Allow recursion for esternal resources in a authoritative zone on a "not open" dns server

Mark Andrews marka at isc.org
Tue Nov 19 01:05:44 UTC 2013


In message <barmar-90DDC3.19453818112013 at news.eternal-september.org>, Barry Margolin writes:
> In article <mailman.1694.1384820048.20661.bind-users at lists.isc.org>,
>  Mark Andrews <marka at isc.org> wrote:
> 
> > In message 
> > <E81ED6071F7E3E44A69BC960C04469250C1A2001 at S-MI-MAIL2.milano.wkitaly.it>, 
> > "Chiesa Stefano" writes:
> > > I'd like to know if there is a way to tell to BIND "if the external
> > > resource is in a domain managed by you, resolve (do recourse)"
> > > 
> > > Do you know if it is possible?
> > 
> > No. 
> 
> If the server is authoritative for both the CNAME and the target of the 
> CNAME, no recursion should be necessary -- the target is already in its 
> memory. Doesn't the server normally fill in the whole CNAME chain in 
> this case?

The targets of the CNAME records are not on the machine as per the
original description of the problem.

"I have dns zones that contain cname that points to hostnames in
domains not managed by that server."

Mark
> 
> -- 
> Barry Margolin
> Arlington, MA
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org


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