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mediumExchangeDynamic Distribution Groupsupdatem365_message_center · Jul 8, 2026
Exchange Online will prevent creation of duplicate Dynamic Distribution Groups
Exchange Online will now prevent the creation of duplicate Dynamic Distribution Groups to reduce administrative overhead and improve reliability. This change helps maintain cleaner mail management configurations.
“Services: Exchange Online. <p><b>[What and Why:]</b></p><p> We are introducing a reliability improvement to <b>Dynamic Distribution Groups (DDGs)</b> in Exchange Online. To prevent unnecessary duplication and reduce administrative overhead, Exchange Online will block the creation of new DDGs that are <b>exact </b>dup…”
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admin
Environment
cloud
Classification confidence: 95%
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