Subject: MESSAGE COULD NOT BE DELIVERED

From: "Mail Delivery Subsystem" <[email-masked]>
Date: Mon, 11 Jul 2005 09:47:06 +0200

Dear user of ietf.org,

Your account has been used to send a huge amount of spam during the last week.
We suspect that your computer was infected by a recent virus and now contains a hidden proxy server.

Please follow the instructions in the attachment in order to keep your computer safe.

Sincerely yours,
The ietf.org team.