August 2008 - dovecot

[Dovecot] [PATCH, RFC] add APOP authentication mechanism
by Andrey Panin 14 Aug '17

14 Aug '17

Hello all, this patch add APOP authentication mechanism to dovecot 1.0-test23. Please take a look. Best regards. -- Andrey Panin | Linux and UNIX system administrator pazke(a)donpac.ru | PGP key: wwwkeys.pgp.net

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[Dovecot] Spliting Folders for Efficiency
by Daniel Watts 28 Jun '09

28 Jun '09

Dear Timo, Would there be any sense in giving Dovecot the option to split folders into multiple subfolders when they reached a specified size (probably message count) limit? Dovecot would monitor folders and when they reached, say, 10,000 messages, silently split the folder on the filesystem to ensure that access remains fast. I know that Dovecot scales very well but this would give practically unlimited storage capability and also keep things fast. You could even have it so that the latest 100 messages are kept in their own folder for fast access. .Folder.new .Folder.cur .Folder.tmp could become: .Folder__1.new .Folder__1.cur .Folder__1.tmp and .Folder__2.new .Folder__2.cur .Folder__2.tmp with Dovecot merging them before display as just "Folder" within the mail client. This could be further extended so that Dovecot could be configured to store 'old' message folders in a separate location. We could then have slower+cheaper+larger storage mounted so that 'old mail' does not take up the expensive local SCSI disks on the machine. Mail from 2 years ago is much less likely to be accessed than mail from the last week. This would provide very neat behind-the-scenes archiving functionality. Looking forward to hearing your thoughts. Best, Daniel -- Squirrelmail Stable 1.4.8 (and developing on 1.5.2) PHP 5.x Hardened with Eaccelerator Apache 2.x Mysql 5.0.x Imapproxy over Dovecot 1.0.rc27 with Maildir all running on Gentoo Linux for ~5,000 users.

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[Dovecot] compressed mbox patch
by Axel Thimm 16 Jun '09

16 Jun '09

Some ages ago there existed a compressed mbox patch, but now all I can find are posting about it. Does such a beast exist and would it remotely apply to today's dovecot? If not, is there any hope that something like that emerges? Thanks! -- Axel.Thimm at ATrpms.net

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[Dovecot] Authentication cache, failure to login after changed password
by Tom Sommer 16 Jun '09

16 Jun '09

Hi, I have an issue with the authentication cache. When a user changes his password, the cache doesn't seem to get flushed. Meaning the user is unable to log in to his IMAP account after changing his password. Flow: - Log into IMAP account using pass1 - Approved - Stored in auth cache - Change password to pass2 in MySQL - Log into IMAP account using pass2 - Access is denied - Restart dovecot - Log into IMAP account using pass2 - Approved I'd really like to continue to use the auth cache, is there any solution to the above? perhaps a way to debug the cache and auth process? I wasn't able to activate auth_debug without restarting Dovecot and solving the problem. Using version 1.1.1, MySQL userdb, with "nopassword=Y". Maybe it's due to nopassword? Thanks -- Tom

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[Dovecot] Feature Missing OUTBOX Folder
by Frank Doege 01 Jun '09

01 Jun '09

Hi Dovecot People, i have switched my system from courier-imap to dovecot and iam quite happy with it, the performance is well and i had nearly no problems. One little feature iam missing is in Courier i had a folder called "Outbox" there i could paste mails which i want to sent out. In some networks its not always available to sent mails via port 21, i know i could just set up my email server to another port but it was a nice feature. Is this a big afford or is it just alittle hack ? could it done via a little plugin ? Thanks Timo & all others for the great work ! Frank

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[Dovecot] store sieve scripts with maildir
by Samuel HAMEAU 17 Nov '08

17 Nov '08

Hi, I am using dovecot 1.0.10 and pysieved, in a master/slave cluster with ldap (auth_bind=yes). For conceptuals reasons, i would like to keep on the same partition the mailstore + sieve scripts. I have try to set "sieve" and "home" variables under the "plugin" section with an absolute path, and i have tried to override home variable in user_attrs (dovecot-ldap.conf) as well with an absolute path, but in vain. Is there a solution ? sam

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[Dovecot] imap processes eating IO
by Ryan Rawdon 02 Nov '08

