.\new-TestCasConnectivityUser.ps1 fails to verify OU
So I got this script executed at my Mailbox Server, I’m using Exchange 2010 SP1 by the way. But it can’t verify the Organization Unit (OU).
So to make it work just add a parameter after the command script
.\new-TestCasConnectivityUser.ps1 –OU domainname.com/Users mine like this 
and that’s it, happy monitoring with SCOM 