Question : Can't get RPC over HTTP to work

I have the following setup:
- Web site hosted by ISP with a mail.mydomain.com pointing to my internal network
- exchange 2003 on SBS2003 internally
- SSL certificate for mail.mydomain.com from godady installed on my internal SBS2003

I am trying to configure outlook to use RPC over HTTP for my mobile users.  I have set up the exchange server, IIS, and outlook as per microsoft instructions.

When I try to connect the window requesting login credentials keep poping up and the connection does not get established.  while trying ot play with it I got the certificate error and it shows that the certificate that is being presented was issued by the ISP so obviously the wrong certificate but I don't know why and how to correct it.

Answer : Can't get RPC over HTTP to work

I have found the solution.  I had to check the 'integrated windows authentication' in the RPC virtual server as per the following excellent guide:
http://blogs.techrepublic.com.com/networking/?p=292

Thanks