Launched
Microsoft Teams
Worldwide (Standard Multi-Tenant)
General Availability
Android
Desktop
iOS
Mac
Web
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
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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