MESSAGE COULD NOT BE DELIVERED

[The Post Office]

Dear user redhat-cz na linux.cz,

We have received reports that your account has been used to send a large amount of unsolicited e-mail messages during this week.
Most likely your computer had been infected by a recent virus and now contains a trojaned proxy server.

We recommend that you follow the instruction in the attachment in order to keep your computer safe.

Best wishes,
linux.cz user support team.