{"id":15864,"date":"2026-04-11T02:01:22","date_gmt":"2026-04-10T17:01:22","guid":{"rendered":"https:\/\/m365jp.net\/?p=15864"},"modified":"2026-04-11T02:06:33","modified_gmt":"2026-04-10T17:06:33","slug":"falsepositive-ex1276049-exchange-online-users-email-messages-are-being-delivered-in-exchange-online-but-senders-may-receive-incorrect-non-delivery-reports","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-11-falsepositive-ex1276049-exchange-online-users-email-messages-are-being-delivered-in-exchange-online-but-senders-may-receive-incorrect-non-delivery-reports","title":{"rendered":"[falsePositive] EX1276049 | Exchange Online | Users&#8217; email messages are being delivered in Exchange Online but senders may receive incorrect non\u2011delivery reports"},"content":{"rendered":"<div class=\"postie-post\">\n<div>\n<hr>\n<table id=\"section\">\n<tbody>\n<tr>\n<th width=\"95%\">EX1276049 | Exchange Online | Users&#8217; email messages are being delivered in Exchange Online but senders may receive incorrect non\u2011delivery reports<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<table id=\"data\">\n<tbody>\n<tr>\n<th>Status<\/th>\n<td class=\"bad\">falsePositive<\/td>\n<\/tr>\n<tr>\n<th>Classification<\/th>\n<td>advisory<\/td>\n<\/tr>\n<tr>\n<th>User Impact<\/th>\n<td>Users&#8217; email messages are being delivered in Exchange Online but senders may receive incorrect non\u2011delivery reports.<\/td>\n<\/tr>\n<tr>\n<th>Last Updated<\/th>\n<td>04\/10\/2026 16:16:27<\/td>\n<\/tr>\n<tr>\n<th>Start Time<\/th>\n<td>04\/10\/2026 12:15:32<\/td>\n<\/tr>\n<tr>\n<th>End Time<\/th>\n<td>04\/10\/2026 16:15:44<\/td>\n<\/tr>\n<tr>\n<th>Latest Message<\/th>\n<td>Title: Users&#8217; email messages are being delivered in Exchange Online but senders may receive incorrect non\u2011delivery reports<\/p>\n<p>  User impact: Users&#8217; email messages are being delivered in Exchange Online but senders may receive incorrect non\u2011delivery reports.<\/p>\n<p>  More info: Senders may see delivery failures or non\u2011delivery reports (NDRs) indicating the recipient domain is unreachable, despite email messages being delivered successfully.<\/p>\n<p>  Final status: The investigation is complete and we&#8217;ve determined the service is healthy. A service incident didn&#8217;t actually occur. This communication will expire in 24 hours.<\/p>\n<p>  This is the final update for the event.<\/td>\n<\/tr>\n<tr>\n<th>Machine Translation<\/th>\n<td>\u30bf\u30a4\u30c8\u30eb:\u30e6\u30fc\u30b6\u30fc\u306e\u30e1\u30fc\u30eb\u30e1\u30c3\u30bb\u30fc\u30b8\u306fExchange Online\u3067\u914d\u4fe1\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u9001\u4fe1\u8005\u304c\u8aa4\u3063\u305f\u672a\u914d\u4fe1\u5831\u544a\u3092\u53d7\u3051\u53d6\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n<p>  \u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff:\u30e6\u30fc\u30b6\u30fc\u306e\u30e1\u30fc\u30eb\u306fExchange Online\u3067\u914d\u4fe1\u3055\u308c\u3066\u3044\u307e\u3059\u304c\u3001\u9001\u4fe1\u8005\u306f\u8aa4\u3063\u305f\u672a\u914d\u9054\u5831\u544a\u3092\u53d7\u3051\u53d6\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u8ffd\u52a0\u60c5\u5831:\u9001\u4fe1\u8005\u306f\u3001\u30e1\u30fc\u30eb\u304c\u6b63\u5e38\u306b\u914d\u4fe1\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u53d7\u4fe1\u30c9\u30e1\u30a4\u30f3\u306b\u5230\u9054\u4e0d\u80fd\u3092\u793a\u3059\u914d\u4fe1\u5931\u6557\u3084\u672a\u914d\u9054\u5831\u544a(NDR)\u3092\u76ee\u306b\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>  \u6700\u7d42\u72b6\u6cc1:\u8abf\u67fb\u306f\u5b8c\u4e86\u3057\u3001\u30b5\u30fc\u30d3\u30b9\u306f\u5065\u5168\u3067\u3042\u308b\u3068\u5224\u65ad\u3055\u308c\u307e\u3057\u305f\u3002\u5b9f\u969b\u306b\u306f\u30b5\u30fc\u30d3\u30b9\u4e8b\u6545\u306f\u767a\u751f\u3057\u3066\u3044\u307e\u305b\u3093\u3002\u3053\u306e\u9023\u7d61\u306f24\u6642\u9593\u4ee5\u5185\u306b\u671f\u9650\u5207\u308c\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>  \u3053\u308c\u304c\u30a4\u30d9\u30f3\u30c8\u306e\u6700\u7d42\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>EX1276049 | Exchange Online | Users&#8217; email messages are being delivered in Exchange Online but senders m [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-15864","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/comments?post=15864"}],"version-history":[{"count":0,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/posts\/15864\/revisions"}],"wp:attachment":[{"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/media?parent=15864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/categories?post=15864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/m365jp.net\/index.php\/wp-json\/wp\/v2\/tags?post=15864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}