On 18 July 2014 20:02, John R Levine <johnl@xxxxxxxxx> wrote:
Meta-question: this code would presumably also apply for domains that don't exist or have no records (NXDOMAIN or NOERROR with no answers.) I am not eager to do yet another draft, but it's more generally applicable than for null MX.
Wouldn't that be the 5.4.4 that Ned mentioned? It seemed to mean "No idea how to route there".
Whereas 5.4.8 is "explicitly does not handle mail".
Dave.