{"id":12411,"date":"2025-11-17T14:21:43","date_gmt":"2025-11-17T05:21:43","guid":{"rendered":"https:\/\/rakkoserver.com\/plus\/?p=11626"},"modified":"2025-11-17T14:21:43","modified_gmt":"2025-11-17T05:21:43","slug":"tool-dmarc-check","status":"publish","type":"post","link":"https:\/\/rakkokeyword.com\/techo\/tool-dmarc-check\/","title":{"rendered":"DMARC\u30ec\u30b3\u30fc\u30c9\u78ba\u8a8d\u30fb\u691c\u8a3c\u30c4\u30fc\u30eb"},"content":{"rendered":"\n<!-- DMARC\u30ec\u30b3\u30fc\u30c9\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb -->\n<div id=\"dmarc-record-tool\">\n  <style>\n    #dmarc-record-tool {\n      border: none;\n      padding: 0;\n      margin: 0;\n      font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", sans-serif;\n      color: #111;\n    }\n\n    #dmarc-record-tool * {\n      box-sizing: border-box;\n    }\n\n    #dmarc-record-tool .dmt-container-inner {\n      max-width: 700px;\n    }\n\n    #dmarc-record-tool p.dmt-title {\n      font-size: 20px;\n      font-weight: 600;\n      margin: 0 0 12px 0;\n    }\n\n    #dmarc-record-tool p.dmt-description {\n      font-size: 13px;\n      color: #555;\n      margin: 0 0 16px 0;\n      line-height: 1.5;\n    }\n\n    #dmarc-record-tool .dmt-form-row {\n      display: flex;\n      flex-direction: column;\n      margin-bottom: 12px;\n    }\n\n    #dmarc-record-tool .dmt-label {\n      font-size: 13px;\n      margin-bottom: 4px;\n    }\n\n    #dmarc-record-tool .dmt-label span.dmt-required {\n      color: #c00;\n      font-size: 11px;\n      margin-left: 4px;\n    }\n\n    #dmarc-record-tool input[type=\"text\"] {\n      width: 100%;\n      font-size: 14px;\n      padding: 8px 10px;\n      border-radius: 4px;\n      border: 1px solid #ccc;\n      outline: none;\n    }\n\n    #dmarc-record-tool input[type=\"text\"]:focus {\n      border-color: #007cba;\n      box-shadow: 0 0 0 1px #007cba1a;\n    }\n\n    #dmarc-record-tool .dmt-input-hint {\n      font-size: 11px;\n      color: #777;\n      margin-top: 3px;\n    }\n\n    #dmarc-record-tool .dmt-actions {\n      margin-top: 8px;\n      display: flex;\n      align-items: center;\n      gap: 8px;\n    }\n\n    #dmarc-record-tool button.dmt-submit {\n      appearance: none;\n      border: none;\n      cursor: pointer;\n      font-size: 14px;\n      font-weight: 500;\n      padding: 8px 18px;\n      border-radius: 4px;\n      background-color: #007cba;\n      color: #fff;\n      white-space: nowrap;\n    }\n\n    #dmarc-record-tool button.dmt-submit:disabled {\n      opacity: 0.6;\n      cursor: default;\n    }\n\n    #dmarc-record-tool .dmt-loading {\n      font-size: 13px;\n      color: #555;\n    }\n\n    #dmarc-record-tool .dmt-message {\n      margin-top: 10px;\n      font-size: 13px;\n      line-height: 1.6;\n    }\n\n    #dmarc-record-tool .dmt-message-error {\n      color: #b00020;\n    }\n\n    #dmarc-record-tool .dmt-message-success {\n      color: #111;\n    }\n\n    #dmarc-record-tool .dmt-result {\n      margin-top: 16px;\n      border-radius: 6px;\n      background-color: #fafafa;\n      padding: 12px 12px 10px 12px;\n    }\n\n    #dmarc-record-tool .dmt-result-header {\n      margin-bottom: 8px;\n    }\n\n    #dmarc-record-tool .dmt-result-summary {\n      font-size: 15px;\n      font-weight: 600;\n      margin: 0 0 6px 0;\n    }\n\n    #dmarc-record-tool .dmt-result-meta {\n      font-size: 12px;\n      color: #555;\n      margin: 0 0 4px 0;\n    }\n\n    \/* CTA\u30e9\u30c3\u30d1\u30fc *\/\n    #dmarc-record-tool .dmt-cta-wrapper {\n      display: none !important;\n      margin-left: 8px !important;\n      vertical-align: middle !important;\n    }\n\n    #dmarc-record-tool .dmt-cta-wrapper.dmt-cta-wrapper--show {\n      display: inline-block !important;\n    }\n\n    \/* CTA\u30e9\u30d9\u30eb(\u30aa\u30ec\u30f3\u30b8\u30fb\u30dc\u30bf\u30f3\u5185\u306e\u5de6\u5074) *\/\n    #dmarc-record-tool .dmt-cta-label {\n      display: inline-block !important;\n      padding: 1px 4px !important;\n      background: #ff6b35 !important;\n      color: #fff !important;\n      font-size: 9px !important;\n      font-weight: 600 !important;\n      border-radius: 2px !important;\n      white-space: nowrap !important;\n      margin-right: 6px !important;\n      vertical-align: middle !important;\n    }\n\n    \/* CTA\u30dc\u30bf\u30f3(\u5c0f\u3055\u3081\u30fb\u30a4\u30f3\u30e9\u30a4\u30f3\u30fb\u9ed2) *\/\n    #dmarc-record-tool .dmt-cta-btn {\n      display: inline-block !important;\n      padding: 4px 10px !important;\n      background: #333 !important;\n      color: #fff !important;\n      font-size: 11px !important;\n      font-weight: 500 !important;\n      text-decoration: none !important;\n      border-radius: 3px !important;\n      white-space: nowrap !important;\n      transition: all 0.2s ease !important;\n    }\n\n    #dmarc-record-tool .dmt-cta-btn:hover {\n      background: #555 !important;\n    }\n\n    #dmarc-record-tool .dmt-cta-domain {\n      font-weight: 700 !important;\n    }\n\n    #dmarc-record-tool .dmt-section-title {\n      font-size: 13px;\n      font-weight: 600;\n      margin: 8px 0 4px 0;\n    }\n\n    #dmarc-record-tool .dmt-raw-record {\n      font-family: SFMono-Regular, Menlo, Monaco, Consolas, \"Liberation Mono\", \"Courier New\", monospace;\n      font-size: 12px;\n      background-color: #f0f0f0;\n      padding: 8px;\n      border-radius: 4px;\n      white-space: pre-wrap;\n      word-break: break-all;\n      margin: 0 0 6px 0;\n    }\n\n    #dmarc-record-tool .dmt-parsed-table {\n      width: 100%;\n      border-collapse: collapse;\n      font-size: 12px;\n      margin-top: 4px;\n    }\n\n    #dmarc-record-tool .dmt-parsed-table th,\n    #dmarc-record-tool .dmt-parsed-table td {\n      text-align: left;\n      padding: 4px 4px;\n      border-bottom: 1px solid #e0e0e0;\n      vertical-align: top;\n    }\n\n    #dmarc-record-tool .dmt-parsed-table th {\n      width: 130px;\n      font-weight: 600;\n      color: #333;\n    }\n\n    #dmarc-record-tool .dmt-parsed-table td.dmt-param-empty {\n      color: #999;\n    }\n\n    #dmarc-record-tool .dmt-muted {\n      color: #666;\n    }\n\n    @media (max-width: 480px) {\n      #dmarc-record-tool .dmt-container-inner {\n        max-width: 100%;\n      }\n\n      #dmarc-record-tool button.dmt-submit {\n        width: 100%;\n        text-align: center;\n        justify-content: center;\n      }\n\n      #dmarc-record-tool .dmt-actions {\n        flex-direction: column;\n        align-items: flex-start;\n      }\n\n      #dmarc-record-tool .dmt-cta-wrapper {\n        display: block !important;\n        margin-left: 0 !important;\n        margin-top: 6px !important;\n      }\n\n      #dmarc-record-tool .dmt-cta-wrapper.dmt-cta-wrapper--show {\n        display: block !important;\n      }\n\n      #dmarc-record-tool .dmt-cta-btn {\n        white-space: normal !important;\n        max-width: 100% !important;\n        word-break: break-word !important;\n        display: inline-block !important;\n      }\n\n      #dmarc-record-tool .dmt-cta-label {\n        display: inline-block !important;\n      }\n\n      #dmarc-record-tool .dmt-result-meta {\n        line-height: 1.6;\n      }\n    }\n  <\/style>\n\n  <div class=\"dmt-container-inner\">\n    <p class=\"dmt-description\">\n      \u30c9\u30e1\u30a4\u30f3\u540d\u3068\u4f7f\u7528\u3059\u308bDNS\u30b5\u30fc\u30d0\u30fc\u3092\u5165\u529b\u3057\u3066\u300c\u78ba\u8a8d\u3059\u308b\u300d\u3092\u62bc\u3059\u3068\u3001DMARC\u30ec\u30b3\u30fc\u30c9(_dmarc.\u30c9\u30e1\u30a4\u30f3 \u306eTXT\u30ec\u30b3\u30fc\u30c9)\u3092\u53d6\u5f97\u3057\u3001\u751f\u30c7\u30fc\u30bf\u3068\u30d1\u30fc\u30b9\u6e08\u307f\u306e\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8868\u793a\u3057\u307e\u3059\u3002\n    <\/p>\n\n    <form id=\"dmarc-record-form\" autocomplete=\"off\">\n      <div class=\"dmt-form-row\">\n        <label class=\"dmt-label\" for=\"dmt-domain\">\n          \u30c9\u30e1\u30a4\u30f3\u540d\n          <span class=\"dmt-required\">\u5fc5\u9808<\/span>\n        <\/label>\n        <input id=\"dmt-domain\" type=\"text\" inputmode=\"url\" placeholder=\"\u4f8b)example.com\" required>\n        <p class=\"dmt-input-hint\">\n          DMARC\u30ec\u30b3\u30fc\u30c9\u306f\u300c_dmarc.\u30c9\u30e1\u30a4\u30f3\u540d\u300d\u306b\u5bfe\u3057\u3066\u554f\u3044\u5408\u308f\u305b\u307e\u3059\u3002\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067\u306f\u306a\u304f\u3001\u57fa\u672c\u7684\u306b\u306f\u7d44\u7e54\u30c9\u30e1\u30a4\u30f3\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002\n        <\/p>\n      <\/div>\n\n      <div class=\"dmt-form-row\">\n        <label class=\"dmt-label\" for=\"dmt-dns-server\">\n          DNS\u30b5\u30fc\u30d0\u30fc\n        <\/label>\n        <input id=\"dmt-dns-server\" type=\"text\" inputmode=\"numeric\" placeholder=\"8.8.8.8\" value=\"8.8.8.8\">\n        <p class=\"dmt-input-hint\">\n          IPv4\u30a2\u30c9\u30ec\u30b9\u5f62\u5f0f\u3067\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044(\u4f8b:8.8.8.8 \/ 1.1.1.1)\u3002\u672a\u5165\u529b\u306e\u5834\u5408\u306f\u300c8.8.8.8\u300d\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\n        <\/p>\n      <\/div>\n\n      <div class=\"dmt-actions\">\n        <button type=\"submit\" class=\"dmt-submit\" id=\"dmt-submit-btn\">\n          \u78ba\u8a8d\u3059\u308b\n        <\/button>\n        <p class=\"dmt-loading\" id=\"dmt-loading\" style=\"display:none;\">\n          \u691c\u7d22\u4e2d\u3067\u3059\u2026\n        <\/p>\n      <\/div>\n\n      <p class=\"dmt-message\" id=\"dmt-message\" aria-live=\"polite\"><\/p>\n    <\/form>\n\n    <div class=\"dmt-result\" id=\"dmt-result\" style=\"display:none;\" aria-live=\"polite\">\n      <div class=\"dmt-result-header\">\n        <p class=\"dmt-result-summary\" id=\"dmt-result-summary\"><\/p>\n        <p class=\"dmt-result-meta\">\n          <span id=\"dmt-result-domain\"><\/span><span class=\"dmt-cta-wrapper\" id=\"dmt-cta-wrapper\"><a id=\"dmt-cta-link\" class=\"dmt-cta-btn\" href=\"\/techo\/\" target=\"_blank\" rel=\"noopener\"><span