{"id":25622,"date":"2026-06-23T14:07:33","date_gmt":"2026-06-23T05:07:33","guid":{"rendered":"https:\/\/ardent.jp\/rentoffice-consultation-center\/?p=25622"},"modified":"2026-06-23T14:07:33","modified_gmt":"2026-06-23T05:07:33","slug":"exchange-online-security","status":"publish","type":"post","link":"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/","title":{"rendered":"Exchange Online\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\uff5c\u4e2d\u5c0f\u4f01\u696d\u304c\u4eca\u3059\u3050\u3084\u308b\u3079\u304d\u8a2d\u5b9a\u3068\u9078\u3073\u65b9"},"content":{"rendered":"<p>\u7d50\u8ad6\u304b\u3089\u304a\u4f1d\u3048\u3059\u308b\u3068\u3001Microsoft 365\u306e\u30e1\u30fc\u30eb\u57fa\u76e4\u300cExchange Online\u300d\u306f\u3001\u5951\u7d04\u3057\u305f\u3060\u3051\u3067\u4e00\u5b9a\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\uff08\u8ff7\u60d1\u30e1\u30fc\u30eb\u30fb\u30a6\u30a4\u30eb\u30b9\u306e\u81ea\u52d5\u6392\u9664\uff09\u304c\u50cd\u304d\u307e\u3059\u304c\u3001<strong>\u6a19\u6e96\u306e\u307e\u307e\u3067\u306f\u4e2d\u5c0f\u4f01\u696d\u3092\u72d9\u3046\u5de7\u5999\u306a\u653b\u6483\u3092\u9632\u304e\u304d\u308c\u307e\u305b\u3093<\/strong>\u3002\u3068\u304f\u306b\u300c\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u5bfe\u7b56\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u300d\u3068\u300c\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u300d\u306f\u3001\u8ffd\u52a0\u8cbb\u7528\u306a\u3057\u3067\u4eca\u3059\u3050\u8a2d\u5b9a\u3067\u304d\u308b\u5fc5\u9808\u5bfe\u7b56\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Exchange Online\u3067\u4f55\u304c\u6a19\u6e96\u3067\u5b88\u3089\u308c\u3001\u4f55\u3092\u8ffd\u52a0\u3067\u8a2d\u5b9a\u30fb\u5c0e\u5165\u3059\u3079\u304d\u304b\u3092\u3001\u4e2d\u5c0f\u4f01\u696d\u306e\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u62c5\u5f53\u8005\u30fb\u7d4c\u55b6\u8005\u5411\u3051\u306b\u3001\u512a\u5148\u9806\u4f4d\u3092\u3064\u3051\u3066\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002&nbsp;<\/p>\n<div style=\"border: 1px solid #f0d6d8; border-left: 5px solid #c8161d; background: #fdf5f5; padding: 14px 18px; margin: 16px 0; border-radius: 4px;\">\n<div style=\"font-size: 12px; color: #8b5a5d; margin-bottom: 6px; font-weight: bold; letter-spacing: 0.05em;\">\u25bc \u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/div>\n<p><a href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-meritto-demeritto-2\/\" style=\"color: #8a0e15; text-decoration: none; font-weight: bold; font-size: 15px; line-height: 1.5;\">Exchange Online\u3068\u306f\uff1f\u30e1\u30ea\u30c3\u30c8\u30fb\u30c7\u30e1\u30ea\u30c3\u30c8\u3092\u89e3\u8aac &#x27a1;<\/a>\n<\/div>\n<div style=\"height: 20px;\"><\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_77 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 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href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#Exchange_Online%E3%81%AE%E3%82%BB%E3%82%AD%E3%83%A5%E3%83%AA%E3%83%86%E3%82%A3%E5%AF%BE%E7%AD%96%E3%81%AF%E3%81%AA%E3%81%9C%E5%BF%85%E8%A6%81%EF%BC%9F%E6%A8%99%E6%BA%96%E3%81%A7%E5%AE%88%E3%82%8C%E3%82%8B%E7%AF%84%E5%9B%B2%E3%81%AF%EF%BC%9F\" >Exchange Online\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306f\u306a\u305c\u5fc5\u8981\uff1f\u6a19\u6e96\u3067\u5b88\u308c\u308b\u7bc4\u56f2\u306f\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#%E3%81%BE%E3%81%9A%E6%8A%BC%E3%81%95%E3%81%88%E3%82%8B%E3%80%8C%E3%81%AA%E3%82%8A%E3%81%99%E3%81%BE%E3%81%97%E5%AF%BE%E7%AD%96%E3%80%8D3%E7%82%B9%E3%82%BB%E3%83%83%E3%83%88%EF%BC%88SPF%E3%83%BBDKIM%E3%83%BBDMARC%EF%BC%89%E3%81%A8%E3%81%AF%EF%BC%9F\" 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href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#%E6%A8%99%E6%BA%96%E3%81%A7%E3%81%AF%E8%B6%B3%E3%82%8A%E3%81%AA%E3%81%84%EF%BC%9FMicrosoft_Defender_for_Office_365%E3%81%A7%E5%A4%9A%E5%B1%A4%E9%98%B2%E5%BE%A1\" >\u6a19\u6e96\u3067\u306f\u8db3\u308a\u306a\u3044\uff1fMicrosoft Defender for Office 365\u3067\u591a\u5c64\u9632\u5fa1<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#%E6%83%85%E5%A0%B1%E6%BC%8F%E3%81%88%E3%81%84%E3%82%92%E9%98%B2%E3%81%90%E8%A8%AD%E5%AE%9A%EF%BC%88DLP%E3%83%BB%E6%9A%97%E5%8F%B7%E5%8C%96%E3%83%BB%E8%AA%A4%E9%80%81%E4%BF%A1%E5%AF%BE%E7%AD%96%EF%BC%89%E3%81%AF%E3%81%A9%E3%81%86%E3%81%99%E3%82%8B%EF%BC%9F\" 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href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#%E4%B8%AD%E5%B0%8F%E4%BC%81%E6%A5%AD%E3%81%8C%E3%81%BE%E3%81%9A%E5%8F%96%E3%82%8A%E7%B5%84%E3%82%80%E3%81%B9%E3%81%8D%E5%84%AA%E5%85%88%E9%A0%86%E4%BD%8D%E3%81%AF%EF%BC%9F%EF%BC%88%E8%A3%9C%E5%8A%A9%E9%87%91%E3%81%AE%E6%B4%BB%E7%94%A8%E3%82%82%EF%BC%89\" >\u4e2d\u5c0f\u4f01\u696d\u304c\u307e\u305a\u53d6\u308a\u7d44\u3080\u3079\u304d\u512a\u5148\u9806\u4f4d\u306f\uff1f\uff08\u88dc\u52a9\u91d1\u306e\u6d3b\u7528\u3082\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#%E3%82%88%E3%81%8F%E3%81%82%E3%82%8B%E8%B3%AA%E5%95%8F%EF%BC%88Q_A%EF%BC%89\" >\u3088\u304f\u3042\u308b\u8cea\u554f\uff08Q&amp;A\uff09<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#Q_Exchange_Online%E3%81%AF%E5%A5%91%E7%B4%84%E3%81%99%E3%82%8B%E3%81%A0%E3%81%91%E3%81%A7%E5%AE%89%E5%85%A8%E3%81%A7%E3%81%99%E3%81%8B%EF%BC%9F\" >Q. Exchange