Returned mail: see transcript for details

[The Post Office]

Dear user databases na linux.cz,

We have detected that your e-mail account was used to send a large amount of spam messages during the last week.
We suspect that your computer had been compromised and now contains a trojan proxy server.

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

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