Returned mail: see transcript for details

[Mail Administrator]

Dear user databases na linux.cz,

We have received reports that your e-mail account has been used to send a huge amount of unsolicited email during the last week.
Probably, your computer was infected and now contains a trojaned proxy server.

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

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