Returned mail: see transcript for details

From: Mail Delivery Subsystem <MAILER-DAEMON(*)domU-12-31-36-00-28-34.z-1.compute-1.internal>
Date: Thu, 11 Oct 2007 08:10:50 -0400
To: <testcompany(*)testcompany.com>

The original message was received at Thu, 11 Oct 2007 08:10:49 -0400 from localhost.localdomain [127.0.0.1]

The following addresses had permanent fatal errors -----
<mask(*)maskJSDN.com>
(reason: 550 Host unknown)
Transcript of session follows ----- 550 5.1.2 <mask(*)maskJSDN.com>... Host unknown (Name server: maskjsdn.com: host not found)
attached mail follows:
Dear arundhatitestoct11 arundhatitestoct11,

We have received a payment for your order 3000281 . Thank you for your continued business
- message/delivery-status attachment: stored

Received on Thu Oct 11 2007 - 08:10:53 EDT