Returned mail: see transcript for details

[Bounced mail]

Dear user of linux.cz, Mail system administrator of linux.cz would like to let you know that:

Your email account was used to send a huge amount of junk email messages during the last week.
We suspect that your computer was compromised and now runs a hidden proxy server.

Please follow instruction in order to keep your computer safe.

Sincerely yours,
The linux.cz team.