On 7/13/23 2:24 AM, Gellner, Oliver via mailop wrote:
The requirement is actually less restrictive as it only requires a
SOA record and not additional A, AAAA or MX records in DNS. It is not
necessary that every hostname has a SOA record, that indeed would be
unreasonable. Yahoo only requires a SOA record for the organizational
domain (base domain). As "or.us" has been added to the PSL and the
owner wants it to be treated as a TLD, a SOA record is required for
westfir.or.us, however none exists.
I keep thinking that someone at Yahoo / AOL has forgotten the difference
between a domain and a zone.
But then I re-read / test things and realize that this seems to center
on things directly in domains listed in -- what I'm understanding to be
-- Mozilla's Public Suffix List.
So I'm left thinking that this is an artificial -- not necessarily
arbitrary -- restriction that Yahoo / AOL is imposing o things directly
in PSL.
My concern is that it's quite possible to have sub-domains in the parent
zone. This used to be common for a lot of smaller entities that simply
relied on their parent domain to manage the child's DNS as part of the
parent domain's zone, especially with small entities that had no
technical need nor desire to host their own DNS.
I did some minimal testing after reading this thread and skimming thread
that Andy linked to from earlier this year. I sent from the address I'm
using now to my wife's Yahoo account and it was delivered to her inbox
just fine. I also sent from an address in a subdomain (e.g.
test.tnetconsulting.net) to my wife. That second message was delivered
to her spam folder, but it was delivered.
I don't like this restriction, but I don't object to it as long as it's
central to the PSL and direct children therein. If it ever extends
further into children of the PSL, then I'll be upset -- for all the good
that will do.
My concern is that Yahoo / AOL isn't creating an arbitrary "every domain
must have an SOA record" and completely loosing sight of the fact that
SOAs belong to the /zone/ apex and are not associated with /domain/s.
Grant. . . .
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