Another free/busy odditiy - Kontact vs. DNS?

[ITSEF Admin]

Hi all,

while I was resolving my own problem with Kontact and free/busy (see list 
archives... it was a problem with a SSL certificate), several other users 
came to me also with free/busy problems. Again, free/busy simply did not 
work - and I was not even able to find any requests from them in the server 
logs. After some experimenting I finally found the solution for this problem 
as well: Contrary to our other users (and myself), the users with the problem 
had their FreeBusyRetrieveUrl set to: "https://KOLABSERVER/freebusy/"
All other users have "https://KOLABSERVER.DOM.AIN/freebusy/". To my great 
surprise, only the second version (with the full domain) works. This is 
especially puzzling, as "host KOLABSERVER" yields the same result as "host 
KOLABSERVER.DOM.AIN" on the command line. Same with Konqueror - it does not 
matter whether I enter the domain or not, Konqueror does display the correct 
page on our Kolab server. Kontact seems to be the only exception.

Does anybody have an idea why this is? Should I file a bugreport?

Regards,

Thomas