Found this on the FAQ page. Hope to be of help to anyone else whose in the same boat. Will be trying it out soon.
How do I tell my cache to consult internal DNS servers? Our network has internal servers at IP addresses 10.1.2.5 and 10.1.2.6 providing information about the moon.af.mil and 10.in-addr.arpa domains.
Answer: Put
10.1.2.5
10.1.2.6
into /service/dnscache/root/servers/moon.af.mil and into /service/dnscache/root/servers/10.in-addr.arpa. Make sure that both files are readable by the DNS cache account. Restart dnscache:
svc -t /service/dnscache
dnscache will contact the internal servers for information about moon.af.mil and 10.in-addr.arpa. If the moon.af.mil servers delegate darkside.moon.af.mil to another server, dnscache will contact that server for information about darkside.moon.af.mil.