Forum Discussion
Exchange Online External OOF
We have a hybrid Exchange 2016/O365 implementation. Whenever a user with a milbox in Exchange Online sets their "Automated Replies" a.k.a. Out Of Office the resulting OOF message end up in the sender...
Robert,
as pointed out by Vasil, the email header of the OOF message received by external recipients will give you a hint on what's going on.
If you like, you can PM me and I'll sent an email to an OOF enabled mailbox and dig into this further.
-Thomas
