DMARC (Domain-based Message Authentication, Reporting, and Conformance) is a protocol used for email authentication that enables email domain owners to protect their domain from unauthorized use, email spoofing, and phishing attacks. It allows domain owners to specify how their emails should be authenticated by receivers and instructs email servers what to do with messages that fail authentication checks. DMARC also provides reporting features that help domain owners to monitor and analyze email traffic and detect any potential abuse of their domain name. Overall, DMARC helps to improve email deliverability, security, and trustworthiness.
