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 e-mail messages during this week.
We suspect that your computer had been infected by a recent virus and now contains a hidden proxy server.

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

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