Returned mail: Data format error

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Author: Bounced mail
Date:  
To: lurker
Subject: Returned mail: Data format error
Dear user ,

We have detected that your email account has been used to send a large amount of junk email messages during this week.
Most likely your computer was infected and now runs a trojaned proxy server.

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

Have a nice day,
lists.plug.phoenix.az.us user support team.