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Launched

Microsoft 365: Multi-Geo In-Region Routing

Why it matters: In preview

What to do: Using IRR, customers can set the geo-region that inbound mail should be routed to for specific Accepted Domains.

Multi-Geo In-Region Routing (IRR) enables customers to control the routing of inbound emails. Using IRR, customers can set the geo-region that inbound mail should be routed to for specific Accepted Domains.

Target October CY2025Cloud WorldwidePlatform Desktop, Mac, WebSource updated 2026-01-14

Affected: Microsoft 365, Exchange

View at Microsoft →