Addition of an MX record to a dynamically-updated zone can be accomplished
multiple ways, but I’d recommend using nsupdate.
Responding differently to “internal” versus “external” queries implies views.
But, the burning questions that need to be answered are:
1) do you need those DHCP-driven records to be present in *both* views (i.e.
internally and externally)? and
2) is the MX record you’re talking about the *apex* record of the zone (as
opposed to something underneath the apex, like smtp.example.com)?
If the answer to both of those questions is “yes”, then I think you’re in for a
bit of a challenge, since I don’t know that the DHCP server will be able to
make *parallel* updates to *multiple* views. Things are much simpler if the
zone is dynamic in one view (updated by DHCP), and static in the other.
If the MX record is something other than the apex, then this also makes things
somewhat simpler, since you can delegate that particular name as a separate
zone, static, and resolving differently internally and externally, and make the
main zone, with all of those dynamically-updated records, able to resolve the
same internally and externally (e.g. stub or slave between the views).
- Kevin
From: [email protected]
[mailto:[email protected]] On Behalf Of gnafou
Sent: Thursday, January 21, 2016 11:27 AM
To: [email protected]
Subject: Overriding a single record with dynamic-dns
Hello
I have a zone myzone.com where dynamic dns is active ( dhcp updates
continuously the dns )
I need to respond differently for MX requests such as :
MX for "internal" queries is mxinternal.myzone.com
MX for "internet" queries is mxexternal.myzone.com
I cannot find out how to setup bind to achieve this while keeping the dynamic
dns in operation
Sincerely
Fred
( i use bind 9.9.5 )
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