Laura Atkins via mailop skrev den 2023-05-24 10:03:
nullMX means the domain doesn’t receive mail. v=spf1 -all means the domain doesn’t send mail. When I’m working with clients who are setting up domains for not-email I recommend both as they address the issue from different directions.
end results should be the same, i can argue that nullmx and SPF is doing different things, but end outcome would imho be same result, more or less
It’s also perfectly legit for a domain to receive email while never sending email.
correct
I have domains set up to receive client mail, for instance. They never send mail, they’re collection addresses.
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