The original message was received at 2011-04-15 10:51:59 -0500
from postoffice.(null) [10.0.0.1]
----- The following addresses had permanent fatal errors -----
<andrewcburnard@gmail.com>
-----Transcript of session follows -----
... while talking to postoffice.(null).:
RCPT To:<andrewcburnard@gmail.com>
<<< 550 5.1.1 unknown or illegal alias: andrewcburnard@gmail.com
550 <andrewcburnard@gmail.com>... User unknown