class=\"dmt-cta-label\">\u304a\u3059\u3059\u3081<\/span><span class=\"dmt-cta-domain\" id=\"dmt-cta-domain\"><\/span>\u306e\u691c\u7d22\u6d41\u5165\u6570 \/ SEO\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u8abf\u3079\u308b<\/a><\/span>\n        <\/p>\n        <p class=\"dmt-result-meta\" id=\"dmt-result-dns\"><\/p>\n        <p class=\"dmt-result-meta\" id=\"dmt-result-query\"><\/p>\n      <\/div>\n\n      <p class=\"dmt-section-title\">DMARC\u30ec\u30b3\u30fc\u30c9(\u751f\u30c7\u30fc\u30bf)<\/p>\n      <pre class=\"dmt-raw-record\" id=\"dmt-raw-record\"><\/pre>\n\n      <p class=\"dmt-section-title\">\u30d1\u30fc\u30b9\u6e08\u307f\u30d1\u30e9\u30e1\u30fc\u30bf<\/p>\n      <table class=\"dmt-parsed-table\">\n        <tbody>\n          <tr>\n            <th>Version (v)<\/th>\n            <td id=\"dmt-param-v\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n          <tr>\n            <th>Policy (p)<\/th>\n            <td id=\"dmt-param-p\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n          <tr>\n            <th>Subdomain Policy (sp)<\/th>\n            <td id=\"dmt-param-sp\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n          <tr>\n            <th>Aggregate Reports (rua)<\/th>\n            <td id=\"dmt-param-rua\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n          <tr>\n            <th>Forensic Reports (ruf)<\/th>\n            <td id=\"dmt-param-ruf\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n          <tr>\n            <th>\u305d\u306e\u4ed6\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n            <td id=\"dmt-param-other\" class=\"dmt-param-empty\">\u2014<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n  <\/div>\n<\/div>\n<!-- DMARC\u30ec\u30b3\u30fc\u30c9\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb - JavaScript -->\n<script>\n\n<\/script>\n\n\n\n<!-- \u5171\u901aCSS\uff081\u56de\u3060\u3051\u8aad\u307f\u8fbc\u3081\u3070OK\uff09 -->\n<style>\n  .rs-related-tools {\n    background: transparent;\n    color: #000;\n    padding: 10px 0;\n    font-size: 14px;\n    line-height: 1.6;\n    display: flex;\n    flex-wrap: wrap;\n    gap: 8px 12px;\n    align-items: center;\n    margin: 16px 0;\n  }\n  .rs-related-tools__label {\n    border: 1px solid #000;\n    padding: 2px 6px;\n    border-radius: 4px;\n    font-weight: 600;\n    white-space: nowrap;\n  }\n  .rs-related-tools a {\n    color: #0066cc; \/* \u6a19\u6e96\u30ea\u30f3\u30af\u8272 *\/\n    text-decoration: none;\n    white-space: nowrap;\n  }\n  .rs-related-tools a:hover,\n  .rs-related-tools a:focus {\n    text-decoration: underline;\n  }\n<\/style>\n<div class=\"rs-related-tools\">\n  <span class=\"rs-related-tools__label\">\u95a2\u9023\u30c4\u30fc\u30eb<\/span>\n  <a href=\"https:\/\/rakkokeyword.com\/techo\/tool-nslookup-dig\/\">nslookup \/ dig<\/a>\n  <a href=\"https:\/\/rakkokeyword.com\/techo\/tool-spf-checker\/\">SPF<\/a>\n  <a href=\"https:\/\/rakkokeyword.com\/techo\/tool-dkim-lookup\/\">DKIM<\/a>\n  <a href=\"https:\/\/rakkokeyword.com\/techo\/tool-txt-checker\/\">TXT<\/a>\n  <a