Re: [dnsext] MaraDNS and NXDOMAIN/NOERROR on non-terminal nodes

"Marc Lampo" <marc.lampo@eurid.eu> Wed, 27 April 2011 06:33 UTC

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From: "Marc Lampo" <marc.lampo@eurid.eu>
To: "'Edward Lewis'" <Ed.Lewis@neustar.biz>, "'Sam Trenholme'" <strenholme.usenet@gmail.com>
References: <BANLkTimgkfQFx8ocrXjv7UFjhCzenwDhKw@mail.gmail.com> <a06240800c9db17a18dfe@[10.31.200.105]>
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Date: Wed, 27 Apr 2011 08:25:59 +0200 (CEST)
X-ASG-Orig-Subj: RE: [dnsext] MaraDNS and NXDOMAIN/NOERROR on non-terminal nodes
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Cc: johnl@iecc.com, dnsext@ietf.org
Subject: Re: [dnsext] MaraDNS and NXDOMAIN/NOERROR on non-terminal nodes
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Who claims that this in fact a subdomain ?
A '.' *can* be a delegation point, but it is not obligation.
--> "www.sub" might simply be a (one) string (label ?) in the zone
"example.com",
    with no delegation (SOA/NS) at the '.'

So "sub.example.com" is another label in the same zone file;
if that label does not exist by itself, I would say "NXDOMAIN" is the
logical answer.

Kind regards,

Marc Lampo


-----Original Message-----
From: Edward Lewis [mailto:Ed.Lewis@neustar.biz] 
Sent: 25 April 2011 03:24 PM
To: Sam Trenholme
Cc: johnl@iecc.com; ed.lewis@neustar.biz; dnsext@ietf.org
Subject: Re: [dnsext] MaraDNS and NXDOMAIN/NOERROR on non-terminal nodes

At 14:11 -0500 4/23/11, Sam Trenholme wrote:

>To summarize:  Let us suppose we have the DNS name
>www.sub.example.com, but, for whatever reason, sub.example.com does
>not exist.

By definition, a domain name with subdomains exists.  If there is a 
"www.shortname", then "shortername" exists.

RFC 4592, section 2.2.3.

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