Microsoft 365: Multi-Geo In-Region Routing

Summary

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.

Status
Launched
General availability target
Oct 2025
Preview target
Oct 2025
Products
Microsoft 365, Exchange
Clouds
Worldwide (Standard Multi-Tenant)
Release phases
General Availability, Preview
Platforms
Desktop, Mac, Web
Added to the roadmap
6 Aug 2024
Last changed
14 Jan 2026 · 8mo ago
recently changed
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