Re: Registration model, 2821bis-06

On Apr 2, 2008, at 7:11 AM, Arnt Gulbrandsen wrote:
> - if there is no MX record and no A, but there is an AAAA, then
>   the sending host MAY synthesise an MX
I think this verbiage is (IMHO) horrible. It makes an "AAAA-only" mail  
server completely unreliable, as you can never know for certain if a  
sending host will choose to talk to you or not.
That ambiguity-of-behavior is a bad idea (again, IMHO).

Cheers,
D

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