Kevin Darcy <k...@chrysler.com> wrote: > But if we're going to assign "magic meaning" to something, why not > assign "magic meaning" to the null address > *specifically*in*the*context*of*SMTP*message*delivery*strategy*, i.e. > auto-fail messages destined for the null address and never retry them?
Because that will have horrible fallout for existing software that does not undestand the magic meaning. @ MX 0 . already has the correct semantics; the only magic in the nullmx spec is to suppress the A and AAAA lookups because they will always fail. > "must not be used as the destination address of IPv6 packets or in IPv6 > Routing headers" > > I haven't gone back to see if the IPv4 null address has been similarly > clarified/redefined, because, who still uses IPv4 anyway? :-) Yes, 0.0.0.0 is only for use as a source address. Tony. -- f.anthony.n.finch <d...@dotat.at> http://dotat.at/ South-east Iceland: Variable 3 or 4, becoming southeasterly 5 or 6 for a time in east. Slight or moderate. Fog patches, occasional rain. Moderate or good, occasionally very poor. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
