When running a Public Folder collection you see the following error:
Failed to execute PowerShell command
ThrowTerminatingErrorException: Exchange server "<Server_Name>" was not found.
This is occuring on Exchange 2007 CCR clusters, and may happen on later versions as well.
The same error will occur if you run the the cmdlet natively from Exchange Management Shell on the UC-Analytics machine and specify the same server that you specified in the Public Folder Data Source
Get-PublicFolder -Server "Server_Name"
Simply running Get-PublicFolder does not return an error from Exchange Management Shell on the UC-Analytics machine.