On Sat 22/Jan/2022 16:29:34 +0100 John Levine wrote:
Ale said:
Mike said:
I have previously pointed out that there are organizations that
lease/rent or otherwise provide subdomains as part of their
commercial offerings. Your assertion is akin to claiming that
tenants in an apartment building are family relatives simply because
they have the same landlord. ...
This misses the point. It would be a good idea for a multi-tenant
domain to publish a PSD record to keep the tenants apart, just as it
would be a good idea to send a PSL pull request to keep them from
spoofing browser cookies, but I don't think it is a good idea to
depend on that. We know that at the TLD level, most TLDs won't ever
publish a PSD.
If we fear that some TLDs won't qualify their role, then it is wrong
to discourage setting psd=n for organizational domains. Setting
role=org is even more expressive, because it provides for role=sub as
well.
I agree that determining the role of each domain in the tree is an
heuristic process. The more info we can gather during the walk, the
more accurate the heuristic.
Best
Ale
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