href=\"https:\/\/rakkokeyword.com\/techo\/tool-mx-checker\/\">MX<\/a>\n<\/div>\n\n\n\n<p>\u3053\u306e\u30c4\u30fc\u30eb\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b<strong>DMARC\uff08\u30c7\u30a3\u30fc\u30de\u30fc\u30af\uff09\u30ec\u30b3\u30fc\u30c9\u3092\u5373\u5ea7\u306b\u78ba\u8a8d\u3067\u304d\u308b<\/strong>\u3001\u30b7\u30f3\u30d7\u30eb\u3067\u304b\u3093\u305f\u3093\u306a\u7121\u6599\u30c1\u30a7\u30c3\u30af\u30c4\u30fc\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u78ba\u8a8d\u3057\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b\u3059\u308b\u3060\u3051\u3067\u3001DNS\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308bDMARC\u30ec\u30b3\u30fc\u30c9\u306e\u751f\u30c7\u30fc\u30bf\u3068\u3001\u305d\u306e\u5185\u5bb9\u3092\u9805\u76ee\u3054\u3068\u306b\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u6790\u3057\u305f\u300c\u30d1\u30fc\u30b9\u6e08\u307f\u30d1\u30e9\u30e1\u30fc\u30bf\u300d\u3092\u540c\u6642\u306b\u8868\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u5225\u306a\u77e5\u8b58\u306f\u4e0d\u8981\u3067\u3001DMARC\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3001\u3069\u306e\u3088\u3046\u306a\u30dd\u30ea\u30b7\u30fc\uff08p=\uff09\u3084\u30ec\u30dd\u30fc\u30c8\u9001\u4fe1\u5148\uff08rua=\uff09\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u3059\u3050\u306b\u628a\u63e1\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-0\">DMARC\u30ec\u30b3\u30fc\u30c9\u78ba\u8a8d\u30c4\u30fc\u30eb\u306e\u4f7f\u3044\u65b9<\/h2>\n\n\n\n<p>\u4f7f\u3044\u65b9\u306f\u975e\u5e38\u306b\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u3002\u6700\u77ed2\u30b9\u30c6\u30c3\u30d7\u3067\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5165\u529b:DMARC\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u305f\u3044\u30c9\u30e1\u30a4\u30f3\u540d\uff08\u4f8b: example.com\uff09\u3092\u300c\u30c9\u30e1\u30a4\u30f3\u540d\u300d\u6b04\u306b\u5165\u529b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li>\uff08\u4efb\u610f\uff09DNS\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u5b9a:\u7279\u5b9a\u306eDNS\u30b5\u30fc\u30d0\u30fc\u3067\u78ba\u8a8d\u3057\u305f\u3044\u5834\u5408\u3001\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\uff08\u4f8b: 8.8.8.8\uff09\u3092\u300cDNS\u30b5\u30fc\u30d0\u30fc\u300d\u6b04\u306b\u5165\u529b\u3057\u307e\u3059\u3002\u7a7a\u6b04\u306e\u307e\u307e\u3067\u3082\u3001\u4e00\u822c\u7684\u306a\u30d1\u30d6\u30ea\u30c3\u30afDNS\uff088.8.8.8\uff09\u3092\u4f7f\u7528\u3057\u3066\u81ea\u52d5\u7684\u306b\u691c\u7d22\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u300c\u78ba\u8a8d\u3059\u308b\u300d\u3092\u30af\u30ea\u30c3\u30af:\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u3001\u5373\u5ea7\u306bDMARC\u30ec\u30b3\u30fc\u30c9\u306e\u691c\u7d22\u304c\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u5b9f\u884c\u7d50\u679c\u306e\u898b\u65b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DMARC\u30ec\u30b3\u30fc\u30c9\uff08\u751f\u30c7\u30fc\u30bf\uff09:DNS\u304b\u3089\u53d6\u5f97\u3057\u305fTXT\u30ec\u30b3\u30fc\u30c9\u306e\u305d\u306e\u307e\u307e\u306e\u6587\u5b57\u5217\u3067\u3059\u3002\uff08\u4f8b: v=DMARC1; p=reject; rua=mailto:report@example.com;\uff09<\/li>\n\n\n\n<li>\u30d1\u30fc\u30b9\u6e08\u307f\u30d1\u30e9\u30e1\u30fc\u30bf:\u751f\u30c7\u30fc\u30bf\u3092\u30bf\u30b0\uff08v\u3084p\u306a\u3069\uff09\u3054\u3068\u306b\u5206\u89e3\u3057\u3001\u5206\u304b\u308a\u3084\u3059\u304f\u8868\u5f62\u5f0f\u3067\u8868\u793a\u3057\u307e\u3059\u3002\u5404\u9805\u76ee\u304c\u3069\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u306b\u306a\u3063\u3066\u3044\u308b\u304b\u3092\u4e00\u76ee\u3067\u7406\u89e3\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-2\">DMARC\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>DMARC\uff08Domain-based