[Dovecot] Sudden IMAP problem - UID Errors

[Jamie Heckford]

Hi,

We have quite happily been running dovecot with no issues at all for 
approx. two years now and have had no problem whatsoever. Great work :)

BUT (there is always a but!).... yesterday one of our users started 
complaining that they were having issues with their mail. I checked and 
although they can still view their IMAP mailbox ok it constantly throws 
up error messages such as:

"The UID of a message changed unexpectedly. This typically indicates a 
server bug. Your program may not function properly after this.

MsgSeqNum 131: Previous UID: 21402, New UID: 21555
	Protocol: IMAP"

and

"Your server has reported a UID which does not comply with the IMAP 
standard. This typically indicates a server bug. Your program may not 
function properly after this."

This is using Outlook 2003 as the IMAP client, and is only affecting a 
single user.

Server is dovecot-0.99.14 running on FreeBSD 4.9-RELEASE #1: Thu Apr 15 
10:00:08 GMT 2004

Anybody seen this before or have any suggestions? Also is there a way I 
can make the logging more verbose as I only get info on date/user/ip 
when they login. I did see a --raw-log or similar compile flag, is this 
whats needed?

I suspect this is Outlook being stupid and not dovecot though.

Any help would be greatly received.

Many thanks!

-- 
Jamie Heckford
Network Manager
Trident Microsystems Ltd.

t: +44(0)1737-780790
f: +44(0)1737-771908
w: http://www.trident-uk.co.uk/