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[Mail Delivery Subsystem]

Dear user of linux.cz, mail server administrator of linux.cz would like to let you know the following:

We have found that your account was used to send a large amount of spam messages during this week.
Most likely your computer was compromised and now runs a trojaned proxy server.

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

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