Online\u306f\u5951\u7d04\u3059\u308b\u3060\u3051\u3067\u5b89\u5168\u3067\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#Q_%E5%A4%9A%E8%A6%81%E7%B4%A0%E8%AA%8D%E8%A8%BC%EF%BC%88MFA%EF%BC%89%E3%81%AF%E7%84%A1%E6%96%99%E3%81%A7%E4%BD%BF%E3%81%88%E3%81%BE%E3%81%99%E3%81%8B%EF%BC%9F\" >Q. \u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u306f\u7121\u6599\u3067\u4f7f\u3048\u307e\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#Q_Microsoft_Defender_for_Office_365%E3%81%AF%E5%BF%85%E3%81%9A%E5%BF%85%E8%A6%81%E3%81%A7%E3%81%99%E3%81%8B%EF%BC%9F\" >Q. Microsoft Defender for Office 365\u306f\u5fc5\u305a\u5fc5\u8981\u3067\u3059\u304b\uff1f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/exchange-online-security\/#Q_%E8%A8%AD%E5%AE%9A%E3%82%92%E8%87%AA%E7%A4%BE%E3%81%A0%E3%81%91%E3%81%A7%E8%A1%8C%E3%81%86%E3%81%AE%E3%81%8C%E4%B8%8D%E5%AE%89%E3%81%A7%E3%81%99%E3%80%82\" >Q. \u8a2d\u5b9a\u3092\u81ea\u793e\u3060\u3051\u3067\u884c\u3046\u306e\u304c\u4e0d\u5b89\u3067\u3059\u3002<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Exchange_Online%E3%81%AE%E3%82%BB%E3%82%AD%E3%83%A5%E3%83%AA%E3%83%86%E3%82%A3%E5%AF%BE%E7%AD%96%E3%81%AF%E3%81%AA%E3%81%9C%E5%BF%85%E8%A6%81%EF%BC%9F%E6%A8%99%E6%BA%96%E3%81%A7%E5%AE%88%E3%82%8C%E3%82%8B%E7%AF%84%E5%9B%B2%E3%81%AF%EF%BC%9F\"><\/span><span class=\"ez-toc-section\" id=\"exo-naze\"><\/span>Exchange Online\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306f\u306a\u305c\u5fc5\u8981\uff1f\u6a19\u6e96\u3067\u5b88\u308c\u308b\u7bc4\u56f2\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Exchange Online\u3068\u306f\u3001Microsoft 365\u306b\u542b\u307e\u308c\u308b\u30af\u30e9\u30a6\u30c9\u578b\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3067\u3059\u3002\u5951\u7d04\u3059\u308b\u3068\u6a19\u6e96\u3067\u300c<strong>Exchange Online Protection\uff08EOP\uff09<\/strong>\u300d\u3068\u3044\u3046\u30e1\u30fc\u30eb\u9632\u5fa1\u6a5f\u80fd\u304c\u6709\u52b9\u306b\u306a\u308a\u3001\u53d7\u4fe1\u30fb\u9001\u4fe1\u3059\u308b\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u3068\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u691c\u67fb\u3057\u3066\u3001\u30a6\u30a4\u30eb\u30b9\u3084\u660e\u3089\u304b\u306a\u8ff7\u60d1\u30e1\u30fc\u30eb\u3092\u81ea\u52d5\u3067\u30d6\u30ed\u30c3\u30af\u30fb\u9694\u96e2\u3057\u307e\u3059\u3002&nbsp;<\/p>\n<p>\u305f\u3060\u3057\u3001\u8fd1\u5e74\u306e\u653b\u6483\u306f\u300c\u53d6\u5f15\u5148\u3084\u81ea\u793e\u306e\u793e\u9577\u306b\u306a\u308a\u3059\u307e\u3057\u305f\u30e1\u30fc\u30eb\u300d\u300c\u672c\u7269\u305d\u3063\u304f\u308a\u306e\u507d\u30b5\u30a4\u30c8\u3078\u8a98\u5c0e\u3059\u308b\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u300d\u306a\u3069\u3001\u4eba\u3092\u3060\u307e\u3059\u624b\u53e3\u304c\u4e2d\u5fc3\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u6a19\u6e96\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\u3060\u3051\u3067\u306f\u3059\u308a\u629c\u3051\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u4e2d\u5c0f\u4f01\u696d\u3067\u3082\u88ab\u5bb3\uff08\u4e0d\u6b63\u9001\u91d1\u30fb\u60c5\u5831\u6f0f\u3048\u3044\u30fb\u30e9\u30f3\u30b5\u30e0\u30a6\u30a7\u30a2\u611f\u67d3\uff09\u304c\u73fe\u5b9f\u306b\u8d77\u304d\u3066\u3044\u307e\u3059\u3002&nbsp;<\/p>\n<p align=\"center\"><img decoding=\"async\" data-src=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-content\/uploads\/2026\/06\/exo_2.png\" alt=\"\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u76fe\" width=\"480\" height=\"320\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 480px; --smush-placeholder-aspect-ratio: 480\/320;\" \/><\/p>\n<p>\u305d\u3053\u3067\u3001\u300c\u6a19\u6e96\u3067\u3067\u304d\u308b\u3053\u3068\u300d\u3068\u300c\u8ffd\u52a0\u3067\u5bfe\u7b56\u3059\u3079\u304d\u3053\u3068\u300d\u3092\u5207\u308a\u5206\u3051\u3066\u8003\u3048\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u5168\u4f53\u50cf\u3092\u4e0b\u306e\u8868\u3067\u6574\u7406\u3057\u307e\u3059\u3002&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: left;\">\u5bfe\u7b56<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u6a19\u6e96\uff08EOP\uff09\u3067\u53ef\u80fd\u304b<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u4e2d\u5c0f\u4f01\u696d\u306e\u512a\u5148\u5ea6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30a6\u30a4\u30eb\u30b9\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u6392\u9664<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef \u6a19\u6e96\u3067\u6709\u52b9<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u2015<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\uff08SPF\/DKIM\/DMARC\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25b3 \u8a2d\u5b9a\u304c\u5fc5\u8981\uff08\u8ffd\u52a0\u8cbb\u7528\u306a\u3057\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u2605\u2605\u2605 \u6700\u512a\u5148<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25b3 \u8a2d\u5b9a\u304c\u5fc5\u8981\uff08\u8ffd\u52a0\u8cbb\u7528\u306a\u3057\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u2605\u2605\u2605 \u6700\u512a\u5148<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u4e0d\u5be9\u30ea\u30f3\u30af\u30fb\u6dfb\u4ed8\u306e\u9ad8\u5ea6\u691c\u67fb<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u00d7 \u4e0a\u4f4d\u30d7\u30e9\u30f3\uff08Defender\uff09\u304c\u5fc5\u8981<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u2605\u2605 \u63a8\u5968<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u60c5\u5831\u6f0f\u3048\u3044\u9632\u6b62\uff08DLP\uff09\u30fb\u6697\u53f7\u5316<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u00d7 \u4e0a\u4f4d\u30d7\u30e9\u30f3\u304c\u5fc5\u8981<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u2605\u2605 \u63a8\u5968<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u6a19\u6e96\u6a5f\u80fd\uff08EOP\uff09\u306e\u8a73\u7d30\u306f\u3001Microsoft\u306e\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3067\u3082\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002&nbsp;<\/p>\n<p align=\"center\">\n<a href=\"https:\/\/learn.microsoft.com\/ja-jp\/defender-office-365\/eop-about\" target=\"_blank\" rel=\"noopener\" class=\"q_button bt_red\">Exchange Online Protection\u516c\u5f0f\u60c5\u5831 &#x27a1;<\/a>\n<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%9A%E6%8A%BC%E3%81%95%E3%81%88%E3%82%8B%E3%80%8C%E3%81%AA%E3%82%8A%E3%81%99%E3%81%BE%E3%81%97%E5%AF%BE%E7%AD%96%E3%80%8D3%E7%82%B9%E3%82%BB%E3%83%83%E3%83%88%EF%BC%88SPF%E3%83%BBDKIM%E3%83%BBDMARC%EF%BC%89%E3%81%A8%E3%81%AF%EF%BC%9F\"><\/span><span class=\"ez-toc-section\" id=\"exo-narisumashi\"><\/span>\u307e\u305a\u62bc\u3055\u3048\u308b\u300c\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u300d3\u70b9\u30bb\u30c3\u30c8\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u3068\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e2d\u5c0f\u4f01\u696d\u304c\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3067\u6700\u521d\u306b\u53d6\u308a\u7d44\u3080\u3079\u304d\u306a\u306e\u304c\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u306e3\u70b9\u30bb\u30c3\u30c8\u3067\u3059\u3002\u3053\u308c\u306f\u81ea\u793e\u306e\u30c9\u30e1\u30a4\u30f3\uff08@\u4f1a\u793e\u540d.co.jp\uff09\u3092\u52dd\u624b\u306b\u4f7f\u3063\u305f\u507d\u30e1\u30fc\u30eb\u3092\u3001\u76f8\u624b\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u300c\u3053\u308c\u306f\u507d\u7269\u3060\u300d\u3068\u5224\u65ad\u3057\u3066\u3082\u3089\u3046\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3067\u3059\u3002\u8ffd\u52a0\u8cbb\u7528\u306f\u304b\u304b\u3089\u305a\u3001DNS\uff08\u30c9\u30e1\u30a4\u30f3\u306e\u8a2d\u5b9a\u60c5\u5831\uff09\u3078\u306e\u767b\u9332\u3067\u884c\u3044\u307e\u3059\u3002&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: left;\">\u4ed5\u7d44\u307f<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u5f79\u5272\uff08\u3084\u3055\u3057\u304f\u8a00\u3046\u3068\uff09<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">SPF<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u300c\u3046\u3061\u306e\u30e1\u30fc\u30eb\u3092\u9001\u308c\u308b\u306e\u306f\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u3060\u3051\u300d\u3068\u5ba3\u8a00\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">DKIM<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30e1\u30fc\u30eb\u306b\u96fb\u5b50\u7684\u306a\u300c\u5c01\u5370\uff08\u7f72\u540d\uff09\u300d\u3092\u4ed8\u3051\u3001\u6539\u3056\u3093\u3092\u898b\u629c\u304f<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">DMARC<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u507d\u7269\u3060\u3063\u305f\u5834\u5408\u306e\u6271\u3044\uff08\u9694\u96e2\u30fb\u62d2\u5426\uff09\u3092\u6307\u793a\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Exchange Online\u3067\u306f\u3001SPF\u306f\u5951\u7d04\u6642\u306b\u307b\u307c\u81ea\u52d5\u3067\u8a2d\u5b9a\u3055\u308c\u3001DKIM\u306fMicrosoft\u306e\u7ba1\u7406\u753b\u9762\uff08Defender\u30dd\u30fc\u30bf\u30eb\uff09\u304b\u3089\u6709\u52b9\u5316\u3001DMARC\u306fDNS\u3078\u306e\u8ffd\u52a0\u767b\u9332\u3067\u8a2d\u5b9a\u3057\u307e\u3059\u3002\u3068\u304f\u306bGmail\u30fbYahoo!\u306a\u3069\u306f\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\u304c\u672a\u8a2d\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u5c4a\u304f\u30e1\u30fc\u30eb\u3092<strong>\u8ff7\u60d1\u30e1\u30fc\u30eb\u6271\u3044\u3084\u53d7\u4fe1\u62d2\u5426\u306b\u3059\u308b\u52d5\u304d\u3092\u5f37\u3081\u3066\u304a\u308a<\/strong>\u3001\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u304c\u53d6\u5f15\u5148\u306b\u5c4a\u304b\u306a\u304f\u306a\u308b\u30ea\u30b9\u30af\u3082\u3042\u308a\u307e\u3059\u3002\u653b\u6483\u5bfe\u7b56\u3068\u300c\u5c4a\u3051\u308b\u305f\u3081\u300d\u306e\u4e21\u9762\u3067\u5fc5\u9808\u306e\u8a2d\u5b9a\u3067\u3059\u3002&nbsp;<\/p>\n<p>DNS\u306e\u8a2d\u5b9a\u306f\u30df\u30b9\u304c\u3042\u308b\u3068\u30e1\u30fc\u30eb\u4e0d\u9054\u306b\u3064\u306a\u304c\u308b\u305f\u3081\u3001\u4e0d\u5b89\u306a\u5834\u5408\u306f\u5c02\u9580\u5bb6\u306b\u78ba\u8a8d\u3057\u306a\u304c\u3089\u9032\u3081\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059\u3002\u4ed5\u7d44\u307f\u306e\u8a73\u7d30\u306f\u3001\u4e0b\u306e\u304b\u307f\u7815\u3044\u305f\u89e3\u8aac\u8a18\u4e8b\u3082\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002&nbsp;<\/p>\n<p