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mediumExchangetransport routingupdatelink_discovery · Jul 16, 2026
[Docs] Transport routing in Exchange hybrid deployments
Documentation update for transport routing in Exchange hybrid deployments to help resolve NDR error 5.4.6 or 5.4.14 in Exchange Online. This change helps administrators properly configure email flow between on-premises Exchange and Exchange Online environments.
“Linked from "Fix NDR error 5.4.6 or 5.4.14 in Exchange Online - Exchange": Transport routing in Exchange hybrid deployments”
View original article →Audience
admindeveloper
Environment
hybrid
Ontology Topics
MD-102
Classification confidence: 90%
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