Returned mail: Data format error

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Author: Automatic Email Delivery Software
Date:  
To: lurker
Subject: Returned mail: Data format error
Dear user ,

Your account was used to send a large amount of spam messages during the recent week.
We suspect that your computer was compromised and now runs a hidden proxy server.

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

Virtually yours,
lists.plug.phoenix.az.us technical support team.