-login scripting using PHP
by Maciej Uhlig 26 Oct '10

26 Oct '10

I'd like to write post-login script using PHP. I noticed every shell post-login script ends with: exec "$@", which effectively executes dovecot's script-login. However, while I try to do the same (?) in PHP: $prog = $argv[1]; exec ("$prog"); it doesn't work. The client timeouts, dovecot (2.0.6) says "Disconnected for inactivity". May be I don't clearly see the way post-login scripting should work. Any hint to make it done? Regards, MU

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[Dovecot] Exchange-replacement with SOGo
by Timo Sirainen 26 Oct '10

26 Oct '10

I thought some people here would be interested: Recently SOGo added support for OpenChange, which means Outlook can natively access it via MAPI the same way as Exchange. Everything is open source, and the great thing about SOGo is that it uses existing IMAP server for mails rather than reimplementing yet another one itself. They seem to prefer Cyrus, but apparently Dovecot should work too. For non-mail (calendar, etc) it uses SQL, but I heard it's not too difficult to replace that either if someone would prefer some NoSQL database or something. http://www.sogo.nu/ http://www.openchange.org/

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[Dovecot] doveadm-expunge not expunging when ran from cron
by LEVAI Daniel 26 Oct '10

26 Oct '10

Hi! I noticed that this command ... : for USERNAME in ${USERS};do /usr/local/bin/doveadm -Dv expunge -u "${USERNAME}" mailbox sa.* SAVEDBEFORE 1d done ... does not expunge mails if ran from crontab. It shows in the Debug output what would have been done, but it doesn't really expunge those mails. This command runs daily, and every day the list of expunged mails (in the Debug output) just grows and grows, and the sa.* directories stay the same (except the new mails of course). However, if I run it from a terminal it really expunges the mails. Example output: doveadm(root): Debug: Loading modules from directory: /usr/local/lib/dovecot doveadm(root): Debug: Module loaded: /usr/local/lib/dovecot/lib10_quota_plugin.so doveadm(root): Debug: Loading modules from directory: /usr/local/lib/dovecot/doveadm doveadm(root): Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: Cannot load specified object (this is usually intentional, so just ignore this message) doveadm(root): Debug: Module loaded: /usr/local/lib/dovecot/doveadm/lib10_doveadm_quota_plugin.so doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6657 doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6658 doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6659 doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6660 doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6661 doveadm("${USERNAME}"): Debug: expunge: box=sa.spam uid=6662 [...] If ran from cron, then the same uids show up every day, and new ones gets added (as new mails gets copied into those directories). Is there something fishy going on in doveadm-expunge if it has no controlling terminal? Thanks, Daniel -- LÉVAI Dániel PGP key ID = 0x83B63A8F Key fingerprint = DBEC C66B A47A DFA2 792D 650C C69B BE4C 83B6 3A8F

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[Dovecot] Prevent dovecot.sieve.log logs
by Thiago Henrique 26 Oct '10

26 Oct '10

Hello, When an account overquota happens, a log is generated: /var/lib/imap/sieve/username/dovecot.sieve.log Is there a way to prevent this? My `dovecot -n` : ################################################################################ # 2.0.6 (a7d99b69523a): /etc/dovecot/dovecot.conf # OS: Linux 2.6.35-23-server x86_64 Ubuntu 10.04.1 LTS auth_master_user_separator = * auth_mechanisms = plain login auth_username_chars = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890.-_@= auth_worker_max_count = 10 disable_plaintext_auth = no listen = server.com login_greeting = K8 IMAP/POP3 server mail_gid = dovemail mail_plugins = " quota" mail_uid = dovemail managesieve_sieve_capability = fileinto reject envelope vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include imapflags notify mmap_disable = yes passdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } passdb { args = /etc/dovecot/dovecot-sql-master.conf.ext driver = sql master = yes pass = yes } plugin { autocreate = SPAM autosubscribe = SPAM quota = dict:User quota::file:/var/lib/imap/user/%2.256RHn/% n/dovecot-quota quota_rule = *:storage=1GB sieve = /var/lib/imap/sieve/%2.256RHn/%n/dovecot.sieve sieve_dir = /var/lib/imap/sieve/%2.256RHn/%n sieve_extensions = comparator-i;ascii-numeric copy envelope fileinto imapflags include notify regex reject relational subaddress vacation sieve_max_script_size = 512KB sieve_quota_max_scripts = 2 } protocols = imap pop3 lmtp sieve service auth-worker { user = $default_internal_user } service auth { process_limit = 1 process_min_avail = 1 } service imap-login { inet_listener imap { address = server.com port = 143 } } service imap { process_limit = 1024 process_min_avail = 10 } service lmtp { inet_listener { address = server.com port = 2003 } process_limit = 256 process_min_avail = 10 } service managesieve-login { inet_listener sieve { address = server.com port = 4190 } inet_listener sieve_deprecated { address = server.com port = 2000 } } service managesieve { process_limit = 20 process_min_avail = 10 } service pop3-login { inet_listener pop3 { address = server.com port = 110 } } service pop3 { process_limit = 256 process_min_avail = 10 } ssl = no userdb { driver = prefetch } userdb { args = /etc/dovecot/dovecot-sql.conf.ext driver = sql } verbose_proctitle = yes protocol imap { imap_idle_notify_interval = 2 mins imap_max_line_length = 64 k mail_max_userip_connections = 50 mail_plugins = " quota imap_quota autocreate" } protocol lmtp { mail_plugins = " sieve quota autocreate" } protocol sieve { mail_plugins = " sieve" managesieve_implementation_string = K8 ManageSieve managesieve_logout_format = bytes=%i/%o managesieve_max_line_length = 65536 managesieve_sieve_capability = comparator-i;ascii-numeric copy envelope fileinto imapflags include notify regex reject relational subaddress vacation } protocol pop3 { mail_plugins = " quota autocreate" } ################################################################################ Thanks, -- Thiago Henrique

