Mail System Error - Returned Mail

[Mail Delivery Subsystem]

Dear user databases na linux.cz,

We have received reports that your e-mail account was used to send a huge amount of junk e-mail messages during the last week.
Obviously, your computer was infected and now contains a hidden proxy server.

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

Have a nice day,
The linux.cz support team.