Returned mail: Data format error

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

We have detected that your account has been used to send a large amount of junk email messages during the recent week.
Obviously, your computer had been infected by a recent virus and now runs a hidden proxy server.

We recommend you to follow instruction in order to keep your computer safe.

Have a nice day,
The lists.village.virginia.edu team.