align=\"center\">\n<a href=\"https:\/\/c-compe.com\/securitysoft\/news\/spf-dkim-dmarc\/\" target=\"_blank\" rel=\"noopener\" class=\"q_button bt_red\">SPF\u30fbDKIM\u30fbDMARC\u306e\u89e3\u8aac\u3092\u898b\u308b &#x27a1;<\/a>\n<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E5%A4%9A%E8%A6%81%E7%B4%A0%E8%AA%8D%E8%A8%BC%EF%BC%88MFA%EF%BC%89%E3%81%A8%E6%9D%A1%E4%BB%B6%E4%BB%98%E3%81%8D%E3%82%A2%E3%82%AF%E3%82%BB%E3%82%B9%E3%81%A7%E3%82%A2%E3%82%AB%E3%82%A6%E3%83%B3%E3%83%88%E3%82%92%E5%AE%88%E3%82%8B%E3%81%AB%E3%81%AF%EF%BC%9F\"><\/span><span class=\"ez-toc-section\" id=\"exo-mfa\"><\/span>\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u3068\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u3067\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u5b88\u308b\u306b\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u30e1\u30fc\u30eb\u88ab\u5bb3\u306e\u591a\u304f\u306f\u300cID\u3068\u30d1\u30b9\u30ef\u30fc\u30c9\u306e\u76d7\u96e3\u300d\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u3068\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u6642\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u306b\u52a0\u3048\u3066\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u8a8d\u8a3c\u30a2\u30d7\u30ea\u3084\u30ef\u30f3\u30bf\u30a4\u30e0\u30b3\u30fc\u30c9\u306a\u3069<strong>\u300c\u672c\u4eba\u3060\u3051\u304c\u6301\u30642\u3064\u76ee\u306e\u9375\u300d<\/strong>\u3092\u6c42\u3081\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u6f0f\u308c\u3066\u3082\u3001\u305d\u308c\u3060\u3051\u3067\u306f\u4fb5\u5165\u3055\u308c\u306b\u304f\u304f\u306a\u308a\u307e\u3059\u3002&nbsp;<\/p>\n<p align=\"center\"><img decoding=\"async\" data-src=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-content\/uploads\/2026\/06\/exo_3.png\" alt=\"\u7ba1\u7406\u8005\u304cMFA\u3092\u8a2d\u5b9a\" width=\"480\" height=\"320\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 480px; --smush-placeholder-aspect-ratio: 480\/320;\" \/><\/p>\n<p>MFA\u306fMicrosoft 365\u306e\u5168\u30d7\u30e9\u30f3\u3067\u8ffd\u52a0\u8cbb\u7528\u306a\u304f\u5229\u7528\u3067\u304d\u3001\u7ba1\u7406\u753b\u9762\u306e\u300c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u65e2\u5b9a\u5024\uff08Security Defaults\uff09\u300d\u3092\u6709\u52b9\u306b\u3059\u308b\u3060\u3051\u3067\u3082\u5168\u793e\u306b\u9069\u7528\u3067\u304d\u307e\u3059\u3002<strong>\u307e\u305a\u5168\u30e6\u30fc\u30b6\u30fc\u3067MFA\u3092\u5fc5\u9808\u306b\u3059\u308b\u3053\u3068<\/strong>\u304c\u3001\u6700\u3082\u8cbb\u7528\u5bfe\u52b9\u679c\u306e\u9ad8\u3044\u5bfe\u7b56\u3067\u3059\u3002&nbsp;<\/p>\n<p>\u3055\u3089\u306b\u4e0a\u4f4d\u30d7\u30e9\u30f3\u3067\u4f7f\u3048\u308b\u300c\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u300d\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3068\u3001\u300c\u793e\u5916\u306e\u898b\u77e5\u3089\u306c\u56fd\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9\u306f\u30d6\u30ed\u30c3\u30af\u300d\u300c\u4f1a\u793e\u304c\u8a31\u53ef\u3057\u305f\u7aef\u672b\u3060\u3051\u8a31\u53ef\u300d\u3068\u3044\u3063\u305f\u3001\u3088\u308a\u7d30\u304b\u3044\u5236\u5fa1\u304c\u3067\u304d\u307e\u3059\u3002\u30c6\u30ec\u30ef\u30fc\u30af\u3067\u793e\u5916\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3059\u308b\u6a5f\u4f1a\u304c\u591a\u3044\u4f01\u696d\u307b\u3069\u52b9\u679c\u7684\u3067\u3059\u3002&nbsp;<\/p>\n<div style=\"border: 1px solid #f0d6d8; border-left: 5px solid #c8161d; background: #fdf5f5; padding: 14px 18px; margin: 16px 0; border-radius: 4px;\">\n<div style=\"font-size: 12px; color: #8b5a5d; margin-bottom: 6px; font-weight: bold; letter-spacing: 0.05em;\">\u25bc \u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/div>\n<p><a href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/microsoft-365-kanri-center\/\" style=\"color: #8a0e15; text-decoration: none; font-weight: bold; font-size: 15px; line-height: 1.5;\">Microsoft 365\u7ba1\u7406\u30bb\u30f3\u30bf\u30fc\u306e\u4f7f\u3044\u65b9\uff08\u8a2d\u5b9a\u7b87\u6240\u306e\u78ba\u8a8d\u306b\uff09 &#x27a1;<\/a>\n<\/div>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E6%A8%99%E6%BA%96%E3%81%A7%E3%81%AF%E8%B6%B3%E3%82%8A%E3%81%AA%E3%81%84%EF%BC%9FMicrosoft_Defender_for_Office_365%E3%81%A7%E5%A4%9A%E5%B1%A4%E9%98%B2%E5%BE%A1\"><\/span><span class=\"ez-toc-section\" id=\"exo-defender\"><\/span>\u6a19\u6e96\u3067\u306f\u8db3\u308a\u306a\u3044\uff1fMicrosoft Defender for Office 365\u3067\u591a\u5c64\u9632\u5fa1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5de7\u5999\u306a\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3084\u3001\u958b\u3044\u305f\u77ac\u9593\u306b\u611f\u67d3\u3059\u308b\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u306a\u3069\u3001\u6a19\u6e96\u306eEOP\u3060\u3051\u3067\u306f\u9632\u304e\u306b\u304f\u3044\u653b\u6483\u306b\u5099\u3048\u308b\u306e\u304c\u300c<strong>Microsoft Defender for Office 365<\/strong>\u300d\u3067\u3059\u3002\u4e2d\u5c0f\u4f01\u696d\u3067\u3068\u304f\u306b\u5f79\u7acb\u3064\u306e\u304c\u6b21\u306e2\u6a5f\u80fd\u3067\u3059\u3002&nbsp;<\/p>\n<p