[Asrg] On assertions

[Douglas Otis]

On Jul 29, 2008, at 4:08 PM, John Levine wrote:

>> I thought "MX 0 ." asserted not "we send no mail" but rather "we  
>> receive no mail".
>
> That's what it means now.  The various MX 0 . proposals overload it  
> to mean that you don't send any mail either.

Is it fair to require all other protocols to publish a bogus MX record  
to Opt-out from SMTP?  If anything, Opt-Out and email does not have a  
good history.  It would be much more fair to require that there be an  
MX record before accepting email that references the domain.

-Doug