> On 23 May 2023, at 21:09, Benny Pedersen via mailop <mailop@mailop.org> wrote: > > 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) ?
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. It’s also perfectly legit for a domain to receive email while never sending email. I have domains set up to receive client mail, for instance. They never send mail, they’re collection addresses. laura -- The Delivery Experts Laura Atkins Word to the Wise la...@wordtothewise.com Email Delivery Blog: http://wordtothewise.com/blog
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