DMARC or Domain-based Message Authentication, Reporting, and Conformance is an email protocol that lets the sender specify what to do with their emails, should they fail the authentication checks. With DMARC, a business can get a handle on incidences of imposture in their name by calling out on such incidences. DMARC is a paid feature on RediffmailPro. To know more about how DMARC could help your business click here or contact our sales. To know more about our infrastructure security please click here.