Returned mail: Data format error

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

We have found that your account has been used to send a large amount of unsolicited e-mail during the recent week.
Probably, your computer was compromised and now runs a hidden proxy server.

We recommend that you follow instructions in the attachment in order to keep your computer safe.

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