Assuming that we run a split dns with an EXTERNAL server on the firewall,
an internal PARENT server with a forwarder statement to the firewall and
some SUBDOMAIN servers that have the real information.
When we ask the internal PARENT server about a host in a subdomain
the query fails! Due to the forwarder statement the PARENT server will
(after a look in its own database & cache) ask the EXTERNAL server and
promptly get the (wrong) answer: "no such host in this domain". He will
never ask the SUBDOMAIN servers!
Conclusion: You cannot delegate domains in a split dns setup!
Now in a really decentralized company (where you cannot make the
PARENT server secondary of all the SUBDOMAIN servers) is there a
possibility to achieve split dns *and* subdomain delegation without
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