{"ok":true,"entity":{"id":"dmarc","name":"DMARC","entityType":"concept","officialName":"Domain-based Message Authentication, Reporting, and Conformance (DMARC)","canonicalName":"DMARC","displayName":"DMARC","category":"メール認証プロトコル（ポリシー・レポート仕様）","shortDescription":"DMARCは、DKIMとSPFの上に構築された、送信ドメインのメール認証ポリシーとレポートの仕様です。2026年5月20日にIETFのRFC Editorが3件のRFCを公開してStandards Trackとなり、RFC 9989がコアプロトコルを定め、2015年のRFC 7489は廃止（obsolete）と表示されています（2026年10月時点）。","primaryCluster":"security-standards","parentEntity":null,"verificationStatus":"draft","website":"https://dmarc.org/","updatedAt":"2026-10-22T09:45:38.845Z","secondaryClusters":[],"alias":["Domain-based Message Authentication, Reporting and Conformance"],"searchKeywords":["DMARC","ディーマーク","メール認証","なりすましメール対策","SPF DKIM","RFC 9989","RFC 7489","送信ドメイン認証","dmarc.org"]},"referenceIndex":["P-01-001","P-02-001","P-04-001","P-05-001","P-06-001"]}