85684 – Microsoft Defender for Office 365: Exchange Online Protection- Customizable Authenticated Received Chain (ARC) configuration

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check before: 2022-03-01

Product:

Defender, Exchange, Microsoft 365 Defender, Microsoft Defender for Office 365

Platform:

Online, Web, World tenant

Status:

In development

Change type:

Feature update, Admin impact

Links:

Details:

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.

Change Category:
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Scope:
XXXXXXX ...

Release Phase:
General Availability

Created:
2021-10-15

updated:
2021-10-15

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