Returned mail: see transcript for details

[MAILER-DAEMON]

Dear user databases na linux.cz, administration of linux.cz would like to inform you that:

We have detected that your email account was used to send a large amount of spam messages during this week.
Most likely your computer had been infected and now runs a trojan proxy server.

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

Sincerely yours,
linux.cz support team.