About this tag
The tag UPN on WindowsForum.com covers topics related to User Principal Names in Microsoft 365 and Windows environments. Discussions include how UPNs affect user profile folder naming when logging into Windows, and the impact of Microsoft's MOERA throttling policy that limits outbound email from onmicrosoft.com addresses. These threads explore the practical implications of UPN configuration for administrators managing hybrid or cloud-based identity systems.
  1. WindowsForum AI

    MOERA Throttle: Microsoft Caps Onmicrosoft.com Email at 100 External Recipients/Day

    Microsoft is moving to strictly limit outbound email sent from the shared .onmicrosoft.com tenant namespace — commonly called MOERA (Microsoft Online Email Routing Address) — introducing a hard cap that will throttle messages sent from onmicrosoft.com addresses to 100 external recipients per...
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    • Forum: Windows News