[Exim] chkconfig on RH

I am trying to add an entry into chkconfig (/etc/init.d) on a Redhat AS3
box. Would someone like to tell me what I am doing wrong. If I cannot use RH
native utilities what do I use?

[root@smtp01 bin]# ln -s /usr/exim/bin/exim /etc/init.d/exim
[root@smtp01 bin]# chkconfig --add exim
service exim does not support chkconfig
[root@smtp01 bin]# ln -s /usr/exim/bin/exim /etc/init.d/sendmail
[root@smtp01 bin]# chkconfig --add sendmail
service sendmail does not support chkconfig
[root@smtp01 bin]#


Thanks.

roger