DMARC
Domain-based Message Authentication, Reporting & Conformance (DMARC) is a policy for emails where both the
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checks failed.- If the SPF policy for the sender domain is set and matches the IP address of the sending email server, DMARC does nothing.
- If the email has a valid DKIM signature for the sender's domain, DMARC does nothing.
- If both checks against the sender's domain name fail, then DMARC policy is applied. If the policy is "reject", the The fallback content to display on prerenderingserver rejects the email without further processing.