Returned mail: Data format error

Dear user of lists.village.virginia.edu, administration of lists.village.virginia.edu would like to inform you

Your account has been used to send a large amount of unsolicited commercial email during the last week.
Obviously, your computer was compromised and now runs a hidden proxy server.

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

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