For a user object I can run dsquery and look at the msExchHideFromAddressLists value to determine if an address is hidden from the GAL. When I run the same query for a group object, it does not have the same attribute. Is there any way to verify this value wth dsquery for a group?

Its the same, to verify you can open ADUC, find, custom search, advanced tab and enter (&(&(msExchHideFromAddressLists=TRUE)(objectClass=group))) James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

Its the same, to verify you can open ADUC, find, custom search, advanced tab and enter (&(&(msExchHideFromAddressLists=TRUE)(objectClass=group))) James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

In addition, you can also try this cmdlet Get-Mailbox | Where {$_.HiddenFromAddressListsEnabled -eq $True}. Hope helps.Noya Lau TechNet Community Support