The original message was received at Sat, 30 May 2009 21:38:43 -0700
from lb.z57.com [209.75.14.120]
----- The following addresses had permanent fatal errors -----
<slk37@gmail.com>
(reason: 550-5.1.1 The email account that you tried to reach does not exist. Please try)
----- Transcript of session follows -----
... while talking to gmail-smtp-in.l.google.com.:
>>> DATA
<<< 550-5.1.1 The email account that you tried to reach does not exist. Please try
<<< 550-5.1.1 double-checking the recipient's email address for typos or
<<< 550-5.1.1 unnecessary spaces. Learn more at
<<< 550 5.1.1 http://mail.google.com/support/bin/answer.py?answer=6596 41si2393767pxi.46
550 5.1.1 <slk37@gmail.com>... User unknown
<<< 451 4.5.0 SMTP protocol violation, see RFC 2821 41si2393767pxi.46