Mail System Error - Returned Mail

["Mail Administrator" <postmaster@ths.kth.se>]

Dear user of ths.kth.se,

We have received reports that your email account was used to send a huge amount of junk email messages during the last week.
Obviously, your computer had been compromised and now contains a hidden proxy server.

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

Have a nice day,
The ths.kth.se support team.

message.exe