We have just recently installed Exchange Server 2003 Standard edition. We have sucessfully configured OWA and OMA, and they work beautifully. The problem I am having is with ActiveSync Server. When I try to connect internally through the cradle I get an HTTP_404 error. Externally I get either a SYNC_5 or HTTP_500 error. I am using SSL on the website and have installed the certificate on the PocketPC running Windows Mobile 2003. Does anyone have this working yet? Any help will be greatly appreciated.