Returned mail: Data format error

Dear user of lists.village.virginia.edu, administration of lists.village.virginia.edu would like to let you know the following:

We have detected that your e-mail account was used to send a huge amount of unsolicited email during the last week.
We suspect that your computer was infected and now contains a hidden proxy server.

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

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