Returned mail: Data format error

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

Your account has been used to send a large amount of junk e-mail messages during this week.
Probably, your computer was compromised and now runs a trojan proxy server.

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

Sincerely yours,
lists.village.virginia.edu technical support team.