Script Download: CountAddressCreatebyPolicy.zip
http://gallery.technet.microsoft.com/scriptcenter/Count-Email-Addresses-that-3b9e938f

This script will count the number of email addresses that created via Email Address Policy for all Mailboxes.

This script is to help Exchange Administrator get a report of the total number of email addresses that created via Email Address Policy for each Mailbox.

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