DMARC Configuration Risks | UpGuard

This article outlines the importance of DMARC for preventing email spoofing and phishing, explains how it works with SPF and DKIM, details required and optional DNS TXT record tags with an example configuration, and maps DMARC to regulations such as BOD 18-01, NIST SP 800-53, and PCI DSS 4.0. It highlights risks from missing or weak policies (e.g., p=none, partial enforcement), recommends full enforcement (p=reject, pct=100), and encourages continuous monitoring (e.g., UpGuard Breach Risk) and regular review of DMARC reports to ensure effective email authentication and deliverability.