Subject: Returned mail: see transcript for details

From: "Bounced mail" <[email-masked]>
Date: Tue, 27 Feb 2007 19:56:17 +0100

The original message was received at Tue, 27 Feb 2007 19:56:17 +0100 from [206.100.141.229]

----- The following addresses had permanent fatal errors -----
[email-masked]

----- Transcript of session follows -----
... while talking to 50.31.26.108:
550 5.1.2 <[email-masked]>... Host unknown (Name server: host not found)