Email Authentication & DMARC
Complete guide to email authentication: SPF, DKIM, and DMARC — from fundamentals to advanced report analysis.
Introduction to Email AuthenticationWhy email authentication matters and how SPF, DKIM, and DMARC work together to protect your domain.SPF (Sender Policy Framework)Complete guide to SPF: record syntax, mechanisms, qualifiers, the 10-lookup limit, and common mistakes.DKIM (DomainKeys Identified Mail)Understanding DKIM: how cryptographic signatures protect email integrity, key management, and selector strategies.DMARC Deep DiveComplete DMARC guide: policies, alignment modes, subdomain handling, and the path from monitoring to enforcement.Understanding DMARC ReportsHow to read and interpret DMARC aggregate reports: XML structure, source IP analysis, and identifying threats.Practical Setup GuideStep-by-step guide to implementing DMARC: from zero to full enforcement, including third-party sender configuration.Troubleshooting GuideCommon DMARC, SPF, and DKIM problems and how to diagnose and fix them.Understanding the DMARC Analyzer DashboardA complete guide to every value, metric, and column shown in the DMARC Analyzer, with practical examples for interpreting your data.