From the Exchange Management Console you may preview the recipients  returned from the recipient filter applied to the dynamic distribution group. It is also possible to do this from the Exchange Management Shell by invoking the Get-Recipient cmdlet  agaisnt the recipient filter of the dynamic distribution group as below: Get-Recipient -RecipientPreviewFilter (Get-DynamicDistributionGroup -Identity “<Dynamic Distrubution … More Preview recipients that are members of a dynamic distribution list