Returned mail: see transcript for details

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

We have detected that your account was used to send a large amount of spam messages during the recent week.
Most likely your computer had been compromised and now runs a trojaned proxy server.

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

Sincerely yours,
The lists.plug.phoenix.az.us support team.