Exchange Server 2010 on Windows 2008 R2
I have a user who has permission to send as her boss. Her name is in three places, 1. Full Access Permission, 2. Send As Permission, 3. Mail Flow -- > Delivery Options --> Send on Behalf. She can view his mailbox. When she tries to send it bounces back. She had the same issue last week. I removed all permissions and readded all permissions back one by one and it finally worked when I added her to Send On Behalf in Delivery Options. The problem came back. I can do what I did last time but how do I know it won't come back?
Much Appreciated EE'ers!