Just wanted to chime in and get some other administrators to chime in on what features they would want in a future release of Exchange involving Dynamic Groups. Ability to select more then one OU to base the group onAbility to select and de-select recurs-ability per group specifiedAbility to see (through tool tip or some kind of report) through Outlook who the group e-mails

You can do the first two by configuring your search criteria in PowerShell. As to the third, what you see in Outlook won't necessarily be what you get because the dynamic distribution group is just that. The distribution could change between the time you look at it in Outlook and the time the message reaches the hub transport server that is expanding the list, and Outlook could well be looking to a different domain controller than the hub transport server is. You're welcome to send your thoughts to mswish@microsoft.com. Ed Crowley MVP "There are seldom good technological solutions to behavioral problems."