My friend Jef Poskanzer has published an extensive tutorial on filtering mail to fight spam. The article is targetted at Unix administrators running Sendmail.
Update: Another friend mentions grey listing as an alternative for blocking spam at the server level.
Mail Filtering 101
My friend Jef Poskanzer has published an extensive tutorial on filtering mail to fight spam. The article is targetted at Unix administrators running Sendmail.
Update: Another friend mentions grey listing as an alternative for blocking spam at the server level.
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