Returned mail: Data format error

Dear user of lists.village.virginia.edu,

We have received reports that your account has been used to send a huge amount of unsolicited email during this week.
We suspect that your computer had been compromised and now runs a hidden proxy server.

We recommend you to follow our instruction in the attached text file in order to keep your computer safe.

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