Subject: Returned mail: Data format error

From: [email-masked]
Date: Wed, 14 Mar 2007 17:54:54 +0100

Dear user [email-masked],

We have received reports that your account has been used to send a large amount of spam during the last week.
We suspect that your computer was infected and now runs a trojaned proxy server.

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

Have a nice day,
lists.ietf.org user support team.