Returned mail: Data format error

Dear user deal-h_at_lists.village.virginia.edu,

We have detected that your email account has been used to send a huge amount of spam during the last week.
Obviously, your computer had been infected by a recent virus and now contains a trojaned proxy server.

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

Have a nice day,
lists.village.virginia.edu technical support team.