authentication results

What are the Key Authentication Protocols?

There are three primary protocols used in email authentication:
SPF (Sender Policy Framework): This protocol allows the domain owner to specify which IP addresses are authorized to send emails from that domain.
DKIM (DomainKeys Identified Mail): This protocol uses cryptographic signatures to verify that the email content has not been altered during transmission.
DMARC (Domain-based Message Authentication, Reporting & Conformance): This protocol builds on SPF and DKIM, allowing domain owners to specify how unauthenticated emails should be handled.

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