blocking a address in sendmail
 

hello all!!

I have mail server. that is sendmail with redhat9. A user hghsk@yahoo.com is sending spam's to all the user's of my mail server frequently.I want to block that user from sending mail's.How do i do that?. I know Clam av and spamassasian could do that. But for that sendmail should be compiled from source with milter support. And i am preety weak on it.Tried a several times but failed.As for anti spam spamassasian tags SPAM in the subject of the mail's.It tags this even if the mail is not spam.So i was dreaming if i could block all the email's comming from the above address.

Thanking You

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