Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Tue, 12 Aug 2008 16:14:00 +0200 (CEST)

The original message was received at Tue, 12 Aug 2008 16:12:10 +0200 (CEST)
from host25.190-139-77.telecom.net.ar [190.139.77.25]

   ----- The following addresses had permanent fatal errors -----
<[email-masked]>
    (reason: 550 5.1.1 <[email-masked]>... User unknown)

   ----- Transcript of session follows -----
... while talking to poindexter.wirehub.nl.:
>>> DATA
<<< 550 5.1.1 <[email-masked]>... User unknown
550 5.1.1 <[email-masked]>... User unknown
<<< 503 5.0.0 Need RCPT (recipient)