[Dovecot] dovecot and maillists problem

Thu Aug 25 08:17:43 EEST 2011

Hello there!

I have a little trouble with using dovecot as lmtp and maillists.
I use 
dovecot 2.0.13
with exim 4.72 on Debian 6.0. (All stuff at one host).

info of maillists is store in mysql table, for example:
+---------+-------------------------------------------------------------------------------------------------+
| name    | recipients                                                                                      |
+---------+-------------------------------------------------------------------------------------------------+
| Hab_Tax | 2504000067-253601001.253809737993 at 25.example.org,2721097514-272101001.271300057673 at .example.org |
+---------+-------------------------------------------------------------------------------------------------+

The problem is:
When I send a letter to short maillist (as above) it get the same ID and stored only once in the maildir of one user who is the member of that maillist - that's ok, but
When I send a letter to maillist with a large number of recipients it occurred that it's saved more than one, because of the headers added by dovecot lmtp (I've changed host name):

diff letter_in_one_user/1314238006.M841940P6916.pink\,S\=12778136\,W\=12953189 letler_in_second_user/new/1314237993.M460165P6916.pink\,S\=12778136\,W\=12953189 
3,4c3,4
< 	by pink.atlas-2.ru (Dovecot) with LMTP id 6UiGJBWuVU4EGwAA1nFjLA
< 	; Thu, 25 Aug 2011 13:06:46 +1100
---
> 	by pink.atlas-2.ru (Dovecot) with LMTP id VUeGJBWuVU4EGwAA1nFjLA
> 	; Thu, 25 Aug 2011 13:06:29 +1100

It's the same letter accept the date and id.

What I get in logs is:

I see that exim send letters in maillist with one and the same id:
...skipped...
13:06:46 1QwPKe-0001nU-U5 <2502 at example.org>
...
13:06:47 1QwPKe-0001nU-U5 <2502 at example.org>
...
But in logs of dovecot I see:
13:06:14 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: wUWGJBWuVU4EGwAA1nFjLA:
13:06:18 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: wEWGJBWuVU4EGwAA1nFjLA:
13:06:22 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: JkaGJBWuVU4EGwAA1nFjLA:
13:06:26 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: i0aGJBWuVU4EGwAA1nFjLA:
13:06:30 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: 8EaGJBWuVU4EGwAA1nFjLA:
13:06:34 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: VUeGJBWuVU4EGwAA1nFjLA:
13:06:37 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: ukeGJBWuVU4EGwAA1nFjLA:
13:06:42 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: H0iGJBWuVU4EGwAA1nFjLA:
13:06:46 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: hEiGJBWuVU4EGwAA1nFjLA:
13:06:47 msgid=<E1QwPKe-0001nU-U5 at pink.example.org>: 6UiGJBWuVU4EGwAA1nFjLA:

Also in dovecot log I've noticed that:
at first auth is searching info in sql for 200 users
then log continues with lmtp's info
then auth is searching info in sql for another portion of users and this loop in log continues.

Dovecot.conf:
http://pastebin.com/ueCBU3bP

dovecot.sql:
http://pastebin.com/kqCq52mC

dovecot.log
http://pastebin.com/YiyMWpx1

exim.conf:
http://pastebin.com/F4MNQkAx

exim.log:
http://pastebin.com/wn83TZpX