2 dns records for same server

Dwayne Hottinger dhottinger at harrisonburg.k12.va.us
Mon Aug 20 14:14:36 UTC 2012

in my case my clients are getting all dns servers.  which is what my issue
was.  glad for all the help.



On Mon, Aug 20, 2012 at 9:33 AM, <WBrown at e1b.org> wrote:

> "Lightner, Jeff" <JLightner at water.com> wrote on 08/20/2012 08:56:56 AM:
> > That is to say don't put the external servers in /etc/resolv.conf on
> > your clients - only put the internal one there.  (Or the Windows
> > equivalent setup should only see your internal DNS server.)
> Or push via DHCP as in this case.
> > I would correct the prior post not to say "EVER" but rather "not
> > directly".   Often in an internal/external configuration only the
> > "external" server queries the internet and the internal one forwards
> > requests it gets to the external one.   It doesn't matter if the
> > external server the internal DNS server is pointing to also has
> > records for the domains because the internal server would already
> > have answered for the domains it is authoritative for before trying
> > to forward.   We have internal/external setup here for one domain
> > and have no problems doing this.   (Oddly enough we also have views
> > but that's another story...)
> We're using different semantics here.  I meant that the workstation should
> only send queries to the internal server and get answers from same.  Where
> that data comes from, is not important, at least from the perspective of
> the workstation as long as it is correct.
> Put another way, packets are only exchanged between workstation and the
> internal name server.
> Also, this is only for normal operations.  Use of host/dig/nslookup
> directed at any specific DNS servers not included.
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Dwayne Hottinger
Network Administrator
Harrisonburg City Public Schools
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