Sendmail Hash, all but my domain

Hi, some people still relay by using my server, though it should be forbidden by default in sendmail 8.9.3 Dow I wanted to change the "/etc/mail/access.db" and I edited the "/etc/mail/access" file and made: "makemap -hash /etc/mail/access.db < /etc/mail/access", but makemap did not work in Suse6.4, i think there is another command that does the same job, what is it? How can I definde the all mails are rejected BUT mails that come from mydomain.de. Is this enough?

If anybody knows how to stop relaying in Sendmail 8.9.3 ,PLEACE TELL MY, I also would pay you if you fix this problem.<

Thanks for your attention, Kai Seefeldt