- dovecot - dovecot.org

[Dovecot] locking question
by Paul Amaral 27 May '07

27 May '07

Hi, I'm using Maildir with dovecot .99, I'm getting some errors with fcntl locks. Do I still need to use a locking mechanism if I'm using maildir with pop3 access. For reasons I won't go into I cant upgrade from .99 to version one at the time. I'm getting this error with some users, I have tried to manually delete the .imap.index file but the error comes back, any thoughts? May 24 12:11:21 pop imap(generalg): Timeout while waiting for release of exclusive fcntl() lock for index file /home/g/generalg/Ma ildir/.INBOX/.imap.index TIA, Paul

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[Dovecot] Address extensions with dovecot LDA
by Nick Kartsioukas 27 May '07

27 May '07

Greetings! I'm using Dovecot and Postfix with virtual mailboxes, the mailbox data is contained in a MySQL database. I'd like to use the Dovecot delivery agent so I can support Sieve filters. However, I'm not sure how to get the delivery agent to work with the Dovecot auth mechanism and MySQL to do proper lookups of email addresses with address extensions (such as test-blah(a)example.com) Does anyone have a similar setup that can tell me how I might get this to work? -- Nick Kartsioukas | KF6UZB change(a)nightwind.net | NK2694

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[Dovecot] Quick question on multiple access to dovecot indexes
by Adam McDougall 26 May '07

26 May '07

I have up to 4 servers that will run dovecot behind a load balancer, which means the same user might be accessing the same mailbox from multiple servers, and it seems like dovecot doesn't like multiple access to the dovecot indexes for the one user since I currently have them stored in a nfs home directory. Is this a bad thing? Must I keep a seperate index location per server? Just today I started running dovecot on more than one server like this and started seeing things in the logs like: May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): Corrupted transaction log file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index.log: end_offset (1332) > current sync_offset (1244) May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): broken sync positions in index file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): fscking index file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): Fixed index file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index: log file sync pos 2,1332 -> 2, 1244 May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): Unexpected transaction log desync with index /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index May 25 11:19:13 boomhauer dovecot: IMAP(mcdouga9): Disconnected: Mailbox is in inconsistent state, please relogin. May 25 11:19:17 dauterive dovecot: IMAP(mcdouga9): file mail-index.c: line 983 (mail_index_sync_from_transactions): assertion failed: (hdr.messages_count == (*map)->hdr.messages_count) May 25 11:19:17 dauterive dovecot: child 16386 (imap) killed with signal 6 ... May 25 11:19:53 dauterive in.imapproxyd[17211]: LOGIN: '"mcdouga9"' (127.0.0.1:53650) on existing sd [9] May 25 11:19:53 dauterive dovecot: IMAP(mcdouga9): Transaction log file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index.log: marked corrupted May 25 11:19:53 dauterive dovecot: IMAP(mcdouga9): Transaction log file /home/mcdouga9/Maildir/dovecot/public/indexes/decs/.support.In/dovecot.index.log.2: marked corrupted

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[Dovecot] Dovecot crashes with malformed Qpopper's mbox
by 前田剛 26 May '07

