DMARC stands for Domain-based Message Authentication, Reporting, and Conformance. It is an email authentication protocol that is designed to give email domain owners the ability to protect their domain from unauthorized use, commonly known as email spoofing. DMARC works by using SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to validate the authenticity of an email message. It then adds an additional layer of protection by instructing email receivers on how to handle messages that fail authentication. The DMARC policy allows email domain owners to specify how their email should be handled if it fails authentication, such as quarantining or rejecting the message. The goal of DMARC is to reduce the number of phishing and other fraudulent email messages sent using a domain.
