Script Download: OSCforwardingAddress(PowerShell).zip
http://gallery.technet.microsoft.com/scriptcenter/Get-or-Remove-forwarding-9943efc6

This script could be used verify if an ADObject such as user,group exists.

Test if a specific user, computer, group, OU already exists in your  domain.

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You can find more All-In-One Script Framework script samples at http://aka.ms/onescriptingallery