Re: DNS question, null MX records

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 .

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.

Pulling from my often mangled memory:

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