I have a user who has turned off read receipts in her mailbox. However, anytime she sends an email she gets a read receipt. I've already checked the registry key and the value is set correctly. I also created multiple hub transport rules thinking this would be the easy fix but that didn't work either. The mail profile has been recreated and so has the Windows profile. I'm now out of options. Has this problem been reported before? Is there an update that can help resolve this issue?
We're using Exchange 2013