HTTPS Monitor and Sharepoint

Hi,

I have a problem. Im trying to monitor a sharepoint website through a https monitor in SAM 5.5.0. The site has nothing special but AD authentication over standard 443 port. Whenever i test against the host node i get "The remote server returned an error: (403) Forbidden."

The account im using is a web application admin and site admin within sharepoint.

Any ideas?

Thanks

-Kit