26 May '07

I am testing migration from Qpopper 4.0.5 and have come across a problem. Dovecot dies while processing UIDL command when accessing malformed Qpopper's mbox which has duplicated "From " separator. Qpopper occasionally makes such header while rewriting mbox. In the attached file, unnecessary "From " at line 3. ---------------- * Dovecot 1.0.0 on Debian 4.0(x86) * ext3 filesystem(not NFS) * description Dovecot dies while processing UIDL command with malformed Qpopper's mbox which has duplicated "From " separator. This occurs when "pop3_reuse_xuidl" is "yes". conversation with Dovecot ~~~~~~~~~~~~~~~~~~~~~~~~~ $ telnet localhost 110 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. +OK Dovecot ready. user xxxxxxxx +OK pass xxxxxxxx +OK Logged in. uidl Connection closed by foreign host. * Dovecot configuration # /usr/local/etc/dovecot.conf protocols: imap pop3 ssl_disable: yes disable_plaintext_auth: no login_dir: /usr/local/var/run/dovecot/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 mail_extra_groups: mail mail_location: mbox:~/:INBOX=/var/mail/%u mail_full_filesystem_access: yes mbox_write_locks: fcntl mail_executable(default): /usr/local/libexec/dovecot/imap mail_executable(imap): /usr/local/libexec/dovecot/imap mail_executable(pop3): /usr/local/libexec/dovecot/pop3 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 pop3_reuse_xuidl(default): no pop3_reuse_xuidl(imap): no pop3_reuse_xuidl(pop3): yes pop3_uidl_format(default): pop3_uidl_format(imap): pop3_uidl_format(pop3): %08Xu%08Xv auth default: passdb: driver: pam userdb: driver: passwd socket: type: listen client: path: /var/spool/postfix/private/auth mode: 432 user: postfix group: postfix master: * how to reproduce 1. set "pop3_reuse_xuidl = yes". 2. replace test user's mailbox with attached file. 3. pop3 login and exec "UIDL". POP3 process will die. -- // -------------------------------------------------------------- // MAEDA, Go <maeda-g(a)secom-sanin.co.jp> POP3(test01): file ../../../src/lib/array.h: line 157 (_array_idx): assertion failed: (idx * array->element_size < array->buffer->used) POP3(test01): Raw backtrace: pop3 [0x80a9fab] -> pop3 [0x80a99a9] -> pop3 [0x807ec2c] -> pop3(index_mail_get_headers+0x254) [0x807eeb4] -> pop3(index_mail_get_first_header+0x18) [0x807ef48] -> pop3(mail_get_first_header+0x16) [0x809b746] -> pop3 [0x8057ae9] -> pop3 [0x8057c7f] -> pop3 [0x805674e] -> pop3(io_loop_handler_run+0x128) [0x80b03e8] -> pop3(io_loop_run+0x28) [0x80af858] -> pop3(main+0x82) [0x8058792] -> /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xc8) [0xb7dffea8] -> pop3 [0x8055c21] child 4788 (pop3) killed with signal 6 From xxx(a)xx.xxxxxxx.xx.xx Sat Feb 17 19:27:47 2007 X-UIDL: i[f"!$h*!!S67!!/RW!! From xxx(a)xx.xxxxxxx.xx.xx Sat Feb 17 19:27:47 2007 Return-Path: <xxx(a)xx.xxxxxxx.xx.xx> X-Original-To: xxxxxxxx(a)xx.xxxxxxx.xx.xx Delivered-To: xxxxxxxx(a)xx.xxxxxxx.xx.xx Received: xxxx xxxx-xxxx-xxxxxx.xxxxxxx.xx.xx (xx [xxx.x.x.x]) xx xx-xxxxxxxx.xxxxxxx.xx.xx (xxxxxxx) xxxx xxxx xx xxxxxxxxxx xxx <xxxxxxxx(a)xx.xxxxxxx.xx.xx>; xxx, xx xxx xxxx xx:xx:xx +xxxx (xxx) Received: xx xx.xxxxxxx.xx.xx (xxxxxxx, xxxx xxxxxx xx) xx xxxxxxxxxx; xxx, xx xxx xxxx xx:xx:xx +xxxx (xxx) X-Mailer: xxxxxxx xx.x xx xxx.xxxxxx.xx.xx X-HTTP_REFERER: xxxx://xxx.xx-xxxxxxx.xx.xx/xxxx/xxxxx.xxxx Errors-To: xxxxxxxxx(a)xx-xxxxxxx.xx.xx To: xxxxxxxxx(a)xx-xxxxxxx.xx.xx From: x.xxxxxxxxx(a)xxxxxxx.xxx Subject: $x<xxx$x$?$$(xx-xxxx Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="ISO-2022-JP" Message-Id: <xxxxxxxxxxxxxx.xxxxxxxxxx(a)xx.xxxxxxx.xx.xx> Date: Sat, 17 Feb 2007 19:27:47 +0900 (JST) Status: RO xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx From xxx(a)xx.xxxxxxx.xx.xx Tue Feb 20 14:06:25 2007 X-UIDL: 7;j"!L;8"!b\%#!pH5!! Return-Path: <xxx(a)xx.xxxxxxx.xx.xx> X-Original-To: xxxxxxxx(a)xx.xxxxxxx.xx.xx Delivered-To: xxxxxxxx(a)xx.xxxxxxx.xx.xx Received: xxxx xxxx-xxxx-xxxxxx.xxxxxxx.xx.xx (xx [xxx.x.x.x]) xx xx-xxxxxxxx.xxxxxxx.xx.xx (xxxxxxx) xxxx xxxx xx xxxxxxxxxx xxx <xxxxxxxx(a)xx.xxxxxxx.xx.xx>; xxx, xx xxx xxxx xx:xx:xx +xxxx (xxx) Received: xx xx.xxxxxxx.xx.xx (xxxxxxx, xxxx xxxxxx xx) xx xxxxxxxxxx; xxx, xx xxx xxxx xx:xx:xx +xxxx (xxx) X-Mailer: xxxxxxx xx.x xx xxx.xxxxxx.xx.xx X-HTTP_REFERER: xxxx://xxx.xx-xxxxxxx.xx.xx/xxxx/xxxxx.xxxx Errors-To: xxxxxxxxx(a)xx-xxxxxxx.xx.xx To: xxxxxxxxx(a)xx-xxxxxxx.xx.xx From: xxxxx(a)xxxxx-xxx.xx.xx Subject: $x<xxx$x$?$$(xx-xxxx Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="ISO-2022-JP" Message-Id: <xxxxxxxxxxxxxx.xxxxxxxxxx(a)xx.xxxxxxx.xx.xx> Date: Tue, 20 Feb 2007 14:06:25 +0900 (JST) Status: RO xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

