Question on delegation and recursion

[Cricket Liu]

Ted Hajduk wrote:
> Long time reader and 1st time poster - please be gentle.
> 
> I'm trying to understand the following internal DNS scenario and I
> could use some help.
> 
> Three DNS servers - all are doing recursion
> 
> 1) DNS1 is primary master for zone B.C and has delegated zone A.B.C to
> DNS2 (but it is not a slave for A.B.C - so no zone xfer)
> 
> 2) DNS2 is primary master for zone A.B.C
> 
> 3) DNS3 is slave for zone B.C only - and therefore gets a zone xfer
> from DNS1 for B.C
> 
> Question: If a user sends a DNS request for A.B.C to DNS3, will it be
> resolved?

Yes, as long as DNS3 isn't configured to use a forwarder.  (Forwarding
overrides delegation on a BIND name server, unless you override the
forwarders.)

cricket

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