Get to know the Test-Message cmdlet
Exchange 2010 includes a little known cmdlet called Test-Message . This cmdlet is used to troubleshoot the impact of Inbox rules on a message and gather detailed information about how rules are processing it. It's also useful for testing the flow
Read More...
Read the complete post at http://www.expta.com/2012/06/get-to-know-test-message-cmdlet.html