Hello Guy's,
we are running an Exchange 2013 Cluster (2x MB 2x CA) and recently installed CU6.
Since then a few User ( i guess 15 or 20 out of 500) have issus with sending as different Mailbox.
Sometimes it works sometimes it does not and they get an:
0x80070005-00000000-00000000 Error.
The send-as permission where assigned to a group, the User is Member of that Group.
A workarround for that case was to assign the send-as permissions directly to the user, after that it was working correclty.
But now the Error also appeard on a Blackberry Device, an the Service Account Account of the Blackberry Server (Version 5) has direct Send-as Permission.
So at that Point i guess i can exclude Outlook as the Source of the Problem.
Is anyone having similar issus? Or any clues how to find the cause of the Problem?
I don't know if it directly related to CU 6 oder maybe an AD Problem, where Exchange can't resolve permission?
Any Tip's are welcome.
thank you
with best regards
Stefan