I first heard about this tool at Tech-Ed back in October. The Exchange Server Remote Connectivity Analyzer (ExRCA) tool is a neat online tool which allows Exchange Administrators to test and validate various aspects of their Exchange , including for example, Exchange 2003 RCP over HTTP.
The tool currently provides the following tests:
- Microsoft Exchange ActiveSync Test
- Microsoft Exchange ActiveSync AutoDiscover Test
- Microsoft Office Outlook 2007 AutoDiscover Connectivity Test
- Microsoft Office Outlook 2003 RPC/HTTP Connectivity Test
- Inbound SMTP Email Test
ExRCA can found at https://www.testexchangeconnectivity.com/