Neat tool that'll come in pretty handy.

https://testconnectivity.microsoft.com/?tabid=client

Use IE to download/run or make sure to install appropriate pre-requisites if using other browsers.

Checkout sample images:
Yes my machine is having DNS issues, nothing to see here.
 
 
Looks like Microsoft released Exchange 2010 Service Pack 2 Roll Up 5 Version 2 to be automatically downloaded and installed with the rest of the updates with Windows Update.

This might not be desirable in your change-controlled enterprise environment, so use caution when approving Windows Updates.

Download the SP2 Roll-up 5 v2 (KB2785908) here: http://www.microsoft.com/en-us/download/details.aspx?id=36017