Is it possible to setu bind9 as a caching server, but for specific domains to use one zone master and for the nonspecified to use another zone master?
Inhouse there is a DNS-server, which is used for our different email-domains, and the rest is cached. That's done. But these DNS-servers use certain utilities, which we need to workaround, when trying to get the IP's for the domains out there in the world.
Another set of caching DNS-servers (bind9) that cache from our internal DNS-servers, when fetching IP's from our internal domains, but cache from another external zone master, when trying to hit the domains all over the world.
Hope it makes sence, we really need this for our server-setup.