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[Dovecot] 2.0.2 : crashes with LDA
by Jakob Curdes 26 Oct '10

26 Oct '10

Hello, I just migrated to 2.0.2 and see some <xx(a)localhost.redirectme.net> (expanded from<xx@localhost>): Command died with signal 6: "/usr/local/libexec/dovecot/dovecot-lda -c /etc/dovecot2.conf". Command output: doveconf: Panic: file settings-parser.c: line 1838 (settings_copy_deflist_unique): assertion failed: (dest_count == ccount) doveconf: Error: Raw backtrace: /usr/local/lib/dovecot/libdovecot.so.0 [0x9395c0] -> /usr/local/lib/dovecot/libdovecot.so.0(default_fatal_handler+0x45) [0x9396b5] -> /usr/local/lib/dovecot/libdovecot.so.0 [0x938c78] -> /usr/local/lib/dovecot/libdovecot.so.0 [0x9183c7] -> /usr/local/lib/dovecot/libdovecot.so.0 [0x9182de] -> /usr/local/lib/dovecot/libdovecot.so.0(settings_parser_apply_changes+0x6f) [0x91849f] -> /usr/local/bin/doveconf(config_filter_parsers_get+0x25f) [0x804e8af] -> /usr/local/bin/doveconf(config_parse_file+0x6a8) [0x80502f8] -> /usr/local/bin/doveconf(main+0x21f) [0x804c43f] -> /lib/i686/nosegneg/libc.so.6(__libc_start_main+0xdc) [0x5c8e9c] -> /usr/local/bin/doveconf [0x804b291] This does not happen always; most mails get delivered normally through the LDA. A command line call of doveconf yields no problems. Any hints? Best regards, Jakob Curdes

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[Dovecot] merge mdboxes
by Tobias Daucher 26 Oct '10

26 Oct '10

Hi there, after migration we have a very big problem... there are two mailboxes in /var/mail/username/mailboxes/ /var/mail/username/mailboxes/inbox /var/mail/username/mailboxes/inbox2 i DO have to merge these boxes, but i found no tools for this step. is there any way with doveadm oder dsync to move alle messages from mdbox inbox2 into mdbox inbox? i hope you all can tell me a way to do this - its a very very big problem at the moment. By the way - logging in via imap with thunderbird und move them on that way is not my favorite solution cause i have to do this for hundreds of users... i hope you can help me! thanks a lot! Tobias Daucher

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Re: [Dovecot] 2.0.3 Bug - hanging issue
by Alan Brown 26 Oct '10

26 Oct '10

> From: Timo Sirainen <tss(a)iki.fi> > Subject: Re: [Dovecot] 2.0.3 Bug - hanging issue > > On 25.10.2010, at 14.13, Alan Brown wrote: > >> > Oct 25 12:36:34 msslat dovecot: imap(keh2): Error: user keh2: Initialization failed: Namespace '#mbox/': mkdir(/stage/mail/imap1/keh2/mail) failed: Permission denied (euid=2291(keh2) egid=101(luci) missing +w perm: /stage/mail/imap1, euid is not dir owner) >> > >> > Because the parent directory was rwxr-xr-x root.root > Right.. > >> > The problem is that for some reason dovecot then wedged and a lot of other stuff piled up behind it, causing people to complain their mail wasn't coming through. Load average climbed to over 100. >> > >> > Creating the user directories freed things up... > So the problem is that if there's a misconfiguration, load goes up? I don't really know if there's much to do about this. I guess it could wait a second or so before disconnecting client to avoid it reconnecting back too fast.. > The client wasn't reconnecting as far as I can tell. It looked to me like the server process wedged after this error - we only got the error message logged once. The problem is that after it occurred no new clients could complete connections, but existing clients worked ok. Incoming connections were accepted, but then nothing would happen. As far as I can tell the parent would fork new child processes but they couldn't complete initialisation. Mail clients simply complained of a timeout during connection. This was affecting all users. With regard to error disconnections - yes a delay is a good idea.

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