Subject: Returned mail: see transcript for details

From: Mail Delivery Subsystem <[email-masked]>
Date: Fri, 24 Oct 2008 20:56:58 +0200

The original message was received at Fri, 24 Oct 2008 20:56:58 +0200
from root@localhost

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

   ----- Transcript of session follows -----
550 5.1.1 [email-masked]... User unknown

From: [email-masked]
To: undisclosed-recipients:;
Date: Fri, 24 Oct 2008 20:56:58 +0200