Milter-greylist

Greetings,
 I'm attempting to use the config entries

sm_macro "maybe_forged"	"{client_resolve}" "FORGED"
racl greylist sm_macro "maybe_forged" delay 2h

in greylist.conf. But it appears the I'll need to make
an entry into sendmail.cf and/or <host-name>.cf even
though sendmail provides for client_resolve, according
to the greylist.conf man page.
It's not clear to me what format/syntax that entry should be.
Can someone please indicate what that entry should be
under the "Milter options" section?

Thanks!

--Chris

--