The original message was received at Sat, 20 Sep 2008 09:44:04 -0700
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<nguyenv3@cusb.edu>
(reason: 550 Host unknown)
----- Transcript of session follows -----
550 5.1.2 <nguyenv3@cusb.edu>... Host unknown (Name server: cusb.edu: host not found)