check before: 2022-06-01
Defender, Defender for Office 365, Exchange, Microsoft 365 Defender, Microsoft Defender for Office 365, SharePoint
Online, US Instances, Web, World tenant
Feature update, Admin impact
Email senders use authentication mechanisms like SPF, DKIM, DMARC to authenticate emails, but some legitimate intermediate services may potentially make changes to the email, which might cause the email to fail authentication at subsequent hop. Authenticated Received Chain (ARC) is an authentication mechanism that helps preserve authentication results across intermediaries. With this change, admins will be able to add trusted intermediaries in the Microsoft 365 Defender portal to allow Microsoft to honor these ARC signatures, thereby allowing legitimate messages.
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|2022-06-16||RM Status||In development||Rolling out|
|2022-06-08||RM Cloud Instance Tags||Worldwide (Standard Multi-Tenant)||GCC High, Worldwide (Standard Multi-Tenant), GCC, DoD|
|2022-06-07||RM Release||April CY2022||June CY2022|
*starting April 2022
Last updated 2 weeks ago