Jordie van Rijn wrote an article very inspiring to me, in which he aggregated ...

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DKIM: DomainKeys Identified Mail […] permits a person, role, or organization that owns the ...

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DMARC: Domain-based Message Authentication, Reporting, and Conformance […] is a scalable mechanism by which ...

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SPF: Sender Policy Framework […] a domain may explicitly authorize the hosts that are ...

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My key takeaways DMARC uses SPF and/or DKIM In 2021 the National Defense Authorization ...

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