we have a user and he has 2 SMTP addresses. He receives internal email without any problem on both addresses. But wehn it comes to email from external domains he can get them when sent to the secondary smtp address but when it comes to the primary smtp the sender gets an NDR "mailbox unavailbale"
I have tried to recreate the first SMTP address but it didnt do the trick.
Is there anything else i can do before i tell the user to change his email address ?? (just kidding...)
and P.S because this user belongs to the category of the "obnoxious users" a quick repsonse would be appreciated.