What does DMARC rely on to verify emails?

What does DMARC rely on to verify emails?

• A. Uses SPF and DKIM to verify emails
• B. Uses SPF only
• C. Uses DKIM only
• D. Uses SPF and DKIM to verify emails and provide reporting

Answer: (D)

DMARC verification relies on the results of SPF and DKIM, combined with alignment of the From header domain. The mail receiver checks SPF and DKIM signatures, and if at least one passes with proper alignment, DMARC passes and the domain’s policy can be applied. DMARC also defines reporting to the domain owner, sending aggregate reports about authentication results (and, if available, forensic reports about individual failures). So DMARC uses SPF and DKIM to verify emails and provide reporting.

DMARC verification relies on the results of SPF and DKIM, combined with alignment of the From header domain. The mail receiver checks SPF and DKIM signatures, and if at least one passes with proper alignment, DMARC passes and the domain’s policy can be applied. DMARC also defines reporting to the domain owner, sending aggregate reports about authentication results (and, if available, forensic reports about individual failures). So DMARC uses SPF and DKIM to verify emails and provide reporting.