Exchange PowerShell Filtering Examples
Great post from giving some hints how to filter using Exchange Management Shell.
When writing Exchange PowerShell scripts it is very useful to target specific machines to either query or set their properties. Thus the ability to generate a query that effectively targets the correct machines is a very good thing to know!
Read more at source: http://blogs.technet.com/b/rmilne/archive/2014/03/24/powershell-filtering-examples.aspx