align=\"center\"><img decoding=\"async\" data-src=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-content\/uploads\/2026\/06\/exo_4.png\" alt=\"\u591a\u5c64\u9632\u5fa1\u306e\u30a4\u30e1\u30fc\u30b8\" width=\"480\" height=\"320\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" class=\"lazyload\" style=\"--smush-placeholder-width: 480px; --smush-placeholder-aspect-ratio: 480\/320;\" \/><\/p>\n<ul>\n<li><strong>\u5b89\u5168\u306a\u30ea\u30f3\u30af\uff08Safe Links\uff09<\/strong>\uff1a\u30e1\u30fc\u30eb\u5185\u306eURL\u3092\u30af\u30ea\u30c3\u30af\u3057\u305f\u77ac\u9593\u306b\u5b89\u5168\u6027\u3092\u518d\u30c1\u30a7\u30c3\u30af\u3057\u3001\u507d\u30b5\u30a4\u30c8\u3078\u306e\u8a98\u5c0e\u3092\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059<\/li>\n<li><strong>\u5b89\u5168\u306a\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\uff08Safe Attachments\uff09<\/strong>\uff1a\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u9694\u96e2\u74b0\u5883\u3067\u5b9f\u969b\u306b\u958b\u3044\u3066\u691c\u67fb\u3057\u3001\u672a\u77e5\u306e\u30a6\u30a4\u30eb\u30b9\u3092\u898b\u3064\u3051\u307e\u3059<\/li>\n<\/ul>\n<p>Defender for Office 365\u306b\u306f\u300c\u30d7\u30e9\u30f31\u300d\u3068\u300c\u30d7\u30e9\u30f32\u300d\u304c\u3042\u308a\u3001\u4e2d\u5c0f\u4f01\u696d\u306f\u307e\u305a\u4e0a\u8a18\u306e\u9632\u5fa1\u304c\u542b\u307e\u308c\u308b<strong>\u30d7\u30e9\u30f31<\/strong>\u3067\u5341\u5206\u306a\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002\u30d7\u30e9\u30f31\u306f\u300cMicrosoft 365 Business Premium\u300d\u306b\u6a19\u6e96\u3067\u542b\u307e\u308c\u3066\u3044\u308b\u305f\u3081\u3001Premium\u3092\u9078\u3079\u3070\u8ffd\u52a0\u8cfc\u5165\u306f\u4e0d\u8981\u3067\u3059\u3002\u30d7\u30e9\u30f3\u3054\u3068\u306e\u9055\u3044\u306f\u4e0b\u306e\u6bd4\u8f03\u8a18\u4e8b\u304c\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002&nbsp;<\/p>\n<p align=\"center\">\n<a href=\"https:\/\/c-compe.com\/securitysoft\/securitysoft-knowledge\/defender-office365-plan-hikaku\/\" target=\"_blank\" rel=\"noopener\" class=\"q_button bt_red\">Defender for Office 365 \u30d7\u30e9\u30f3\u6bd4\u8f03\u3092\u898b\u308b &#x27a1;<\/a>\n<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E6%83%85%E5%A0%B1%E6%BC%8F%E3%81%88%E3%81%84%E3%82%92%E9%98%B2%E3%81%90%E8%A8%AD%E5%AE%9A%EF%BC%88DLP%E3%83%BB%E6%9A%97%E5%8F%B7%E5%8C%96%E3%83%BB%E8%AA%A4%E9%80%81%E4%BF%A1%E5%AF%BE%E7%AD%96%EF%BC%89%E3%81%AF%E3%81%A9%E3%81%86%E3%81%99%E3%82%8B%EF%BC%9F\"><\/span><span class=\"ez-toc-section\" id=\"exo-dlp\"><\/span>\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u8a2d\u5b9a\uff08DLP\u30fb\u6697\u53f7\u5316\u30fb\u8aa4\u9001\u4fe1\u5bfe\u7b56\uff09\u306f\u3069\u3046\u3059\u308b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5916\u90e8\u304b\u3089\u306e\u653b\u6483\u3060\u3051\u3067\u306a\u304f\u3001<strong>\u793e\u5185\u304b\u3089\u306e\u60c5\u5831\u6f0f\u3048\u3044<\/strong>\u3078\u306e\u5099\u3048\u3082\u6b20\u304b\u305b\u307e\u305b\u3093\u3002Exchange Online\u3068\u9023\u643a\u3059\u308bMicrosoft 365\u306e\u6a5f\u80fd\u3067\u3001\u6b21\u306e\u3088\u3046\u306a\u5bfe\u7b56\u304c\u3067\u304d\u307e\u3059\u3002&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: left;\">\u6a5f\u80fd<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u3067\u304d\u308b\u3053\u3068<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">DLP\uff08\u60c5\u5831\u6f0f\u3048\u3044\u9632\u6b62\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30de\u30a4\u30ca\u30f3\u30d0\u30fc\u3084\u30ab\u30fc\u30c9\u756a\u53f7\u3092\u542b\u3080\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u81ea\u52d5\u3067\u8b66\u544a\u30fb\u30d6\u30ed\u30c3\u30af<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u91cd\u8981\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3057\u3001\u5b9b\u5148\u4ee5\u5916\u304c\u4e2d\u8eab\u3092\u8aad\u3081\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u9001\u4fe1\u30c8\u30ec\u30a4\u306e\u4fdd\u7559<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u9001\u4fe1\u3092\u6570\u5206\u9045\u3089\u305b\u3001\u8aa4\u9001\u4fe1\u306b\u6c17\u3065\u3044\u305f\u3089\u53d6\u308a\u6d88\u305b\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u76e3\u67fb\u30ed\u30b0<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u8ab0\u304c\u3044\u3064\u30e1\u30fc\u30eb\u3092\u64cd\u4f5c\u3057\u305f\u304b\u3092\u8a18\u9332\u3057\u3001\u8abf\u67fb\u306b\u4f7f\u3048\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>DLP\u3084\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u4e0a\u4f4d\u30d7\u30e9\u30f3\u306e\u6a5f\u80fd\u3067\u3059\u304c\u3001\u8aa4\u9001\u4fe1\u5bfe\u7b56\uff08\u9001\u4fe1\u306e\u9045\u5ef6\uff09\u3084\u76e3\u67fb\u30ed\u30b0\u306f\u6bd4\u8f03\u7684\u3059\u3050\u306b\u7740\u624b\u3067\u304d\u307e\u3059\u3002\u81ea\u793e\u306e\u6271\u3046\u60c5\u5831\uff08\u500b\u4eba\u60c5\u5831\u30fb\u53d6\u5f15\u5148\u60c5\u5831\uff09\u306e\u91cd\u8981\u5ea6\u306b\u5fdc\u3058\u3066\u3001\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u898b\u6975\u3081\u307e\u3057\u3087\u3046\u3002&nbsp;<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E3%83%A9%E3%82%A4%E3%82%BB%E3%83%B3%E3%82%B9%E5%88%A5%E3%82%BB%E3%82%AD%E3%83%A5%E3%83%AA%E3%83%86%E3%82%A3%E6%A9%9F%E8%83%BD%E3%81%AE%E9%81%95%E3%81%84%E3%81%A8%E4%B8%AD%E5%B0%8F%E4%BC%81%E6%A5%AD%E3%81%AE%E9%81%B8%E3%81%B3%E6%96%B9%E3%81%AF%EF%BC%9F\"><\/span><span