unable to login to CWA Ajax

[Jay]

We have set up a communicator web access at this location.
https://myhost.mycompany.com:84
It has "MS Office communicator web access AJAX service SDK" installed.

On my dev box : I am trying to login to the web
communicator(https://myhost.mycompany.com:84) using the SDK. It works fine.

When I deploy this to my webserver: The code that signs in to the
communicator - does NOT work.
It gives me a "403 forbidden" error.

I know this is a security issue. But I dont know where the problem is..

Please help!