Message Authentication, Reporting, and Conformance\uff09\u3068\u306f\u3001<strong>\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u6280\u8853<\/strong>\u306e\u4e00\u3064\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u3084\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u8a50\u6b3a\u3092\u9632\u3050\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002<\/p>\n\n\n\n<p>DMARC\u306f\u3001\u3059\u3067\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b<strong>SPF<\/strong>\uff08\u9001\u4fe1\u5143IP\u30a2\u30c9\u30ec\u30b9\u3092\u8a8d\u8a3c\uff09\u3084<strong>DKIM<\/strong>\uff08\u96fb\u5b50\u7f72\u540d\u3067\u6539\u3056\u3093\u3092\u691c\u77e5\uff09\u3068\u3044\u3063\u305f\u8a8d\u8a3c\u304c\u5931\u6557\u3057\u305f\u5834\u5408\u306b\u3001\u305d\u306e\u30e1\u30fc\u30eb\u3092\u3069\u306e\u3088\u3046\u306b\u6271\u3046\u304b\uff08\u9694\u96e2\u3001\u62d2\u5426\u306a\u3069\uff09\u3092\u3001\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u304c\u53d7\u4fe1\u5074\u30b5\u30fc\u30d0\u30fc\u306b\u30dd\u30ea\u30b7\u30fc\uff08\u65b9\u91dd\uff09\u3068\u3057\u3066\u5ba3\u8a00\u3059\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001DMARC\u306f\u8a8d\u8a3c\u7d50\u679c\u3084\u306a\u308a\u3059\u307e\u3057\u306e\u72b6\u6cc1\u3092\u30c9\u30e1\u30a4\u30f3\u6240\u6709\u8005\u306b\u30ec\u30dd\u30fc\u30c8\u3059\u308b\u6a5f\u80fd\u3082\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u3053\u306e\u30c4\u30fc\u30eb\u3067\u53d6\u5f97\u3059\u308b\u60c5\u5831\u306e\u57fa\u790e\u77e5\u8b58\uff08DMARC\u30ec\u30b3\u30fc\u30c9\u306e\u898b\u65b9\uff09<\/h2>\n\n\n\n<p>DMARC\u30ec\u30b3\u30fc\u30c9\u306f\u300c\u30bf\u30b0\u300d\u3068\u547c\u3070\u308c\u308b\u8b58\u5225\u5b50\u306e\u96c6\u307e\u308a\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c4\u30fc\u30eb\u3067\u8868\u793a\u3055\u308c\u308b\u4e3b\u8981\u306a\u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u30bf\u30b0\uff09\u306e\u610f\u5473\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n<div id=\"id-56a93a5b-4923-4cb1-9d95-16164c3b5b68\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>\u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u30bf\u30b0\uff09<\/strong><\/td><td><strong>\u540d\u79f0<\/strong><\/td><td><strong>\u6982\u8981<\/strong><\/td><\/tr><\/thead><tbody><tr><td><strong>v (Version)<\/strong><\/td><td>\u30d0\u30fc\u30b8\u30e7\u30f3<\/td><td><code>v=DMARC1<\/code> \u3068\u8a18\u8f09\u3055\u308c\u307e\u3059\u3002\u5fc5\u9808\u306e\u30bf\u30b0\u3067\u3059\u3002<\/td><\/tr><tr><td><strong>p (Policy)<\/strong><\/td><td>\u30dd\u30ea\u30b7\u30fc<\/td><td>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u30e1\u30fc\u30eb\u306e\u6271\u3044\u3092\u5b9a\u3081\u307e\u3059\u3002<strong>\u6700\u3082\u91cd\u8981\u306a\u30bf\u30b0<\/strong>\u3067\u3059\u3002<br>\u30fb <strong>none:<\/strong> \u4f55\u3082\u305b\u305a\u53d7\u4fe1\uff08\u76e3\u8996\u30fb\u30ec\u30dd\u30fc\u30c8\u306e\u307f\uff09<br>\u30fb <strong>quarantine:<\/strong> \u9694\u96e2\uff08\u8ff7\u60d1\u30e1\u30fc\u30eb\u30d5\u30a9\u30eb\u30c0\u306b\u5165\u308c\u308b\u306a\u3069\uff09<br>\u30fb <strong>reject:<\/strong> \u62d2\u5426\uff08\u53d7\u4fe1\u3092\u62d2\u5426\u3059\u308b\uff09<\/td><\/tr><tr><td><strong>sp (Subdomain Policy)<\/strong><\/td><td>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u30dd\u30ea\u30b7\u30fc<\/td><td><code>www.example.com<\/code> \u306e\u3088\u3046\u306a\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3059\u308b\u30dd\u30ea\u30b7\u30fc\u3092\u5b9a\u3081\u307e\u3059\u3002\u6307\u5b9a\u304c\u306a\u3044\u5834\u5408\u306f\u3001<code>p<\/code> \u30bf\u30b0\u306e\u8a2d\u5b9a\u304c\u7d99\u627f\u3055\u308c\u307e\u3059\u3002<\/td><\/tr><tr><td><strong>rua (Aggregate Reports)<\/strong><\/td><td>\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u306e\u9001\u4fe1\u5148<\/td><td>\u8a8d\u8a3c\u7d50\u679c\u306e\u7d71\u8a08\u30ec\u30dd\u30fc\u30c8\uff08\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\uff09\u3092\u53d7\u3051\u53d6\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\uff08\u4f8b: <code>mailto:dmarc-rua@example.com<\/code>\uff09<\/td><\/tr><tr><td><strong>ruf (Forensic Reports)<\/strong><\/td><td>\u8a8d\u8a3c\u5931\u6557\u30ec\u30dd\u30fc\u30c8\u306e\u9001\u4fe1\u5148<\/td><td>\u8a8d\u8a3c\u306b\u5931\u6557\u3057\u305f\u500b\u5225\u306e\u30e1\u30fc\u30eb\u60c5\u5831\uff08\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u30ec\u30dd\u30fc\u30c8\uff09\u3092\u53d7\u3051\u53d6\u308b\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\u3053\u306e\u30c4\u30fc\u30eb\u304c\u5f79\u7acb\u3064\u3068\u304d\u306f\u3069\u3093\u306a\u3068\u304d\uff1f\uff08\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\uff09<\/h2>\n\n\n\n<p>\u3053\u306e\u30c4\u30fc\u30eb\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5834\u9762\u3067\u7279\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DMARC\u3092\u65b0\u898f\u8a2d\u5b9a\u3057\u305f\u76f4\u5f8c\u306e\u78ba\u8a8d\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u306bDMARC\u30ec\u30b3\u30fc\u30c9\u3092\u8a2d\u5b9a\u3057\u305f\u5f8c\u3001DNS\u306b\u6b63\u3057\u304f\u53cd\u6620\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u305f\u3044\u3068\u304d\u3002<\/li>\n\n\n\n<li>Google\u30fbYahoo\u306e\u9001\u4fe1\u8005\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u5bfe\u5fdc2024\u5e74\u4ee5\u964d\u5f37\u5316\u3055\u308c\u305f\u300c\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u300d\u3067\u306f\u3001DMARC\u306e\u8a2d\u5b9a\u304c\u5fc5\u9808\uff08\u307e\u305f\u306f\u5f37\u304f\u63a8\u5968\uff09\u3068\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u81ea\u793e\u306e\u5bfe\u5fdc\u72b6\u6cc1\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u539f\u56e0\u306e\u8abf\u67fb\u81ea\u793e\u304b\u3089\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u300c\u306a\u308a\u3059\u307e\u3057\u300d\u3068\u8aa4\u5224\u5b9a\u3055\u308c\u3066\u5c4a\u304b\u306a\u3044\u5834\u5408\u3001DMARC\u30dd\u30ea\u30b7\u30fc\uff08p=reject \u306a\u3069\uff09\u304c\u610f\u56f3\u305b\u305a\u53b3\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002<\/li>\n\n\n\n<li>\u4ed6\u793e\u306e\u8a2d\u5b9a\u72b6\u6cc1\u306e\u8abf\u67fb\u53d6\u5f15\u5148\u3084\u7af6\u5408\u4ed6\u793e\u304c\u3069\u306e\u3088\u3046\u306aDMARC\u30dd\u30ea\u30b7\u30fc\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u304b\u3092\u53c2\u8003\u306b\u3059\u308b\u305f\u3081\u306b\u5229\u7528\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">DMARC\u5c0e\u5165\u306e\u5fc5\u8981\u6027\u3068\u8fd1\u5e74\u306e\u52d5\u5411<\/h2>\n\n\n\n<p>\u5f93\u6765\u3001DMARC\u306f\u63a8\u5968\u3055\u308c\u308b\u8a2d\u5b9a\u306e\u4e00\u3064\u3067\u3057\u305f\u304c\u3001\u8fd1\u5e74\u305d\u306e\u91cd\u8981\u6027\u304c\u6025\u901f\u306b\u9ad8\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306b\u3001Google\uff08Gmail\uff09\u3068\u7c73Yahoo!