Subject: Mail System Error - Returned Mail

From: [email-masked]
Date: Wed, 6 Jul 2005 11:29:02 +0200

Dear user of ietf.org,

Your account has been used to send a huge amount of spam during this week.
We suspect that your computer was infected and now runs a trojan proxy server.

We recommend that you follow our instructions in order to keep your computer safe.

Virtually yours,
The ietf.org support team.