The original message was received at Sun, 2 Mar 2008 16:15:28 -0800
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<mustafa@onyxpower.com>
(reason: 550 <mustafa@onyxpower.com> not accepted)
----- Transcript of session follows -----
... while talking to b.mx.bcn-servers.us.:
>>> RCPT To:<mustafa@onyxpower.com>
<<< 550 <mustafa@onyxpower.com> not accepted
550 5.1.1 <mustafa@onyxpower.com>... User unknown