Authentication Myths

I don't need DMARC if I have SPF." This section debunks the dangerous misunderstandings about authentication, explaining how SPF, DKIM, and DMARC work together, not separately, to build trust.

15 questions in this topic

Does SPF alone protect my domain? Do DKIM and DMARC improve inbox placement automatically? Can SPF and DKIM replace each other? Does DMARC break forwarding? Can I use multiple SPF records? Do I need BIMI to pass DMARC? Does BIMI guarantee better inboxing? Can you fake a DKIM pass? Does ARC fix every forwarding issue? Do authentication protocols make emails “safer” for users? Can authentication hurt deliverability if misconfigured? Do subdomains inherit root domain authentication automatically? Does SPF alignment mean the same as DKIM alignment? Can you pass SPF without adding your ESP? Does every email platform handle SPF the same way?

Questions about Authentication Myths