[Dovecot] Problems with (probably) Dovecot

Ejay Hire ehire at globaloptions.com
Wed Apr 11 20:01:34 EEST 2007

Hi Frank.

What I think Timo is trying to say is... The issue is most likely that
the system has "overflowed" the Message uid's.  This means that the
message id (a number) has grown too large to fit within the size
allocated for it in v 0.99.  This can happen in an older system that has
been in use for a long time.  Message UIDL's are handled differently in
the current RC's, and Upgrading should fix it.

Upgrading isn't terribly difficult.  The only catch is that in the new
config file, you have to tell it what format you want to use for the
UIDLs.  The documentation makes a suggestion,    
pop3_uidl_format = %08Xu%08Xv
 and it works for us.

Hope that helps.


On Tue, 2007-04-10 at 20:43 +0000, Frank Neps wrote:
> Hi Timo,
> thanks for your message.
> Timo Sirainen wrote:
> >
> > On 10.4.2007, at 23.15, Frank Neps wrote:
> >> Trying to access my messages on the server via IMAP protocol using 
> >> Outlook (2000 or 2002 or 2003) leads to an error message "Invalid 
> >> messageset: xxxxxxxx"  (where xxxxxxxx is a  changing number). No 
> >> data is displayed, the headers are not updated. Squirrelmail says, 
> >> that the messages are not available any more. And Thunderbird joins 
> >> in with Outlook and also tells me something about an invalid 
> >> messageset. For some reasons (and some messages, not all) Kontact / 
> >> Kmail does not give me error message, however, my main system is not 
> >> a Linux one and therefore I'd like to get that fixed, if possible.
> >
> > That most likely means that message UIDs are 2^31 or larger. Now what 
> > that would happen with upgrading, I've no idea, unless it was just a 
> > "happy" conincidence.
> >
> > What version were you upgrading to, and is it with mbox or maildir?
> I did not yet upgrade to Dovecot 1.0 because in the documentation it 
> sounded as if it were not just starting an installation routine, but 
> involves quite some work. With the thought in mind, that I have to move 
> to a new server in the near future anyway, I wanted to avoid the upgrade.
> The current Dovecot version (still installed) is 0.99. I use the mbox 
> format.
> Thanks,
> Frank

More information about the dovecot mailing list