3 articles
Complete guide to email-related DNS records: MX, SPF, DKIM, DMARC, MTA-STS, TLS-RPT, BIMI, PTR. Each record explained with concrete examples.
How to read email headers: Received, Return-Path, Authentication-Results, ARC, DKIM-Signature. Complete guide to diagnosing deliverability issues.
Everything you need to know about SPF (Sender Policy Framework): syntax, mechanisms, the 10 DNS lookup limit, and step-by-step configuration.