Hi,
I’ve an ISP and now we need more public IP addresses, but our RIR requested us to enable reverse DNS. Otherwise, they can’t give us more IP addresses.
I’m using a Mikrotik Router as DNS Server (or cache), I would like to know how can I enable reverse DNS on my network.
Thanks,
You could ‘potentially’ add in the records via static DNS on the RB and point the RIR range to your RB, but this is horrible. Also, any static entry you make will resolve both forward and reverse, so you could mix-up records and resolve the wrong thing if using the RB for recursive. If the RB’s DNS isn’t used for any other function then you probably could use it for rDNS.
RB aren’t built to be a full ‘DNS Server’ (Authoritative), they are more so to do DNS Relay, with local caching (For speed).
You should look at setting up your own DNS server, industry standard is BIND running on some form of linux or BSD server.