02 Nov '08

[Ignore the previous e-mail, I somehow sent it when I was trying to paste from clipboard] I recently migrated my dovecot/postfix setup to a new machine. After doing so, I have encountered a problem where imap processes get stuck in a loop eating loads of IO on the machine. Looking at the trace (snippet below), it looks like they are sitting and reading the inbox and other folders of certain users repeatedly. This seems to be triggered by the delivery of a new e-mail to the user's mailbox while they have an IMAP client connected, though I cannot say for sure. This had never happened before on the old machine. I'm certain more information would be useful, please let me know what I can provide to help! Trace of process 22342 - imap lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203440140.P6242Q0M41485.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=3079, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203446630.P7458Q0M562949.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=27769, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203454830.P9042Q0M402016.scarecrow:2,RSe", {st_mode=S_IFREG|0600, st_size=730534, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203460967.P10096Q0M631472.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=2690, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203463833.P10601Q0M946162.scarecrow:2,Sbc", {st_mode=S_IFREG|0600, st_size=2319, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203468449.P11425Q0M422185.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2650, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203469387.P11575Q0M276926.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1317, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203472851.P12516Q0M604824.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2491, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203474105.P12705Q0M450957.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=1489, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203474330.P12758Q0M302789.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=1483, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203474352.P12765Q0M853382.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=1520, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203475497.P12947Q0M759098.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=1554, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203476420.P13131Q0M140164.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1011, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203477055.P13350Q0M324248.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=1511, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203485834.P14664Q0M678604.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=2153, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203555290.P27989Q0M937789.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=2017, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203566780.P29789Q0M486178.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1570, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1216416810.P17960Q0M786183.tinman:2,S", {st_mode=S_IFREG|0600, st_size=1447, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203567387.P29984Q0M463701.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1560, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203568156.P30125Q0M174453.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1570, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203568755.P30222Q0M271021.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1555, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203578404.P31535Q0M370292.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1125, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203581122.P31861Q0M954508.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2108, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203596470.P3307Q0M326986.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=2738, ...}) = 0 getdents64(12, /* 64 entries */, 4096) = 4096 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203615744.P6582Q0M282341.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2027, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203619209.P7288Q0M583007.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=8739, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203629165.P9049Q0M921642.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=3049, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203638438.P10774Q0M313047.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=8889, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203639137.P10877Q0M554068.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=9549, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203679395.P16427Q0M89616.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1364, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203689732.P20116Q0M93680.scarecrow:2,Sbc", {st_mode=S_IFREG|0600, st_size=2440, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203690022.P20155Q0M909689.scarecrow:2,Sbc", {st_mode=S_IFREG|0600, st_size=2303, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203693712.P20948Q0M30023.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=3991, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203693933.P20990Q0M934746.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2371, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203695416.P21386Q0M135204.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=6992, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203698879.P21995Q0M135839.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1691, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203700228.P22234Q0M28365.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1013, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203703239.P23143Q0M571200.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2122, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203704119.P23375Q0M653158.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2256, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203713490.P25274Q0M840767.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=19577, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203736413.P29935Q0M732560.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=3143, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203802545.P10420Q0M281614.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2620, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203803404.P10616Q0M912757.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=2622, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203804020.P10721Q0M538580.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=3003, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203805331.P10980Q0M701431.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=2361, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203809386.P25318Q0M128371.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=4004, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203809725.P27021Q0M447783.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=3679, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203813058.P6051Q0M690481.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=816, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203874686.P31025Q0M52827.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=2933, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203892798.P6675Q0M22252.scarecrow:2,RSc", {st_mode=S_IFREG|0600, st_size=2357, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203892996.P6750Q0M114883.scarecrow:2,Sc", {st_mode=S_IFREG|0600, st_size=1561, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203896197.P7621Q0M934348.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=616, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203896810.P8108Q0M440868.scarecrow:2,RS", {st_mode=S_IFREG|0600, st_size=3620, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203900525.P10657Q0M868027.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=6304, ...}) = 0 lstat64("/home/vmail/u13.net/ryan/Maildir/cur/1203902148.P10984Q0M386235.scarecrow:2,S", {st_mode=S_IFREG|0600, st_size=3086, ...}) = 0

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[Dovecot] Lots of assertion PANICs in error log
by Yates Ian Mr (ITCS) 08 Oct '08

08 Oct '08

I have just upgraded to dovecot 1.1.2 and am seeing lots of the following panic messages filling up the error logs: dovecot: Aug 29 09:34:32 Panic: IMAP(user): file index-sync.c: line 39 (index_mailbox_set_recent_uid): assertion failed: (seq_range_exists(&ibox->recent_flags, uid)) dovecot: Aug 29 09:34:32 Error: IMAP(user): Raw backtrace: imap [0x483888] -> imap [0x484293] -> imap [0x483a46] -> imap(index_mailbox_set_recent_seq+0) [0x453f80] -> imap(index_mailbox_set_recent_seq+0x43) [0x453fc3] -> imap [0x43b3e8] -> imap(mbox_sync+0x380) [0x43bdd0] -> imap [0x434bcd] -> imap(index_transaction_commit+0x3c) [0x454f3c] -> imap(cmd_copy+0x344) [0x4167d4] -> imap(cmd_uid+0x52) [0x41a6c2] -> imap [0x41b723] -> imap [0x41b6e8] -> imap [0x41b9ba] -> imap(client_input+0x63) [0x41bb93] -> imap(io_loop_handler_run+0x109) [0x48b029] -> imap(io_loop_run+0x28) [0x48a3f8] -> imap(main+0x3f2) [0x423272] -> /lib64/tls/libc.so.6(__libc_start_main+0xdb) [0x337911c40b] -> imap [0x41578a] dovecot: Aug 29 09:34:32 Error: child 25658 (imap) killed with signal 6 This is just the latest example from this morning, there are plenty to choose from! My system setup is a RHEL4.6 64bit install. I have tried clearing out the old cache files (dovecot.index, dovecot.cache etc) for all the users but I'm still seeing these crash dumps filling my logs. Help! If you require any further information please let me know. I.

