{"id":10596,"date":"2025-03-22T07:01:28","date_gmt":"2025-03-21T22:01:28","guid":{"rendered":"https:\/\/m365jp.net\/?p=10596"},"modified":"2025-03-22T07:04:40","modified_gmt":"2025-03-21T22:04:40","slug":"servicedegradation-ex1030895-exchange-online-some-users-may-encounter-non-delivery-report-ndr-failures-when-sending-or-receiving-email-messages-36","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2025-03-22-servicedegradation-ex1030895-exchange-online-some-users-may-encounter-non-delivery-report-ndr-failures-when-sending-or-receiving-email-messages-36","title":{"rendered":"[serviceDegradation] EX1030895 | Exchange Online | Some users may encounter Non-Delivery Report (NDR) failures when sending or receiving email messages"},"content":{"rendered":"
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EX1030895 | Exchange Online | Some users may encounter Non-Delivery Report (NDR) failures when sending or receiving email messages<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceDegradation<\/td>\n<\/tr>\n
Classification<\/th>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nSome users may encounter NDR failures when sending or receiving email messages in Exchange Online.<\/td>\n<\/tr>\n
Last Updated<\/th>\n03\/21\/2025 21:52:42<\/td>\n<\/tr>\n
Start Time<\/th>\n03\/09\/2025 12:07:00<\/td>\n<\/tr>\n
End Time<\/th>\n<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Some users may encounter Non-Delivery Report (NDR) failures when sending or receiving email messages<\/p>\n

User impact: Some users may encounter NDR failures when sending or receiving email messages in Exchange Online.<\/p>\n

More info: We expect the impact to be mitigated for a majority of our users; however, we remain focused on ensuring this incident is fully resolved.<\/p>\n

Users may receive an NDR containing an error stating “554 5.6.0 Corrupt message content”.<\/p>\n

Additionally, users may intermittently receive calendar invite email messages as a plain text message containing winmail.dat attachments.<\/p>\n

Users may be able to send affected messages by attempting to resend. This may not be effective for all users.<\/p>\n

Current status: We discovered our initial fix unintentionally caused duplicate messages to be sent to external users. We stopped the initial fix and are rolling out the updated solution to our internal infrastructure to validate there is no additional impact. We\u2019ll provide an estimated deployment timeline once one becomes available. <\/p>\n

Scope of impact: Some users serviced by the impacted portion of infrastructure sending or receiving email in Exchange Online may be affected, although impact is limited to a small subset of messages.<\/p>\n

Preliminary root cause: A recent change to caching logic introduced a condition where messages with specific properties are cached, and subsequent messages containing those same cached properties are then rejected, resulting in NDR errors.<\/p>\n

Start time: Sunday, March 9, 2025, at 12:07 PM UTC<\/p>\n

Next update by: Saturday, March 22, 2025, at 10:00 PM UTC<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u53d7\u4fe1\u6642\u306b\u914d\u4fe1\u4e0d\u80fd\u30ec\u30dd\u30fc\u30c8 (NDR) \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff: \u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3001Exchange Online\u3067\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u53d7\u4fe1\u3059\u308b\u3068\u304d\u306b NDR \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u8a73\u7d30: \u5927\u591a\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5f71\u97ff\u304c\u8efd\u6e1b\u3055\u308c\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3092\u5b8c\u5168\u306b\u89e3\u6c7a\u3059\u308b\u3053\u3068\u306b\u5f15\u304d\u7d9a\u304d\u6ce8\u529b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u306f\u3001”554 5.6.0 Corrupt message content” \u3068\u3044\u3046\u30a8\u30e9\u30fc\u3092\u542b\u3080 NDR \u3092\u53d7\u3051\u53d6\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u3055\u3089\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u3001winmail.dat\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3080\u30d7\u30ec\u30fc\u30f3 \u30c6\u30ad\u30b9\u30c8 \u30e1\u30c3\u30bb\u30fc\u30b8\u3068\u3057\u3066\u3001\u4e88\u5b9a\u8868\u306e\u62db\u5f85\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u65ad\u7d9a\u7684\u306b\u53d7\u4fe1\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u518d\u9001\u4fe1\u3092\u8a66\u307f\u308b\u3053\u3068\u3067\u3001\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u6709\u52b9\u3067\u3042\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/p>\n

\u73fe\u5728\u306e\u30b9\u30c6\u30fc\u30bf\u30b9: \u6700\u521d\u306e\u4fee\u6b63\u306b\u3088\u308a\u3001\u610f\u56f3\u305b\u305a\u306b\u5916\u90e8\u30e6\u30fc\u30b6\u30fc\u306b\u91cd\u8907\u3057\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u9001\u4fe1\u3055\u308c\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u307e\u3057\u305f\u3002\u6700\u521d\u306e\u4fee\u6b63\u3092\u505c\u6b62\u3057\u3001\u66f4\u65b0\u3055\u308c\u305f\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u5185\u90e8\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306b\u5c55\u958b\u3057\u3066\u3001\u8ffd\u52a0\u306e\u5f71\u97ff\u304c\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002\u30c7\u30d7\u30ed\u30a4\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30eb\u306f\u3001\u5229\u7528\u53ef\u80fd\u306b\u306a\u3063\u305f\u3089\u304a\u77e5\u3089\u305b\u3057\u307e\u3059\u3002<\/p>\n

\u5f71\u97ff\u306e\u7bc4\u56f2: Exchange Online \u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u9001\u53d7\u4fe1\u3059\u308b\u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u5f71\u97ff\u3092\u53d7\u3051\u308b\u90e8\u5206\u306b\u3088\u3063\u3066\u30b5\u30fc\u30d3\u30b9\u3092\u53d7\u3051\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5f71\u97ff\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5c0f\u3055\u306a\u30b5\u30d6\u30bb\u30c3\u30c8\u306b\u9650\u5b9a\u3055\u308c\u307e\u3059\u3002<\/p>\n

\u66ab\u5b9a\u7684\u306a\u6839\u672c\u539f\u56e0: \u30ad\u30e3\u30c3\u30b7\u30e5 \u30ed\u30b8\u30c3\u30af\u306e\u6700\u8fd1\u306e\u5909\u66f4\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u6301\u3064\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u3001\u540c\u3058\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u542b\u3080\u5f8c\u7d9a\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u62d2\u5426\u3055\u308c\u3001NDR \u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u3044\u3046\u6761\u4ef6\u304c\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u958b\u59cb\u6642\u9593: 2025 \u5e74 3 \u6708 9 \u65e5 (\u65e5) 12:07 PM UTC<\/p>\n

\u6b21\u306e\u66f4\u65b0\u8005: 2025\u5e743\u670822\u65e5(\u571f)\u5348\u5f8c10:00 UTC<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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