How can I quickly validate my ActiveSync, SMTP, Autodiscover, Outlook Anywhere infrastructure from the Internet?

I just came across this very nice testing tool called the "Exchange Server Remote Connectivity Analyzer" that was created and hosted by Microsoft for customers and schools to use to validate your ActiveSync, SMTP, Autodiscover, Outlook Anywhere configurations all from single Internet web site. I needed this type of tool many times back in my consulting days.

The site is www.testexchangeconnectivity.com . It is very handy for troubleshooting or validating your infrastructure when you get a call from a professor stating his Windows Mobile phone no longer syncs, etc.

Here is the Remote Connectivity Analyzer main screen:

Here is an SMTP test sample:

 

Here is an ActiveSync test sample:

This is a very useful tool since you can quickly determine the state of your Exchange 2007 world from the outside without having to be on the outside. Note: When testing be sure to only use TEST accounts, do not use production accounts!