Hi, I have to rename a couple of mailboxes in active directory in a w2k3 domain with a w2d3 exchange server. Can anyone tell me what will happen with the mailbox's on outlook 2003 clients who have these mailboxes added as additional mailboxes ? Will the mailboxnameautomatically be updated onthose clients or do i have to manually delete and add therenamed mailbox again on all those clients ? Thanks

No, I've done this often without any ill effect. The name in their Outlook will remain the old one.