• Welcome page
  • How SPF, DKIM and DMARC work together / best practices
  • Basic Linux Introduction & Commands
  • SPF
  • DKIM
  • DMARC
  • Analysing email headers
  • Difference between the Mail From address and the From address and how to avoid and identify spoofed emails
  • What is DNS and the different types of DNS records
  • DMARC Identifer Alignment
  • How to configure DMARC and reading DMARC reports
  • CloudFront 4xx and 5xx errors
  • EC2 - Linux