Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Sat, 4 Nov 2006 10:16:34 -0500 (EST)

The original message was received at Sat, 4 Nov 2006 10:16:28 -0500 (EST)
from 63-138-16-2.customer.static.ip.paetec.net [63.138.16.2] (may be forged)

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 <[email-masked]>: invalid address)

   ----- Transcript of session follows -----
... while talking to mx01.1and1.com.:
>>> DATA
<<< 550 <[email-masked]>: invalid address
550 5.1.1 <[email-masked]>... User unknown
<<< 554 no valid recipients