Get an Error when try to login

[quicksand]

hello everbody,

I'm getting the following error when i try to login to my webmail :

Code Select Expand


SERVICE CURRENTLY NOT AVAILABLE!
Error No. [0x01F4]

But this error occure only in one domain name, but not in others.

Here is my configuration :

DEBIAN ETCH 4.0r2
PLESK 8.4
RoundCube V.0.1 Stable
I have 50 domains in my server.

How can i solve this problem ??

Thanks