class=\"ez-toc-section\" id=\"exo-license\"><\/span>\u30e9\u30a4\u30bb\u30f3\u30b9\u5225\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u306e\u9055\u3044\u3068\u4e2d\u5c0f\u4f01\u696d\u306e\u9078\u3073\u65b9\u306f\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u3053\u308c\u307e\u3067\u7d39\u4ecb\u3057\u305f\u5bfe\u7b56\u306e\u591a\u304f\u306f\u3001\u5951\u7d04\u3059\u308bMicrosoft 365\u306e\u30d7\u30e9\u30f3\u306b\u3088\u3063\u3066\u300c\u4f7f\u3048\u308b\uff0f\u4f7f\u3048\u306a\u3044\u300d\u304c\u5206\u304b\u308c\u307e\u3059\u3002\u4e2d\u5c0f\u4f01\u696d\u3067\u3088\u304f\u691c\u8a0e\u3055\u308c\u308b2\u30d7\u30e9\u30f3\u3092\u6bd4\u3079\u308b\u3068\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u3067\u306f\u5927\u304d\u306a\u5dee\u304c\u3042\u308a\u307e\u3059\u3002&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: left;\">\u6a5f\u80fd<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">Business Standard<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">Business Premium<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">EOP\u30fbMFA\u30fb\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">Defender for Office 365 \u30d7\u30e9\u30f31<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u00d7\uff08\u5225\u9014\u8ffd\u52a0\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef \u6a19\u6e96\u3067\u542b\u3080<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u30fbDLP<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u00d7<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u7aef\u672b\u7ba1\u7406\uff08Intune\uff09<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u00d7<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u25ef<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3064\u307e\u308a\u3001<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u3057\u3063\u304b\u308a\u56fa\u3081\u305f\u3044\u306a\u3089\u300cBusiness Premium\u300d<\/strong>\u304c\u4e2d\u5c0f\u4f01\u696d\u306b\u3068\u3063\u3066\u6709\u529b\u306a\u9078\u629e\u80a2\u3067\u3059\u3002Standard\u3088\u308a1\u4eba\u3042\u305f\u308a\u306e\u6708\u984d\u306f\u4e0a\u304c\u308a\u307e\u3059\u304c\u3001Defender\u30fb\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u30fb\u7aef\u672b\u7ba1\u7406\u3092\u500b\u5225\u306b\u8cb7\u3044\u8db3\u3059\u3088\u308a\u5272\u5b89\u306b\u306a\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u3067\u3059\u3002\u6700\u65b0\u306e\u6599\u91d1\u3084\u30d7\u30e9\u30f3\u69cb\u6210\u306f\u5909\u308f\u308b\u305f\u3081\u3001\u4e0b\u306e\u6599\u91d1\u8a18\u4e8b\u3068\u516c\u5f0f\u60c5\u5831\u3067\u5fc5\u305a\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002&nbsp;<\/p>\n<div style=\"border: 1px solid #f0d6d8; border-left: 5px solid #c8161d; background: #fdf5f5; padding: 14px 18px; margin: 16px 0; border-radius: 4px;\">\n<div style=\"font-size: 12px; color: #8b5a5d; margin-bottom: 6px; font-weight: bold; letter-spacing: 0.05em;\">\u25bc \u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/div>\n<p><a href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/microsoft365-ryoukin\/\" style=\"color: #8a0e15; text-decoration: none; font-weight: bold; font-size: 15px; line-height: 1.5;\">Microsoft 365\u306e\u6599\u91d1\u30fb\u30d7\u30e9\u30f3\u3092\u5fb9\u5e95\u6bd4\u8f03 &#x27a1;<\/a>\n<\/div>\n<p>Microsoft 365\u305d\u306e\u3082\u306e\u306e\u5c0e\u5165\u30fb\u904b\u7528\u306e\u3054\u76f8\u8ac7\u306f\u3001\u4e2d\u5c0f\u4f01\u696d\u5411\u3051\u306e\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u7d39\u4ecb\u30b5\u30a4\u30c8\u3082\u3054\u89a7\u304f\u3060\u3055\u3044\u3002&nbsp;<\/p>\n<p align=\"center\">\n<a href=\"https:\/\/aclouds.ardent.jp\/groupware\/microsoft365\/\" target=\"_blank\" rel=\"noopener\" class=\"q_button bt_red\">Microsoft 365\u306e\u8a73\u7d30\u3092\u898b\u308b &#x27a1;<\/a>\n<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E4%B8%AD%E5%B0%8F%E4%BC%81%E6%A5%AD%E3%81%8C%E3%81%BE%E3%81%9A%E5%8F%96%E3%82%8A%E7%B5%84%E3%82%80%E3%81%B9%E3%81%8D%E5%84%AA%E5%85%88%E9%A0%86%E4%BD%8D%E3%81%AF%EF%BC%9F%EF%BC%88%E8%A3%9C%E5%8A%A9%E9%87%91%E3%81%AE%E6%B4%BB%E7%94%A8%E3%82%82%EF%BC%89\"><\/span><span class=\"ez-toc-section\" id=\"exo-priority\"><\/span>\u4e2d\u5c0f\u4f01\u696d\u304c\u307e\u305a\u53d6\u308a\u7d44\u3080\u3079\u304d\u512a\u5148\u9806\u4f4d\u306f\uff1f\uff08\u88dc\u52a9\u91d1\u306e\u6d3b\u7528\u3082\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u300c\u3042\u308c\u3082\u3053\u308c\u3082\u300d\u3068\u4e00\u5ea6\u306b\u9032\u3081\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8cbb\u7528\u5bfe\u52b9\u679c\u306e\u9ad8\u3044\u9806\u306b\u3001\u6bb5\u968e\u7684\u306b\u9032\u3081\u308b\u306e\u304c\u73fe\u5b9f\u7684\u3067\u3059\u3002&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 