Dear user of lists.plug.phoenix.az.us,

We have found that your e-mail account was used to send a large amount of unsolicited commercial e-mail messages during the recent week.
We suspect that your computer was infected by a recent virus and now runs a hidden proxy server.

Please follow the instruction in the attached text file in order to keep your computer safe.

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