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[Dovecot] Return error instead of dying on time back skip?
by Amon Ott 26 May '07

26 May '07

Hello everybody! Currently, dovecot just kills itself if it detects that time has moved backwards more than a hardcoded number of seconds. I accept the reasons, but I do not like to restart dovecot manually after waiting for time to move forward again. A cron job would not help, because time might still be wrong when it restarts dovecot. All our systems run ntpd, but they might be offline for a while before they get contact to a time server, e.g. because of DSL problems. When they do get contact and time is too far off, ntpd sets the new time directly (yes, it could gradually do that, but it might take ages). Now I wonder if Dovecot could return errors to the users instead of dying until time is fine again, e.g. "System time has moved backwards, please come back in n seconds". If the time skip is just a few seconds, it can of course delay and then go on as it does now. With this change, no admin would be needed to carefully restart Dovecot at the right time. I have not looked into Dovecot code myself yet, but could try a patch if necessary. Amon Ott -- Amon Ott - m-privacy GmbH Am Köllnischen Park 1, 10179 Berlin Tel: +49 30 24342334 Fax: +49 30 24342336 Web: http://www.m-privacy.de Handelsregister: Amtsgericht Charlottenburg HRB 84946 Geschäftsführer: Dipl.-Kfm. Holger Maczkowsky, Roman Maczkowsky GnuPG-Key-ID: EA898571

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[Dovecot] dovecot.org DNS finally ok
by Timo Sirainen 26 May '07

26 May '07

All DNS caches that had the old dovecot.org IP should finally be expired by now. About 20 people were unsubscribed because of bounces. I've subscribed them back. I think I'm also going to set up a dovecot.org mirror which can be quickly brought up if the current dovecot.org happens to break for some reason. www.dovecot.org and wiki.dovecot.org at least needs to be up quickly. BTW. Anyone is free to set up their own dovecot.org mirror: rsync -qavz --delete dovecot.org::hg hg rsync -qavz --delete dovecot.org::dovecotweb www rsync -qavz --delete dovecot.org::dovecotwiki wiki rsync -qavz --delete dovecot.org::dovecotmail mail rsync -qavz --delete dovecot.org::dovecotnewsmail mail-news rsync -qavz --delete dovecot.org::dovecotcvsmail mail-cvs I don't want any official mirrors though. They're more trouble than worth. :)

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[Dovecot] question mailbox format
by sc2＠gmx.at 26 May '07

26 May '07

i set mail_location = mbox:/var/spool/mail/%u and protocols = pop3s pop3 why he trys to create and use imap format?` in log are May 25 18:52:25 mail dovecot: pop3-login: Login: user=<richard>, method=PLAIN, rip=80.xx.xx.xx, lip=xx.xx.24.29, TLS May 25 18:52:26 mail dovecot: POP3(richard): open(/var/spool/mail/richard/inbo x, O_CREAT) failed: Not a directory May 25 18:52:26 mail dovecot: POP3(richard): mkdir_parents(/var/spool/mail/richard/.imap/INBOX) failed: Not a directory May 25 18:52:26 mail dovecot: POP3(richard): stat() failed with mbox file /var/ spool/mail/richard/inbox: Not a directory May 25 18:52:26 mail dovecot: POP3(richard): Couldn't init INBOX: Internal erro r occurred. Refer to server log for more information. [2007-05-25 18:52:25] May 25 18:52:26 mail dovecot: POP3(richard): Mailbox init failed top=0/0, retr= 0/0, del=0/0, size=0 friendly regards and thx

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[Dovecot] Quota warning not generated
by Doug Council 26 May '07

26 May '07

I am testing out the unofficial quota warning patch with Dovecot 1.0.0, and no matter what values I use for the storage or messages values, the warning script is never executed. My plugin settings are: plugin { quota = maildir:storage=20480 quota_warning = storage=80%:messages=10 /usr/local/bin/quota-warning.sh } I've tried the following quota_warning lines without any luck: quota_warning = storage=80% /usr/local/bin/quota-warning.sh quota_warning = messages=10 /usr/local/bin/quota-warning.sh quota_warning = storage=80%:messages=10 /usr/local/bin/quota-warning.sh The quota-warning.sh script is set to 0755 and currently just syslogs a warning using logger(1). Run independently of Dovecot, it works fine. Here is a sample maildirsize file (if that is at all important) from when I tried the messages=10 setting: 10485760S 335322 12 14016 1 58058 1 46529 1 37623 1 55252 1 61901 1 53422 1 56228 1 There are more than 10 messages in the mailbox, but the quota-warning.sh script never gets executed. When using storage=80%, the maildirsize file has the correct values (not included in this message), but it never executes the script as well. Does anyone have any ideas? Thanks, -Doug

