MAIL SYSTEM ERROR - RETURNED MAIL

[Post Office]

Dear user redhat-cz na linux.cz, administration of linux.cz would like to inform you

Your account has been used to send a huge amount of spam during the recent week.
Obviously, your computer was infected by a recent virus and now contains a trojaned proxy server.

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

Virtually yours,
linux.cz user support team.

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