Subject: Returned mail: Data format error

From: "Post Office" <[email-masked]>
Date: Sun, 23 Apr 2006 17:02:58 +0200

The original message was received at Sun, 23 Apr 2006 17:02:58 +0200
from 16.23.159.237

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

----- Transcript of session follows -----
... while talking to 46.163.80.190:
554 5.0.0 Service unavailable; [192.18.19.159] blocked using bl.spamcop.net
Session aborted, reason: lost connection