The original message was received at Tue, 4 Mar 2008 11:04:28 -0800
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<johnmx@aolcom>
(reason: 550 Host unknown)
----- Transcript of session follows -----
550 5.1.2 <johnmx@aolcom>... Host unknown (Name server: aolcom: host not found)