[Dovecot] duplicate emails

[Adam Lackorzynski]

Hi,

I now have a second user that is seeing this. Client is thunderbird.

On Sun Dec 03, 2006 at 16:42:49 +0200, Timo Sirainen wrote:
> On Tue, 2006-11-21 at 09:48 +0100, Adam Lackorzynski wrote:
> > One of my users is seeing duplicate mails occasionally too. Client is
> > Sylpheed with POP3. It is quite seldom, maybe twice a month, using
> > POP3 several hours a day. We've been seeing this for some time now,
> > including up to rc13. 
> 
> Is the client configured to keep the mails in the server or delete them?

Both delete the mails.

I've attached a log from the sylpheed user that hopefully shows
something.
 
> > > What do you see in logs? Does the client disconnect normally, or is
> > > there a timeout, crash or something?
> > 
> > Nothing exciting in the logs, everything looks normal.
> 
> If the client is configured to delete the mails, I think the only
> possible reason is that the connection dies before the mails have been
> deleted. So when that happens, it would be useful to know what exactly
> the log says was the reason. Possible reasons are:
> 
>  - Logged out: A normal logout with QUIT command. Should have worked
> correctly.
>  - Disconnected for inactivity: This has sometimes been a bug in
> Dovecot, but I'm not aware of any such bugs currently. It could also
> just be a network problem.
>  - Disconnected: The client disconnected. Probably a network problem.
> 
> Then there are also some other reasons which could be Dovecot problems.

I'd say for sure that there's no network problem involved. The log file
shows a normal QUIT, and hopefully shows more.






Adam
-- 
Adam                 adam at os.inf.tu-dresden.de
  Lackorzynski         http://os.inf.tu-dresden.de/~adam/
-------------- next part --------------
* Connecting to POP3 server: pop-server...
[16:17:20] POP3< +OK Go ahead!
[16:17:20] POP3> USER user9
[16:17:20] POP3< +OK
[16:17:20] POP3> PASS ********
[16:17:20] POP3< +OK Logged in.
[16:17:20] POP3> STAT
[16:17:20] POP3< +OK 5 84524
[16:17:20] POP3> UIDL
[16:17:20] POP3< +OK
[16:17:20] POP3> LIST
[16:17:20] POP3< +OK 5 messages:
[16:17:20] POP3> RETR 1
[16:17:20] POP3< +OK 21561 octets
[16:17:20] POP3> DELE 1
[16:17:20] POP3< +OK Marked to be deleted.
[16:17:20] POP3> RETR 2
[16:17:20] POP3< +OK 4039 octets
[16:17:20] POP3> DELE 2
[16:17:20] POP3< +OK Marked to be deleted.
[16:17:20] POP3> RETR 3
[16:17:20] POP3< +OK 50347 octets
[16:17:20] POP3> DELE 3
[16:17:20] POP3< +OK Marked to be deleted.
[16:17:20] POP3> RETR 4
[16:17:20] POP3< +OK 5201 octets
[16:17:20] POP3> DELE 4
[16:17:20] POP3< +OK Marked to be deleted.
[16:17:20] POP3> RETR 5
[16:17:20] POP3< +OK 3376 octets
[16:17:20] POP3> DELE 5
[16:17:20] POP3< +OK Marked to be deleted.
[16:17:20] POP3> QUIT
[16:17:20] POP3< +OK Logging out, messages deleted.
* Connecting to POP3 server: pop-server...
[16:17:38] POP3< +OK Go ahead!
[16:17:38] POP3> USER user9
[16:17:38] POP3< +OK
[16:17:38] POP3> PASS ********
[16:17:38] POP3< +OK Logged in.
[16:17:38] POP3> STAT
[16:17:38] POP3< +OK 4 62963
[16:17:38] POP3> UIDL
[16:17:38] POP3< +OK
[16:17:38] POP3> LIST
[16:17:38] POP3< +OK 4 messages:
[16:17:38] POP3> RETR 1
[16:17:38] POP3< +OK 4039 octets
[16:17:38] POP3> DELE 1
[16:17:38] POP3< +OK Marked to be deleted.
[16:17:38] POP3> RETR 2
[16:17:38] POP3< +OK 50347 octets
[16:17:39] POP3> DELE 2
[16:17:39] POP3< +OK Marked to be deleted.
[16:17:39] POP3> RETR 3
[16:17:39] POP3< +OK 5201 octets
[16:17:39] POP3> DELE 3
[16:17:39] POP3< +OK Marked to be deleted.
[16:17:39] POP3> RETR 4
[16:17:39] POP3< +OK 3376 octets
[16:17:39] POP3> DELE 4
[16:17:39] POP3< +OK Marked to be deleted.
[16:17:39] POP3> QUIT
[16:17:39] POP3< +OK Logging out, messages deleted.