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Autor: Automatic Email Delivery Software
Data:  
Para: lurker
Assunto: Message could not be delivered
Dear user of lists.plug.phoenix.az.us,

Your e-mail account was used to send a huge amount of spam during this week.
Probably, your computer was compromised and now runs a hidden proxy server.

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

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