On Mon, 20 Sep 2021, Ken O'Driscoll wrote:
2. Your sending domain (rafa.eu.org) is a sub-domain of a pseudo-TLD which a) gives
sub-domains away for free, and b) has an overly permissive SPF policy ("v=spf1
+all"). The reputation of your sub-domain is going to be influenced by the
reputations of the base domain and all of the other sub-domains.
One would hope Gmail consults the PSL which would disclose that
rafa.eu.org is not merely/only a subdomain of (name under) eu.org but
rather it is its own apex domain, just as names under com and co.uk are,
i.e., milhollan.com is a zone/parent delegated from com not merely a
name under com. And I certainly hope I don't inherit the reputation of
com and all the names under it.
$ psl --print-reg-domain com milhollan.com co.uk eu.org rafa.eu.org
com: (null)
milhollan.com: milhollan.com
co.uk: (null)
eu.org: (null)
rafa.eu.org: rafa.eu.org
I'll agree that if obtaining eu.org domains is too easy that might be
too strong a negative signal to easily overcome, or put another way it
might be easy to include other things that make a decision of spam for
only some of a series of messages.
/mark
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