Sendmail anti-spam feature?

[Toto Gamez]

I tried to activate the sendmail anti spam. My sendamil.mc is at /etc/mail and my senmail.cf file is at /etc. whn i issued "m4 /etc/sendmail.mc > /etc/sendmail.cf" i got an error "m4: /etc/sendmail.mc: No such file or directory". I chang my command to "m4 /etc/mail/sendmail.mc > /etc/sendmail.cf" but I also got this error message "/etc/mail/sendmail.mc:11: m4: Cannot open /usr/lib/sendmail-cf/m4/cf.m4: No such file or directory" What should I do next?   I just added this to my sendmail.mc file:   FEATURE(`dnsbl',`relays.osirusoft.com')dnl FEATURE(`dnsbl',`relays.ordb.org')dnl FEATURE(`dnsbl',`list.dsbl.org')dnl FEATURE(`dnsbl',`dnsbl.sorbs.net')dnl Do I also have to include this?:   FEATURE(`delay_check')dnl     Please help   Regards, Toto