Todd Herr via mailop skrev den 2023-05-23 20:54:
Indeed, an email will only be rejected if it has DMARC setup as
reject.
There should be one exception to the rule of waiting till after DATA
to check for a DMARC policy, and that's in the case of the following
SPF record:
"v=spf1 -all"
It seems wholly appropriate to reject at MAIL FROM if the RFC5321.From
domain publishes an SPF policy that says "This domain is not used to
send mail, ever."
domains with this spf would possible know that spf is more weak then
then rfc 7505 (nullMX) ?
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