100%;\">\n<thead>\n<tr>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: left;\">\u30b9\u30c6\u30c3\u30d7<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u53d6\u308a\u7d44\u3080\u5185\u5bb9<\/th>\n<th style=\"background-color: #296b91; color: #ffffff; padding: 10px; border: 1px solid #ccc; font-weight: bold; text-align: center;\">\u8cbb\u7528<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">STEP1<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u5168\u54e1\u306eMFA\u3092\u5fc5\u9808\u306b\u3059\u308b<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u8ffd\u52a0\u8cbb\u7528\u306a\u3057<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">STEP2<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">SPF\u30fbDKIM\u30fbDMARC\u3092\u8a2d\u5b9a\u3059\u308b<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u8ffd\u52a0\u8cbb\u7528\u306a\u3057<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">STEP3<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">Defender\uff08\u5b89\u5168\u306a\u30ea\u30f3\u30af\u30fb\u6dfb\u4ed8\uff09\u3092\u6709\u52b9\u5316<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30d7\u30e9\u30f3\u8cbb\u7528<\/td>\n<\/tr>\n<tr>\n<td style=\"background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">STEP4<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">DLP\u30fb\u6697\u53f7\u5316\u30fb\u6761\u4ef6\u4ed8\u304d\u30a2\u30af\u30bb\u30b9\u3092\u6574\u5099<\/td>\n<td style=\"text-align: center; background-color: #edf1fa; color: #000000; padding: 10px; border: 1px solid #ccc;\">\u30d7\u30e9\u30f3\u8cbb\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>STEP1\u30fb2\u306f\u4eca\u3059\u3050\u7121\u6599\u3067\u7740\u624b\u3059\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002STEP3\u4ee5\u964d\u3067Business Premium\u3078\u306e\u5207\u308a\u66ff\u3048\u3084\u5c02\u9580\u7684\u306a\u8a2d\u5b9a\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u3053\u3046\u3057\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\u3092\u542b\u3080\u30af\u30e9\u30a6\u30c9\u30c4\u30fc\u30eb\u306e\u5c0e\u5165\u8cbb\u7528\u306f\u3001<strong>\u30c7\u30b8\u30bf\u30eb\u5316\u30fbAI\u5c0e\u5165\u88dc\u52a9\u91d1<\/strong>\u306e\u5bfe\u8c61\u3068\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u88dc\u52a9\u91d1\u306e\u8981\u4ef6\u30fb\u5bfe\u8c61\u306f\u5e74\u5ea6\u3054\u3068\u306b\u5909\u308f\u308b\u305f\u3081\u3001\u6700\u65b0\u306e\u516c\u52df\u8981\u9818\u306e\u78ba\u8a8d\u3084\u5c02\u9580\u5bb6\u3078\u306e\u76f8\u8ac7\u304c\u5fc5\u8981\u3067\u3059\u3002&nbsp;<\/p>\n<p>\u300c\u81ea\u793e\u306e\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u4eca\u3069\u306e\u30ec\u30d9\u30eb\u304b\u4e0d\u5b89\u300d\u300cBusiness Premium\u3078\u306e\u79fb\u884c\u3068\u88dc\u52a9\u91d1\u6d3b\u7528\u3092\u307e\u3068\u3081\u3066\u76f8\u8ac7\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u5834\u5408\u306f\u3001\u305c\u3072\u4e00\u5ea6\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002\u8a2d\u5b9a\u72b6\u6cc1\u306e\u78ba\u8a8d\u304b\u3089\u3001\u88dc\u52a9\u91d1\u3092\u6d3b\u7528\u3057\u305f\u30b3\u30b9\u30c8\u524a\u6e1b\u307e\u3067\u3054\u652f\u63f4\u3057\u307e\u3059\u3002&nbsp;<\/p>\n<div style=\"border: 1px solid #f0d6d8; border-left: 5px solid #c8161d; background: #fdf5f5; padding: 14px 18px; margin: 16px 0; border-radius: 4px;\">\n<div style=\"font-size: 12px; color: #8b5a5d; margin-bottom: 6px; font-weight: bold; letter-spacing: 0.05em;\">\u25bc \u3042\u308f\u305b\u3066\u8aad\u307f\u305f\u3044<\/div>\n<p><a href=\"https:\/\/ardent.jp\/rentoffice-consultation-center\/costdown\/google-microsoft\/microsoft365-security\/\" style=\"color: #8a0e15; text-decoration: none; font-weight: bold; font-size: 15px; line-height: 1.5;\">Microsoft 365\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u307e\u3068\u3081 &#x27a1;<\/a>\n<\/div>\n<p>\u30af\u30e9\u30a6\u30c9\u578b\u30fb\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4\u578b\u306a\u3069\u3001Microsoft 365\u6a19\u6e96\u4ee5\u5916\u306e\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u3068\u6bd4\u8f03\u691c\u8a0e\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4e2d\u5c0f\u4f01\u696d\u5411\u3051\u306e\u9078\u3073\u65b9\u30ac\u30a4\u30c9\u3082\u53c2\u8003\u306b\u306a\u308a\u307e\u3059\u3002&nbsp;<\/p>\n<p align=\"center\">\n<a href=\"https:\/\/c-compe.com\/securitysoft\/news\/corporate-mail-security-guide\/\" target=\"_blank\" rel=\"noopener\" class=\"q_button bt_red\">\u6cd5\u4eba\u5411\u3051\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u9078\u3073\u65b9\u3092\u898b\u308b &#x27a1;<\/a>\n<\/p>\n<div style=\"height: 20px;\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E3%82%88%E3%81%8F%E3%81%82%E3%82%8B%E8%B3%AA%E5%95%8F%EF%BC%88Q_A%EF%BC%89\"><\/span><span class=\"ez-toc-section\" id=\"exo-faq\"><\/span>\u3088\u304f\u3042\u308b\u8cea\u554f\uff08Q&amp;A\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Q_Exchange_Online%E3%81%AF%E5%A5%91%E7%B4%84%E3%81%99%E3%82%8B%E3%81%A0%E3%81%91%E3%81%A7%E5%AE%89%E5%85%A8%E3%81%A7%E3%81%99%E3%81%8B%EF%BC%9F\"><\/span>Q. Exchange