Convert Global Groups to Universal Groups after implementing Exchange 2007
We’re in the process of implementing Exchange 2007 and we had a problem just show up even after testing in our lab environment. We were seeing emails sent to global distribution groups that were just disappearing and it was not consistent.
After digging into message tracking for a couple test emails sent to distribution groups, we discovered that the Exchange 2007 server was trying to contact our “root” domain controllers for the global catalog which is in a different domain than the Exchange 2007 server.
“… in multiple-domain environments if the membership of these groups is not replicated to global catalog servers, messages may disappear.”
“With Global groups, the group will replicate to all GC’s in the forest, but the group membership will only replicate to the local DC’s. So, if for some reason Exchange can’t contact the local GC you will see this issue.”
Since my site in Active Directory Sites and Services have both root and child domain controllers in it, I had to convert my Global Distribution Groups to Universal Groups.
“MailEnabledNonUniversalGroup: Domain Local or Global, Security or Global, Distribution Group that can receive mail, which are created in Exchange 2000/2003. It is recommended to convert any groups of this type to Universal groups to prevent member expansion problems in multi-domain environments.”
Another fix could be to bust up my Active Directory sites and put root and child DCs in separate sites to prevent Exchange 2007 from looking at non-local Global Catalogs.
It’s funny the issues that show up after starting implementation even with lab testing.
In: Uncategorized · Tagged with: Active Directory, Exchange 2007, Windows Server
