The wellknown UIDL- Outlook - multiple messages download with pop3 problem

Ken Murchison murch at
Tue Feb 21 14:14:42 EST 2006

Reinhard Proessler wrote:
> Hello!
> In december 2005 was a thread about downloading multible messages
> via pop3 with Outlook as email client. The reason for this problem
> was a wrong or broken handling of MS Outlook with the UIDL of cyrus
> imapd(pop3d).
> Cyrus Imapd uses a UIDL with variable length (rfc conform) but Outlook
> can not handle this variable length and starts over to download the 
> message if it meets a point where the UIDL changes.
> Well. The problem is caused by Outlook.
> But I have to fix this problem, but I can not fix Outlook, you know.
> Now my questions:
> Has anybody out there already started to work on a patch for the cyrus
> server?
> Are there any suggestions where to patch the (correct working) imapd|popd?

You could try the attached patch and let me know if it solves the problem.

Kenneth Murchison
Systems Programmer
Project Cyrus Developer/Maintainer
Carnegie Mellon University
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