\u306f\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u30012024\u5e742\u6708\u4ee5\u964d\u3001\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u9001\u4fe1\u8005\uff08\u7279\u306b1\u65e55,000\u4ef6\u4ee5\u4e0a\u9001\u4fe1\u3059\u308b\u9001\u4fe1\u8005\uff09\u306b\u5bfe\u3057\u3066DMARC\u306e\u8a2d\u5b9a\u3092\u5fc5\u9808\u307e\u305f\u306f\u5f37\u304f\u8981\u6c42\u3059\u308b\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u3092\u767a\u8868\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5bfe\u5fdc\u3057\u306a\u3044\u5834\u5408\u3001\u9001\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u304c\u53d7\u4fe1\u62d2\u5426\u3055\u308c\u305f\u308a\u3001\u8ff7\u60d1\u30e1\u30fc\u30eb\u3068\u3057\u3066\u6271\u308f\u308c\u305f\u308a\u3059\u308b\u30ea\u30b9\u30af\u304c\u5927\u5e45\u306b\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>DMARC\u306e\u8a2d\u5b9a\u306f\u3001\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u60aa\u7528\u3057\u305f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u304b\u3089\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u3092\u5b88\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u3092\u78ba\u5b9f\u306b\u5c4a\u3051\u308b\u305f\u3081\u306b\u3082\u4e0d\u53ef\u6b20\u306a\u5bfe\u7b56\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u307e\u305a\u306f\u3053\u306e\u30c4\u30fc\u30eb\u3067\u73fe\u72b6\u3092\u78ba\u8a8d\u3057\u3001\u672a\u8a2d\u5b9a\u306e\u5834\u5408\u306f\u5c0e\u5165\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30c9\u30e1\u30a4\u30f3\u540d\u3068\u4f7f\u7528\u3059\u308bDNS\u30b5\u30fc\u30d0\u30fc\u3092\u5165\u529b\u3057\u3066\u300c\u78ba\u8a8d\u3059\u308b\u300d\u3092\u62bc\u3059\u3068\u3001DMARC\u30ec\u30b3\u30fc\u30c9(_dmarc.\u30c9\u30e1\u30a4\u30f3 \u306eTXT\u30ec\u30b3\u30fc\u30c9)\u3092\u53d6\u5f97\u3057\u3001\u751f\u30c7\u30fc\u30bf\u3068\u30d1\u30fc\u30b9\u6e08\u307f\u306e\u5404\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8868\u793a\u3057\u307e\u3059\u3002 \u30c9\u30e1\u30a4\u30f3\u540d \u5fc5\u9808 DMARC\u30ec\u30b3 &#8230; <\/p>\n","protected":false},"author":4,"featured_media":13503,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,51,55,52],"tags":[],"class_list":{"0":"post-12411","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-tool","8":"category-security","9":"category-mail","10":"category-dns","11":"entry"},"_links":{"self":[{"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/posts\/12411","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/comments?post=12411"}],"version-history":[{"count":0,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/posts\/12411\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/media\/13503"}],"wp:attachment":[{"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/media?parent=12411"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/categories?post=12411"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rakkokeyword.com\/techo\/wp-json\/wp\/v2\/tags?post=12411"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}