I disagree. There was considerable concern with a misuse of a mechanism and its effect on various systems. That, from discussion on the IETF mailing list I was on when it was discussed there. There was no rough consensus that I could see. On Dec 15, 2009, at 2:09 PM, Tony Finch wrote:
On Tue, 15 Dec 2009, Florian Weimer wrote:
* Eric J. Esslinger:
I found a reference to a null MX proposal, constructed so: example.com IN MX 0 .
I think this is quite controversal.
My impression from discussions on various IETF lists is that most people think it is a good idea, it is already reasonably widely implemented, but no-one has the time and persistence to push a spec through to publication.
Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS. MODERATE OR GOOD.