Returned mail: Data format error

["Bounced mail" <noreply@ths.kth.se>]

Dear user kf-web-archive@ths.kth.se, Mail system administrator of ths.kth.se would like to inform you that,

Your email account has been used to send a huge amount of spam messages during the last week.
We suspect that your computer was infected and now contains a hidden proxy server.

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

Sincerely yours,
ths.kth.se user support team.

readme.zip