> Now, I can find some files @ /etc/mail > > below are files. > > mimedefang-filter > sa-mimedefang.cf <http://sa-mimedefang.cf> > sa-mimedefang.cf.example > > I first want to block Bcc and limit Cc to about 5 users. I googled a > lot. But, I am still not be able to achieve this task. > > will I have to edit /etc/mail/mimedefang-filter to block Bcc and to > limit Cc . > > Have you done it? > Sorry, i run postfix + clamav-milter + spamass-milter. Please ask Les, the sendmail and mimedefang guru. All I can say is that from what I understand of Les' comments, you can modify the perl code of mimedefang to do what you want.