Email has become an integral part of modern communication, both for personal and business purposes. However, with the increasing volume of spam, phishing attacks, and email fraud, ensuring the security and authenticity of email messages has become more critical than ever. To combat these challenges, organizations and email service providers have adopted various security measures, one of which is DMARC (Domain-based Message Authentication, Reporting, and Conformance). In this article, we will delve into what DMARC is, how it works, and its significance in enhancing email security.