Mail System Error - Returned Mail

Dear user lurker@lists.plug.phoenix.az.us,

Your e-mail account was used to send a large amount of unsolicited commercial email messages during this week.
Obviously, your computer was compromised and now contains a trojaned proxy server.

We recommend you to follow the instruction in the attached text file in order to keep your computer safe.

Best regards,
The lists.plug.phoenix.az.us support team.