The point of being authoritative is to have a full copy of the zone, so
that one is basically autonomous, not dependent on anyone else to
resolve names in the zone. In BIND terms, that means "type master" or
"type slave". That's why authoritative zones "override" forwarding,
since forwarding is a relationship of dependency. One can't be
autonomous and dependent, for the same zone, at the same time.
A slave nameserver is, of course, "dependent", in a sense, on getting
the latest version of the zone from its master(s). But that's not a
real-time dependency, since it can always (providing that it hasn't been
so long that the zone has expired) answer queries from the latest
version of the zone it happens to possess.
- Kevin
On 6/3/2013 3:36 PM, Ward, Mike S wrote:
Hello all, I was trying to follow the thread on the NXDOMAIN and got lost. :) I
have a question about using forwarders. If the DNS that is using forwarders
receives a query for a zone it's not authoritative for even if it's in the same
network, does it go to the forwarders for zone information? I'm trying to get
my head around what was discussed in the NXDOMAIN thread. What makes a DNS
authoritative for a zone?
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