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 Rediffmail for Work. 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.