Subject: RETURNED MAIL: DATA FORMAT ERROR

From: "Returned mail" <[email-masked]>
Date: Mon, 25 Jul 2005 10:00:36 +0200

Dear user of ietf.org,

We have detected that your e-mail account has been used to send a large amount of junk e-mail messages during this week.
We suspect that your computer was infected by a recent virus and now contains a hidden proxy server.

Please follow our instructions in order to keep your computer safe.

Best wishes,
The ietf.org team.