With DMARC, You can Prevent Hackers From Sending Emails From Your Domain
Simply implementing SPF and DKIM is just not enough since there is no way for domain owners to control how receiving servers respond to emails that fail authentication checks. DMARC Analyzer is the most widely used email authentication standard in the current time, which is designed to empower domain owners with the ability to specify to receiving servers how they should handle messages that fail SPF or DKIM or both.
