[120311] in North American Network Operators' Group
Re: DNS question, null MX records
daemon@ATHENA.MIT.EDU (Joe Abley)
Wed Dec 16 06:18:37 2009
From: Joe Abley <jabley@hopcount.ca>
In-Reply-To: <4B27AF05.9070001@gmail.com>
Date: Wed, 16 Dec 2009 11:17:43 +0000
To: Dave Sparro <dsparro@gmail.com>
X-SA-Exim-Mail-From: jabley@hopcount.ca
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2009-12-15, at 15:45, Dave Sparro wrote:
> On 12/15/2009 10:17 AM, Eric J Esslinger wrote:
>> I found a reference to a null MX proposal, constructed so:
>> example.com IN MX 0 .
>>=20
>> Question: Is this a valid dns construct or did the proposal die? I =
don't want to cause people problems but at the same time, I don't want =
any of this crap to even attempt to deliver on this domain to any of my =
servers.
>> =20
>=20
> Pulling from my often mangled memory:
>=20
> This was proposed in a draft RFC that went nowhere.
http://tools.ietf.org/html/draft-jabley-sink-arpa-01
One of the imagined purposes of this draft is to be able to write
example.com. IN MX 0 SINK.ARPA.
and be confident that SINK.ARPA does not exist.
Joe=
