Best Way Blocking Spams

[Murat USTUNTAS]

   Hello,
   I just want to write on stoping / bloking spams ? I have tried to
   install spammassasin and bogofiler to block the spams. I assume that I
   am in wrong way to installation? How can I find the correct
   installation steps to install spammassasin on FreeBSD with sendmail
   for using system widely? Or any comments to fight the spams.
   What about your solutions ? I will not change my mail server
   (sendmail) to other one (postfix/qmail) because of migration problems.
   I have about 2500 mail user on my system.
   Regards
   Murat Ustuntas
   mustuntas at bimel.com.tr