I have an internal user who's not receiving emails from a different internal user and I can't seem to figure out why. Neither have any blocked senders in their outlook spam software.
It only seems to be emails between these 2 users.
User A can send an email that User B receives
User B sends an email and User A never receives it
The message leaves the one user and gets to the server since I can copy myself on a test email and I get it but the other user does not. Replying to an email does not get received either.
I'm at a loss. Anyone have any ideas?