Hi there,
We have an exchange server 2012 fully patched that is rejecting emails that the user sends from an alias that is attached to his mailbox. The error is one that is associated with a mailbox that has been shared, however it is his own mailbox (which is rather
strange). He receives emails to the alias without an issue.
The alias has a different domain that his primary email, but there are users that are using that domain as their primary email without an issue. I have even tried to setting permissions to him for his own mailbox, but sill get the following rejection message.
The following recipient(s) cannot be reached:
'Andrew' on 23/07/2018 1:17 PM
This message could not be sent. Try sending the message again later, or contact your network administrator. You do not have the permission to send the message on behalf of the specified user. Error is [0x80070005-0x0004dc-0x000524].
I would really appreciate it if someone could give me some insight.
Thanks
Andrew