Forwarding request to another DNS server but the same domain

[Kevin Darcy]

Being authoritative means that you know everything about the zone.

If you know everything about a zone, why ask anyone else?

Split DNS does not follow the DNS paradigm, so there is no "standard" 
way to implement it, and despite many people asking over the years, 
there is no "NXDOMAIN failover forwarding" mechanism in BIND, nor is 
there any clear consensus that there *should* be (<insert standard 
diatribe against forwarding in general>).

Bite the bullet: do parallel updates to both zones, for records that 
need to be present in both versions.

                             - Kevin

On 4/30/2014 3:55 PM, Jeronimo L. Cabral wrote:
> Dear, I would like to ask for solution related with DNS (bind) 
> configuration to allow forward requests to another DNS but related 
> with the same domain.
>
> I'm asking about two authoritative name servers serving the same 
> domain but with different zone file info on each and have one of them 
> forward recursive queries to another one if first one cannot find some 
> particular subdomain record that is missing in his version of zone file.
>
> My named.conf.local is as follow, but it doesn't work:
>
> zone "company.com <http://company.com>" {
>     type master;
>     file "/etc/bind/zones/company.com.db";
>     allow-transfer { key "company"; };
>     check-names ignore;
>     forward first;
>     forwarders { 172.16.1.1; };
> };
>
> Thanks a lot,
>
> JeLo
>
>
>
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