PCI DSS DMARC Requirement: What Section 5.4.1 Requires

This article provides a detailed guide to understanding the PCI DSS email authentication requirement, specifically Section 5.4.1, which mandates automated anti-phishing mechanisms. It explains the difference between the binding requirement text and the Guidance column, and how DMARC, SPF, and DKIM are named as examples in the Guidance column but not as required technologies.