{
  "url": "/email-auth-glossary/",
  "summary": "Glossary of DMARC, SPF and DKIM terms.",
  "key_points": [
    "Defines core DMARC policy and reporting tags.",
    "Clarifies SPF concepts including flattening and PermError.",
    "Explains DKIM selectors, keys and rotation."
  ]
}