dovecot - Apr 2010 - Problems with Mailbox is in inconsistent state, please relogin.

Dear Dovecot users,

I'm a sysadmin in a company that recently migrated the IMAP from
courier-imap to dovecot :-) *urray*

Everything with the perl migrating scripts (version 1.0) went with OKs
and it was a lot of fun (and pray) to move 400Gb of mails and migrate..
and everything is working even better :-)

The problem is for some outside users that use webmails, like:
   - Squirrel
   - Roundcube
   - Horde

They claim that the connection is constantly dropping.. You might say
now: "Webmail's fault!!!" as I said in the beginning :)

But the IMAP logs shows SEVERAL times (almost every 10mins ?!):

Apr 28 21:10:48 olive dovecot: IMAP(rcoelho):
Maildir /cluster/mail/mailboxes/rcoelho sync: UID inserted in the middle
of mailbox (192736 > 192720, file = msg.LDW0C)
Apr 28 21:10:48 olive dovecot: IMAP(rcoelho): Disconnected: Mailbox is
in inconsistent state, please relogin.

Apr 28 19:14:11 olive dovecot: IMAP(pcorreia):
Maildir /cluster/mail/mailboxes/pcorreia sync: UID < next_uid (7874 <
7875, file = msg.5BNVC)
Apr 28 19:14:12 olive dovecot: IMAP(pcorreia): Disconnected: Mailbox is
in inconsistent state, please relogin.


and so on.

I read somewhere on the web that configuring the mbox_lazy_write=no
should work .. it did not :-)

I have CentOS 5.4 in our mailserver, so the version of dovecot is not
the latest (it is 1.0.7)..

But of course, this is production environment and I don't want to update
if its not needed :-)

So my questions are:
   - Is this a known bug for this version and I have to upgrade ?
   - Is this a problem in my configs for dovecot ?
   - Can this be other problem than dovecot ? -- so probably i should be
able to add more debug anoying messages to our logs ?
   - Probably something went wrong in the migration for these maildirs?
So now what can we do to fix this ?

Our mail is working and, at the moment, I found 3 users with this
error.. They have about 10Gb of mail each, I don't think this is a
problem for dovecot.. only for our storages.. :-)

Tks for your patience,
   Best Regards!

on 4-28-2010 2:06 PM Daniel Machado Grilo spake the
following:
> Dear Dovecot users,
> 
> I'm a sysadmin in a company that recently migrated the IMAP from
> courier-imap to dovecot :-) *urray*
> 
> Everything with the perl migrating scripts (version 1.0) went with OKs
> and it was a lot of fun (and pray) to move 400Gb of mails and migrate..
> and everything is working even better :-)
> 
> The problem is for some outside users that use webmails, like:
>    - Squirrel
>    - Roundcube
>    - Horde
> 
> They claim that the connection is constantly dropping.. You might say
> now: "Webmail's fault!!!" as I said in the beginning :)
> 
> But the IMAP logs shows SEVERAL times (almost every 10mins ?!):
> 
> Apr 28 21:10:48 olive dovecot: IMAP(rcoelho):
> Maildir /cluster/mail/mailboxes/rcoelho sync: UID inserted in the middle
> of mailbox (192736 > 192720, file = msg.LDW0C)
> Apr 28 21:10:48 olive dovecot: IMAP(rcoelho): Disconnected: Mailbox is
> in inconsistent state, please relogin.
> 
> Apr 28 19:14:11 olive dovecot: IMAP(pcorreia):
> Maildir /cluster/mail/mailboxes/pcorreia sync: UID < next_uid (7874 <
> 7875, file = msg.5BNVC)
> Apr 28 19:14:12 olive dovecot: IMAP(pcorreia): Disconnected: Mailbox is
> in inconsistent state, please relogin.
> 
> 
> and so on.
> 
> I read somewhere on the web that configuring the mbox_lazy_write=no
> should work .. it did not :-)
> 
> I have CentOS 5.4 in our mailserver, so the version of dovecot is not
> the latest (it is 1.0.7)..
> 
> But of course, this is production environment and I don't want to
update
> if its not needed :-)
> 
> So my questions are:
>    - Is this a known bug for this version and I have to upgrade ?
>    - Is this a problem in my configs for dovecot ?
>    - Can this be other problem than dovecot ? -- so probably i should be
> able to add more debug anoying messages to our logs ?
>    - Probably something went wrong in the migration for these maildirs?
> So now what can we do to fix this ?
> 
> Our mail is working and, at the moment, I found 3 users with this
> error.. They have about 10Gb of mail each, I don't think this is a
> problem for dovecot.. only for our storages.. :-)
> 
> Tks for your patience,
>    Best Regards!
> 
> 
There are MANY advances in the newer versions. I would get a newer stable
version from atrpms.net and upgrade... There is migration docs on
wiki.dovecot.org

On Wed, 2010-04-28 at 22:06 +0100, Daniel Machado Grilo wrote:
> Maildir /cluster/mail/mailboxes/rcoelho sync: UID inserted in the
> middle
> of mailbox (192736 > 192720, file = msg.LDW0C) 
http://wiki.dovecot.org/MailboxFormat/Maildir#Procmail_Problems

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Thank you for your answer Timo!

I've also upgraded to latest stable version of dovecot and I don't get 
these inconsistent errors now..anyway I will change the procmail directive.

Best Regards
    Daniel

-- 
Daniel Grilo
Partner of Grupo PDM
Av. Conde Valbom 30, 3o
1050-068 Lisboa (Portugal)
web: http://www.pdmfc.com     
Tel: +351 21 357 20 29 // mobile: +351 91 388 94 39 (ext: 716)
Fax: +351 21 357 20 31 

question = ( to ) ? be : ! be;
		-- Wm. Shakespeare



Timo Sirainen wrote:
> On Wed, 2010-04-28 at 22:06 +0100, Daniel Machado Grilo wrote:
>
>   
>> Maildir /cluster/mail/mailboxes/rcoelho sync: UID inserted in the
>> middle
>> of mailbox (192736 > 192720, file = msg.LDW0C) 
>>     
>
> http://wiki.dovecot.org/MailboxFormat/Maildir#Procmail_Problems
>
>