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MCP Documentation

Microsoft Teams: Tenant-Owned Domain Impersonation Protection for Teams Messaging

Roadmap ID
526780
View in M365 Roadmap
Product
Microsoft Teams
Published
November 11, 2025
Status
Launched
Cloud Instance
Worldwide (Standard Multi-Tenant)
Release Phase
General Availability
Platforms
AndroidDesktopiOSMacWeb
Expected Release
December 2025

Description

Identify if an external user comes from a domain that is impersonating the recipient tenant's own domains, during their initial contact with an enterprise user via Teams messages.

Change History

Show
Published: November 11, 2025
Last Updated: December 11, 2025
December 11, 2025 at 2:00 AM Updated
Status
Previous
Rolling out
New
Launched
Modified Date
Previous
2025-12-03T00:15:38.000Z
New
2025-12-11T00:00:03.000Z
December 3, 2025 at 2:00 AM Updated
Status
Previous
In development
New
Rolling out
Modified Date
Previous
2025-11-11T00:15:41.000Z
New
2025-12-03T00:15:38.000Z

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