hello,
when i try to send messages with my own mailbox,i get this error message as NDR:"You are not allowed to send this message because you are trying to send on behalf of another sender without
permission to do so" ????
i all checked in exchange server,everything is normal.
i add the full access permission but the problem didn't resolve.
my mailbox@ is not chached.
my exchange server and my Outlook is 2010
Any idea???