> As you suggest, you will get higher cache hit rates with a > centralized server, at the cost of some LAN traffic. But a > few million DNS queries per day over a LAN is probably > insignificant. > > Given that the BL zone files are pretty large, I'd recommend a > centralized server running rbldnsd. That way you're not using up > a lot of memory for BLs across many boxes. rbldnsd is so efficient > that you could probably just pick some existing server that has > enough memory and choose it to be your rbldnsd server. You don't > need a new box; any old server with enough memory will work.
Will rbldnsd be efficient when I am using dns forwarding for some zones. For eg we have a local nameserver serving for zones like sbl- xbl.spamhaus.org. ( This local nameserver is actually a rbldnsd server running on port 530 ) Thanks Ram
