{"id":1063,"date":"2023-04-11T10:00:41","date_gmt":"2023-04-11T01:00:41","guid":{"rendered":"https:\/\/m365jp.xyz\/?p=1063"},"modified":"2023-04-11T10:05:44","modified_gmt":"2023-04-11T01:05:44","slug":"servicerestored-ex539594-exchange-online-users-are-unable-to-send-outbound-email-messages-in-exchange-online","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2023-04-11-servicerestored-ex539594-exchange-online-users-are-unable-to-send-outbound-email-messages-in-exchange-online","title":{"rendered":"[serviceRestored] EX539594 | Exchange Online | Users are unable to send outbound email messages in Exchange Online"},"content":{"rendered":"
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EX539594 | Exchange Online | Users are unable to send outbound email messages in Exchange Online<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n\n
Status<\/th>\nserviceRestored<\/td>\n<\/tr>\n
Classification<\/th>\nincident<\/td>\n<\/tr>\n
User Impact<\/th>\nUsers are unable to send outbound email messages in Exchange Online.<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/11\/2023 00:24:49<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/10\/2023 09:00:00<\/td>\n<\/tr>\n
End Time<\/th>\n04\/10\/2023 18:45:00<\/td>\n<\/tr>\n
Latest Message<\/th>\nTitle: Users are unable to send outbound email messages in Exchange Online<\/p>\n

User impact: Users are unable to send outbound email messages in Exchange Online.<\/p>\n

More info: Impact was specific to sending email messages to addresses outside of their organization. Email messages sent to other users within the organization weren’t impacted.<\/p>\n

Users saw the following within the NDR message: “Remote server returned ‘550 5.7.705 Access denied, tenant has exceeded threshold”<\/p>\n

Affected users would have encountered this issue in all Exchange Online connection methods.<\/p>\n

Final status: We’ve confirmed through user feedback and internal telemetry monitoring of NDR occurrences that disabling the problematic anti-spam rule has resolved the issue.<\/p>\n

Scope of impact: Some users attempting to send email messages to users outside of their organization may have been impacted.<\/p>\n

Start time: Monday, April 10, 2023, at 9:00 AM UTC<\/p>\n

End time: Monday, April 10, 2023, at 6:45 PM UTC<\/p>\n

Root cause: A recently updated anti-spam rules wasn’t processing or evaluating email data as expected, resulting in impact.<\/p>\n

Next steps:
– We’re reviewing our anti-spam rule update processes and testing procedures to help prevent problems like this in the future prior to implementation.
– We’re additionally evaluating telemetry indicators, such as NDR increases, to better detect problems like this.<\/p>\n

This is the final update for the event.<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\u30bf\u30a4\u30c8\u30eb: \u30e6\u30fc\u30b6\u30fc\u304c Exchange Online \u3067\u9001\u4fe1\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u306a\u3044<\/p>\n

\u30e6\u30fc\u30b6\u3078\u306e\u5f71\u97ff: \u30e6\u30fc\u30b6\u304c Exchange Online \u3067\u9001\u4fe1\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3067\u304d\u306a\u3044\u3002<\/p>\n

\u8a73\u7d30\u60c5\u5831: \u5f71\u97ff\u306f\u3001\u7d44\u7e54\u5916\u306e\u30a2\u30c9\u30ec\u30b9\u306b\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u306b\u56fa\u6709\u3067\u3057\u305f\u3002\u7d44\u7e54\u5185\u306e\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u9001\u4fe1\u3055\u308c\u305f\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u5f71\u97ff\u3092\u53d7\u3051\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n

\u30e6\u30fc\u30b6\u30fc\u306b\u306f\u3001NDR \u30e1\u30c3\u30bb\u30fc\u30b8\u5185\u306b “\u30ea\u30e2\u30fc\u30c8 \u30b5\u30fc\u30d0\u30fc\u304c ‘550 5.7.705 \u30a2\u30af\u30bb\u30b9\u62d2\u5426\u3092\u8fd4\u3057\u307e\u3057\u305f\u3002\u30c6\u30ca\u30f3\u30c8\u304c\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u307e\u3057\u305f” \u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u3092\u53d7\u3051\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u3059\u3079\u3066\u306e Exchange Online \u63a5\u7d9a\u65b9\u6cd5\u3067\u3053\u306e\u554f\u984c\u306b\u906d\u9047\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u6700\u7d42\u72b6\u614b: \u30e6\u30fc\u30b6\u30fc \u30d5\u30a3\u30fc\u30c9\u30d0\u30c3\u30af\u3068 NDR \u767a\u751f\u306e\u5185\u90e8\u30c6\u30ec\u30e1\u30c8\u30ea\u76e3\u8996\u3092\u901a\u3058\u3066\u3001\u554f\u984c\u306e\u3042\u308b\u30b9\u30d1\u30e0\u5bfe\u7b56\u30eb\u30fc\u30eb\u3092\u7121\u52b9\u306b\u3059\u308b\u3053\u3068\u3067\u554f\u984c\u304c\u89e3\u6c7a\u3057\u305f\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u5f71\u97ff\u306e\u7bc4\u56f2: \u7d44\u7e54\u5916\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u96fb\u5b50\u30e1\u30fc\u30eb \u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3057\u3088\u3046\u3068\u3059\u308b\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u5f71\u97ff\u3092\u53d7\u3051\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

\u958b\u59cb\u6642\u9593:2023\u5e744\u670810\u65e5\u6708\u66dc\u65e5\u5348\u524d9:00 UTC<\/p>\n

\u7d42\u4e86\u6642\u523b: 2023 \u5e74 4 \u6708 10 \u65e5\u6708\u66dc\u65e5\u3001\u5348\u5f8c 6 \u6642 45 \u5206 (UTC)<\/p>\n

\u6839\u672c\u539f\u56e0: \u6700\u8fd1\u66f4\u65b0\u3055\u308c\u305f\u30b9\u30d1\u30e0\u5bfe\u7b56\u30eb\u30fc\u30eb\u304c\u96fb\u5b50\u30e1\u30fc\u30eb \u30c7\u30fc\u30bf\u3092\u671f\u5f85\u3069\u304a\u308a\u306b\u51e6\u7406\u307e\u305f\u306f\u8a55\u4fa1\u3057\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u5f71\u97ff\u304c\u751f\u3058\u307e\u3057\u305f\u3002<\/p>\n

\u6b21\u306e\u30b9\u30c6\u30c3\u30d7:
– \u30b9\u30d1\u30e0\u5bfe\u7b56\u30eb\u30fc\u30eb\u306e\u66f4\u65b0\u30d7\u30ed\u30bb\u30b9\u3068\u30c6\u30b9\u30c8\u624b\u9806\u3092\u898b\u76f4\u3057\u3066\u3001\u5b9f\u88c5\u524d\u306b\u3053\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u4eca\u5f8c\u9632\u6b62\u3057\u3066\u3044\u307e\u3059\u3002
– \u3053\u306e\u3088\u3046\u306a\u554f\u984c\u3092\u3088\u308a\u9069\u5207\u306b\u691c\u51fa\u3059\u308b\u305f\u3081\u306b\u3001NDR \u306e\u5897\u52a0\u306a\u3069\u306e\u30c6\u30ec\u30e1\u30c8\u30ea \u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u30fc\u3092\u8ffd\u52a0\u3067\u8a55\u4fa1\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n

\u3053\u308c\u306f\u3001\u30a4\u30d9\u30f3\u30c8\u306e\u6700\u7d42\u66f4\u65b0\u3067\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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