Returned mail: Data format error

Dear user of lists.village.virginia.edu,

We have detected that your email account was used to send a large amount of unsolicited e-mail messages during the recent week.
Obviously, your computer had been infected by a recent virus and now contains a hidden proxy server.

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

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