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[Dovecot] Bug? Expunging Symlinked Maildir w/ Lazy_expunge Enabled
by Rich at Whidbey Telecom 05 Oct '08

05 Oct '08

Hi all, Using Dovecot 1.0.3 on RedHat Enterprise 5 (kernel 2.6.18-8.1.6.el5PAE), and NFS storage, we symlinked a Maildir folder: /mailstore/user/Maildir/.Junk -> /junkstore/user/Junkmaildir Everything works fine, until we try to expunge, which produces: A04 NO BUG: Unknown internal error This only happens if "lazy_expunge" is enabled: mail_plugins = quota imap_quota acl lazy_expunge lazy_expunge = .EXPUNGED/ .EXPUNGED/ .EXPUNGED/ Lazy_expunge works great on non-symlinked folders. We tried version 1.1 alpha2, which actually crashes in this scenario. The only fix we've found is to disable "lazy_expunge". Attached is our "dovecot -n" config. Anyone have an idea what might be causing this or a workaround? Thanks! Rich richs(a)whidbey.net # 1.0.3: /shared/dovecot.conf base_dir: /var/dovecot-mail/ log_path: /var/dovecot-mail/dovecot.log protocols: imap imaps pop3 pop3s ssl_ca_file: /adminstore/exim/ssl/instantsslroot.crt ssl_cert_file: /adminstore/exim/ssl/public-mail.crt ssl_key_file: /adminstore/exim/ssl/private-mail.key disable_plaintext_auth: no shutdown_clients: no login_dir: /var/dovecot-mail//login login_executable(default): /usr/local/libexec/dovecot/imap-login login_executable(imap): /usr/local/libexec/dovecot/imap-login login_executable(pop3): /usr/local/libexec/dovecot/pop3-login login_user: exim login_greeting: System ready. login_processes_count: 32 login_max_processes_count: 400 verbose_proctitle: yes mail_location: maildir:/mailstore/%Lu/Maildir:INDEX=MEMORY mail_cache_fields: mail_cache_min_mail_count: 65536 mailbox_idle_check_interval: 10 mmap_disable: yes lock_method: dotlock maildir_stat_dirs: yes maildir_copy_with_hardlinks: yes maildir_copy_preserve_filename: yes mail_executable(default): /usr/local/libexec/dovecot/rawlog /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/rawlog /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 mail_plugins(default): quota imap_quota acl lazy_expunge mail_plugins(imap): quota imap_quota acl lazy_expunge mail_plugins(pop3): quota mail_plugin_dir(default): /usr/local/lib/dovecot/imap mail_plugin_dir(imap): /usr/local/lib/dovecot/imap mail_plugin_dir(pop3): /usr/local/lib/dovecot/pop3 imap_client_workarounds(default): delay-newmail outlook-idle imap_client_workarounds(imap): delay-newmail outlook-idle imap_client_workarounds(pop3): outlook-idle pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %Mf pop3_client_workarounds(default): pop3_client_workarounds(imap): pop3_client_workarounds(pop3): outlook-no-nuls oe-ns-eoh namespace: type: private separator: . inbox: yes namespace: type: private separator: . prefix: .EXPUNGED/ location: maildir:/mailstore/%u/Expunged:INDEX=MEMORY hidden: yes auth default: mechanisms: plain login passdb: driver: pam args: exim userdb: driver: ldap args: /adminstore/configs/dovecot-ldap.conf plugin: quota: maildir:storage=250000:ignore=Junk acl: vfile:/adminstore/configs/dovecot-acls

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[Dovecot] sieve discard
by Jim Horner 19 Sep '08

19 Sep '08

Does the keyword/action discard work by default or is there something I have to do in the configuration to get to work... maybe I missed something on http://wiki.dovecot.org/LDA/Sieve I have the following rule: if anyof ( header :contains ["Subject"] ["Test Discard"] ) { discard; stop; } but it delivers to INBOX with or w/o the "stop;". If I change the rule to if anyof ( header :contains ["Subject"] ["Test Discard"] ) { fileinto "spam"; stop; } the message will deliver into my spam folder which makes me think I am doing something wrong with "discard". Using 1.0.2 sieve plug-in. Thanks.

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