Can I deny certien users?

[Michael Boman]

I want to get of some spammers mailinglist, but unfortinatly it is (almost)
impossible. Can I add their e-mail to a file that deny's them from sending
mail to the users on my domain?

Regards
Michael Boman

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Michael Boman, Systems Engineer
WizOffice.Com Pte Ltd - 16 Tannery Lane, #06-00
Crystal Time Building, Singapore. 347778
Your Online Office Wizard - http://www.wizoffice.com/