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mediumDefenderMicrosoft Defender for Office 365updatelink_discovery · Aug 29, 2026

[Docs] Message trace in the Microsoft Defender portal

The Microsoft Defender portal now includes message trace functionality to help troubleshoot outbound sending limits in Exchange Online, enhancing threat detection and email security management.

“Linked from "Troubleshoot outbound sending limits in Exchange Online - Microsoft Defender for Office 365": Message trace in the Microsoft Defender portal”
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Security
threat_protectionendpoint_securitycloud_security
Audience
security_engineeradmin
Environment
cloud
Ontology Topics
AZ-500SC-300
Classification confidence: 95%
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[Docs] Message trace in the Microsoft Defender portal | 365Forge