[sync] Authentification Error with synchronisation

[Marc Stiebich]

Hi all,

im using Horde Groupware 1.1-RC1 and i can't make a synchronisation with 
any sync client i use because
i always get an error that the sync client can't authentificat.
When i try to open a sync adress in the browser (e.g. 
http://www.domain.com/hordepath/rpc.php/kronolith/mail@domain.com or
http://www.domain.com/hordepath/ics.php?c=mail@domain.com), i always get 
the Authentification Dialog, when i type the
authentification credits, the Authentification Dialog comes again.
I use the full domain name to login in (e.g. mail at domain.com) and sure 
the right password.
Login in to Horde Webmail is no problem.
I search the mailing list for similar problems but no luck.
Can anybody help me?
Thanks in advance!

Regards

MArc Stiebich