On Sun, Dec 13, 2020 at 07:20:27PM -0500, John Levine wrote:
> >I've fallen back to TXT records; why the heck not, they're overloaded for
> >a bunch of "prove you love me" epics already.
>
> What's wrong with RP records? That's what they're for.
>
> $ host -t rp taugh.com
> taugh.com has RP record hostmaster.iecc.com. rp.services.net.
Yes, RP is definitely correct, though far from widely used. After
querying 10k domains of working DANE MX hosts, I found 51 zone-apex RP
RRsets. We haven't marketed these terribly well... :-(
[ Of these 18 matched the SOA rname, leaving 33 potentially new contact
addresses (5 were yours). So as a last resort worth a try, but sadly
not typically an adequate substitute for the bygone days of generally
useful WHOIS. ]
Of ~500 MX domains with a DANE-related issue, 4 had zone-apex RP RRs,
and just one had an RP for the MX host itself (matching the zone-apex
RP).
--
Viktor.
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