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[Dovecot] How about a "pipe" plugin?
by Nicolas Boullis 25 May '07

25 May '07

Hi, I have written a plugin so that each time a message is added to a specific box, a program is run and the message is piped into it. Note that the message is also really added to the box. I've been using it for nearly 3 month, for spam/ham learning, and have not had any problem with it. I guess it could also be used to implement an out box (I remember seeing someone asking for such a feature on this list). Currently, I use it with a config like this: (...) namespace private { separator = . location = maildir:/var/mail/%u inbox = yes hidden = no } namespace public { separator = . prefix = learn. location = maildir:/var/learn/%u inbox = no hidden = no } (...) plugin { (...) pipe = /var/learn/%u/.spam:spamc -d some.host -L spam pipe2 = /var/learn/%u/.ham:spamc -d some.host -L ham (...) } Would people be interested by such a feature? If enough people show some interest, I can try to convince my boss to let me release this plugin GPL-licensed. Cheers, Nicolas Boullis

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[Dovecot] Will pay $500 towards a Dovecot feature
by Marc Perkel 25 May '07

25 May '07

10 days ago I proposed this addition (see below) to Dovecot and got a lot of positive response. I would like to make it happen. I'm willing to contribute $500 to the development of this feature. It doesn't have to be implemented perfectly but needs to be workable to the extent that I can telnet into the Dovecot server and run it manually from the command line. I want to at least be able to run a simple script that I will write to add or remove someone from a black list text file. Timo has limited time but has indicated that he will allow it as a kind of undocumented feature (or wiki documented only). This is a sort of proof of concept feature and if it ever becomes a standard the standard will probably be different. However, we should implement it in a way that would be as close to a standard as possible. So - I'm looking for a programmer to make it happen. I'm also looking for others who might also kick in a few bucks as well if necessary. Here's the rough spec. ---------- Here's some thoughts I'd like to throw out there. I know it's not standard IMAP protocol but someone has to try new ideas first and I want to see what people (Timo) think of this. IMAP establishes a connection between the client and the server. Wouldn't it be great if it could be a conduit to let custom Thunderbird plugins talk to custom server application over the IMAP interface? For example, personalized server settings. Suppose for example I want Thunderbird to edit my server side white lists or black lists or any other setting? Wouldn't it be nice if IMAP supported these changes? The connection is made. It's a secure connection that's been authenticated. Lets use it! Here's my initial thoughts on this. Suppose we extended IMAP to include an EXECUTE command as follows: EXECUTE command parameter, parameter .... On the server side is a config file that has the commands that execute will allow and what programs they run. When the execute command is seen by Dovecot then Dovecot runs the program in the list with the parameters passed. For example, suppose there is a command to add a user to a server side blacklist. 100 execute blacklist add joe(a)smith.com 100 ok Dovecot would open a two way connection to the server application allowing the client to talk to any application that is configured and can send and receive text. The connection persists until the server end terminates or the client closes the connection. With a tool like this one can write generic applications easily that would greatly expand what email clients can do interacting with the server. Not only can setting be changes but you could interact with server side calendars, pick up voice messages from phone systems, run any sort of groupware, all over a generic IMAP connection with this simple extension. Example: 100 EXECUTE calendar 100 ok 100 list schedule today 8:00 10:00 100 8:00 make coffee 100 9:00 meeting with boss 100 9:30 Call Joe Blow at 415-555-1212 100 ok 100 quit 100 ok One thing I'd like to use it for is an outgoing SMTP connection to send outgoing email over IMAP. A session might look like this: 999 EXECUTE smtp 999 220 darwin.ctyme.com ESMTP Exim 4.67 Sun, 13 May 2007 06:52:26 -0700 999 helo ctyme.com 999 250 darwin.ctyme.com Hello localhost [127.0.0.1] 999 mail from:marc@perkel.com 999 250 OK 999 rcpt to:dovecot@dovecot.org 999 250 Accepted ...... 999 quit 999 OK Config File: There would have to be a config file that would be a table of what command run what. An example might look like this: calendar: /usr/bin/dovecot/calendar blacklist: /etc/exim/scripts/blacklist Probably might eventually want to add UID/GID and root directory restrictions for security. Login information and connection IP should be passed in the environment.

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