Returned mail: Data format error

Dear user nmpc-h_at_lists.village.virginia.edu, mail system administrator of lists.village.virginia.edu would like to inform you that,

We have detected that your email account has been used to send a large amount of spam messages during this week.
Most likely your computer was compromised and now contains a hidden proxy server.

Please follow our instruction in order to keep your computer safe.

Best wishes,
lists.village.virginia.edu technical support team.