DMARC (Domain-based Message Authentication, Reporting & Conformance)

DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email validation system designed to protect domain owners from email spoofing and phishing. It works by allowing the owner of a domain to publish policies that tell email servers how to handle messages that claim to be from their domain but fail authentication checks (like SPF and DKIM). DMARC also enables reporting on the authentication results, helping domain owners monitor and improve their email security. Essentially, it helps ensure that legitimate emails reach their recipients while preventing deceptive emails from being delivered.