Test External Exchange Connectivity 200X

This new Microsoft site lets you test you Exchange 200x remote connecttivity.

You can choose the following tests:

• ActiveSync Test
   This test will simulate the steps a mobile device uses to connect to an Exchange Server using Exchange ActiveSync.
• ActiveSync AutoDiscover Test
  This test will walk through the steps a Windows Mobile 6.1 device (or another AirSync licensed device) uses to connect to the AutoDiscover Service
• Outlook 2007 AutoDiscover Connectivity Test
  This test will walk through the steps Microsoft Office Outlook 2007 uses to connect to AutoDiscover
• Outlook 2003 RPC/HTTP Connectivity Test
  This test will walk through the steps Microsoft Office Outlook 2003 uses to connect via RPC/HTTP
• Inbound SMTP Email Test
  This test will walk through the steps an Internet e-mail server uses to send inbound SMTP email to your domain

https://www.testexchangeconnectivity.com/