* Paul Vixie: >> > As for "MX 0 ." the sooner this gets defined as no SMTP service for this >> > domain the better. The cost for changing this is only every going to >> > increase. >> >> It may take years before a significant portion of SMTP servers recognize >> root domains as meaning no service. > > that would never happen. most smtp initiators including embedded ones would > never be upgraded. they'll just make ". IN A" queries trying to chase down > this MX's target.
Most embedded SMTP implementations do not perform mail routing. Those who do have got an automated software update mechanism, thanks to spam/AV filtering. "MX 0 ." is quite widely deployed as far as the DNS is concerned, so you root operators should already get the related A/AAAA traffic. Theoretically, it shouldn't increase if there are more such MX records because of the two-stage nature of the lookup. _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
