{"id":15785,"date":"2026-04-07T08:01:33","date_gmt":"2026-04-06T23:01:33","guid":{"rendered":"https:\/\/m365jp.net\/?p=15785"},"modified":"2026-04-07T08:06:28","modified_gmt":"2026-04-06T23:06:28","slug":"mc1272554-top-domain-mail-flow-report-in-exchange-online-is-retiring","status":"publish","type":"post","link":"https:\/\/m365jp.net\/index.php\/2026-04-07-mc1272554-top-domain-mail-flow-report-in-exchange-online-is-retiring","title":{"rendered":"MC1272554 | Top domain mail flow report in Exchange Online is retiring"},"content":{"rendered":"
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MC1272554 | Top domain mail flow report in Exchange Online is retiring<\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\n\n\n\n\n\n\n\n\n
Classification<\/th>\nplanForChange<\/td>\n<\/tr>\n
Last Updated<\/th>\n04\/06\/2026 22:06:24<\/td>\n<\/tr>\n
Start Time<\/th>\n04\/06\/2026 22:06:03<\/td>\n<\/tr>\n
End Time<\/th>\n08\/31\/2026 07:00:00<\/td>\n<\/tr>\n
Action Required By Date<\/th>\n2026-07-05T07:00:00Z<\/td>\n<\/tr>\n
Message Content<\/th>\n\n

[Introduction]<\/b><\/p>\n

We\u2019re retiring the Top domain mail flow report<\/b> in the Exchange admin center (EAC) in WW. <\/i>This change is part of our ongoing work to streamline and modernize mail flow reporting in Exchange Online<\/i>, helping admins consolidate workflows and adopt more flexible reporting options.<\/p>\n

[When this will happen]<\/b><\/p>\n

The Top domain mail flow report will be retired on July 6, 2026<\/b>.<\/p>\n

[How this affects your organization]<\/b><\/p>\n

Who is affected<\/i><\/p>\n

    \n
  • Admins who use the Top domain mail flow report in the Exchange admin center (EAC) in WW. <\/i><\/li>\n<\/ul>\n

    What will happen<\/i><\/p>\n

      \n
    • The Top domain mail flow report will no longer be accessible in EAC<\/b> after July 6, 2026.<\/li>\n
    • Any workflows that rely on this report for troubleshooting, monitoring, or reporting will need to transition to an alternative reporting method.<\/li>\n
    • No other Exchange Online mail flow reports are impacted by this change.<\/li>\n
    • This retirement does not <\/b>change mail delivery behavior or message routing.<\/li>\n<\/ul>\n

      [What you can do to prepare]<\/b><\/p>\n

        \n
      • Update internal documentation, runbooks, and bookmarks that reference the Top domain mail flow report.<\/li>\n
      • Capture any baseline metrics you need before July 6, 2026<\/b>.<\/li>\n
      • Validate an alternative workflow for identifying top sender and recipient domains.<\/li>\n
      • Review Exchange Online reporting options to ensure your organization has the tools needed to support ongoing mail flow analysis.<\/li>\n<\/ul>\n

        [Compliance considerations]<\/b><\/p>\n

        No compliance considerations identified. Review as appropriate for your organization.<\/p>\n<\/td>\n<\/tr>\n

Machine Translation<\/th>\n\n

[\u306f\u3058\u3081\u306b]<\/b><\/p>\n

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[\u3044\u3064\u8d77\u3053\u308b\u304b]<\/b><\/p>\n

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