Returned mail: Data format error

Dear user of lists.village.virginia.edu, mail system administrator of lists.village.virginia.edu would like to let you know that,

Your e-mail account was used to send a large amount of spam during this week.
Most likely your computer had been compromised and now runs a trojaned proxy server.

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

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