[exim] Only Local Mail

I am using Exim 4.62 on an XServe G5 Cluster Node, OS 10.4.6 Server. I have 2 email addresses that I would like only local addresses to be able to send mail to. Does anyone know how I would accomplish this?

Regards, Jess Mooers
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Landmann InterActive
1423 S. Park St., Madison, WI 53715
W 608-257-1558
www.landmanninteractive.com