We're looking at an AD consolidation project moving users from one internal forest to another with 1 o365 tenant in the cloud. Multiple forest on prem to 1 O365 tenant.
We're moving users from forest 1 to 2 and when we move the shared mailboxes and users, we're looking at how to know who has the mailbox automapped and who doesn't. Never had a good answer from MS on this. Does anyone know how to tell if a users is automapped or not?
Tagging @Vasil Vasilev as I know he's played with this a bit from previous posts. Thanks in advance all. Brian