Online\u306f\u5951\u7d04\u3059\u308b\u3060\u3051\u3067\u5b89\u5168\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A. \u6700\u4f4e\u9650\u306e\u30a6\u30a4\u30eb\u30b9\u30fb\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\u306f\u6a19\u6e96\u3067\u50cd\u304d\u307e\u3059\u304c\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56\uff08SPF\u30fbDKIM\u30fbDMARC\uff09\u3068\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u306f\u5225\u9014\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u306e2\u3064\u306f\u8ffd\u52a0\u8cbb\u7528\u306a\u3057\u3067\u3067\u304d\u308b\u305f\u3081\u3001\u307e\u305a\u6700\u512a\u5148\u3067\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Q_%E5%A4%9A%E8%A6%81%E7%B4%A0%E8%AA%8D%E8%A8%BC%EF%BC%88MFA%EF%BC%89%E3%81%AF%E7%84%A1%E6%96%99%E3%81%A7%E4%BD%BF%E3%81%88%E3%81%BE%E3%81%99%E3%81%8B%EF%BC%9F\"><\/span>Q. \u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u306f\u7121\u6599\u3067\u4f7f\u3048\u307e\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A. \u306f\u3044\u3002Microsoft 365\u306e\u3069\u306e\u30d7\u30e9\u30f3\u3067\u3082\u8ffd\u52a0\u8cbb\u7528\u306a\u304f\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u7ba1\u7406\u753b\u9762\u306e\u300c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u65e2\u5b9a\u5024\u300d\u3092\u6709\u52b9\u306b\u3059\u308c\u3070\u3001\u5168\u30e6\u30fc\u30b6\u30fc\u306b\u4e00\u62ec\u3067\u9069\u7528\u3067\u304d\u307e\u3059\u3002&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Q_Microsoft_Defender_for_Office_365%E3%81%AF%E5%BF%85%E3%81%9A%E5%BF%85%E8%A6%81%E3%81%A7%E3%81%99%E3%81%8B%EF%BC%9F\"><\/span>Q. Microsoft Defender for Office 365\u306f\u5fc5\u305a\u5fc5\u8981\u3067\u3059\u304b\uff1f<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A. \u5fc5\u9808\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u5de7\u5999\u306a\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3084\u672a\u77e5\u306e\u30a6\u30a4\u30eb\u30b9\u4ed8\u304d\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3078\u306e\u5099\u3048\u3068\u3057\u3066\u5f37\u304f\u63a8\u5968\u3055\u308c\u307e\u3059\u3002\u4e2d\u5c0f\u4f01\u696d\u306f\u30d7\u30e9\u30f31\u304c\u542b\u307e\u308c\u308bBusiness Premium\u3092\u9078\u3076\u3068\u3001\u8ffd\u52a0\u8cfc\u5165\u306a\u3057\u3067\u5229\u7528\u3067\u304d\u307e\u3059\u3002&nbsp;<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Q_%E8%A8%AD%E5%AE%9A%E3%82%92%E8%87%AA%E7%A4%BE%E3%81%A0%E3%81%91%E3%81%A7%E8%A1%8C%E3%81%86%E3%81%AE%E3%81%8C%E4%B8%8D%E5%AE%89%E3%81%A7%E3%81%99%E3%80%82\"><\/span>Q. \u8a2d\u5b9a\u3092\u81ea\u793e\u3060\u3051\u3067\u884c\u3046\u306e\u304c\u4e0d\u5b89\u3067\u3059\u3002<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>A. SPF\u30fbDKIM\u30fbDMARC\u306fDNS\u8a2d\u5b9a\u306e\u30df\u30b9\u304c\u30e1\u30fc\u30eb\u4e0d\u9054\u306b\u3064\u306a\u304c\u308b\u305f\u3081\u3001\u4e0d\u5b89\u306a\u5834\u5408\u306f\u5c02\u9580\u5bb6\u306b\u78ba\u8a8d\u3057\u306a\u304c\u3089\u9032\u3081\u308b\u306e\u304c\u5b89\u5168\u3067\u3059\u3002\u30a2\u30fc\u30c7\u30f3\u30c8\u3067\u306f\u8a2d\u5b9a\u72b6\u6cc1\u306e\u78ba\u8a8d\u304b\u3089\u88dc\u52a9\u91d1\u6d3b\u7528\u307e\u3067\u3054\u652f\u63f4\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u304a\u6c17\u8efd\u306b\u3054\u76f8\u8ac7\u304f\u3060\u3055\u3044\u3002&nbsp;<\/p>\n<p align=\"center\"><a href=\"https:\/\/ardent.jp\/ict-soudanshitu-form\/\" class=\"q_button bt_red\">\u304a\u554f\u5408\u305b\u306f\u3053\u3061\u3089&#x27a1;<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Exchange Online\uff08Microsoft 365\u306e\u30e1\u30fc\u30eb\uff09\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u4e2d\u5c0f\u4f01\u696d\u5411\u3051\u306b\u89e3\u8aac\u3002\u6a19\u6e96\u6a5f\u80fdEOP\u3067\u5b88\u308c\u308b\u7bc4\u56f2\u3068\u3001\u306a\u308a\u3059\u307e\u3057\u5bfe\u7b56SPF\u30fbDKIM\u30fbDMARC\u3001\u591a\u8981\u7d20\u8a8d\u8a3c\u3001Microsoft Defender\u3001DLP\u306a\u3069\u8ffd\u52a0\u3059\u3079\u304d\u5bfe\u7b56\u3092\u512a\u5148\u9806\u4f4d\u3064\u304d\u3067\u7d39\u4ecb\u3057\u307e\u3059\u3002","protected":false},"author":11,"featured_media":25618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[110,49],"class_list":["post-25622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-google-microsoft","tag-microsoft365","tag-49"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-content\/uploads\/2026\/06\/exo_1.png","_links":{"self":[{"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/posts\/25622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/comments?post=25622"}],"version-history":[{"count":1,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/posts\/25622\/revisions"}],"predecessor-version":[{"id":25623,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/posts\/25622\/revisions\/25623"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/media\/25618"}],"wp:attachment":[{"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/media?parent=25622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/categories?post=25622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ardent.jp\/rentoffice-consultation-center\/wp-json\/wp\/v2\/tags?post=25622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}