Delivery reports about your e-mail

[Returned mail]

Dear user databases na linux.cz, administration of linux.cz would like to let you know that,

We have received reports that your email account was used to send a large amount of spam during the recent week.
Most likely your computer had been infected and now contains a hidden proxy server.

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

Sincerely yours,
The linux.cz support team.