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MC543870 – (Updated) Microsoft Defender for Office 365: DMARC Handling (archived)

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check before: 2023-05-04

Product:

Defender, Defender for Office 365, Microsoft 365 Defender

Platform:

US Instances, Web, World tenant

Status:

Launched

Change type:

Feature update, User impact, Admin impact

Links:

117533

Details:

Updated April 27, 2023: We are not proceeding with this rollout at this time and will communicate via Message center when we are ready to proceed. Thank you for your feedback.
In order to better protect our customers from exact domain spoofing attacks and improve deliverability of email, we are making changes to how we handle DMARC p=reject and p=quarantine.

For the enterprise customers, we are also making updates to how DMARC policy-based reject can be handled. This change will help Security Administrators be able to choose how DMARC policy-based reject and quarantine can be applied within their organization.

For the consumer service, this means that if an email fails DMARC validation, it will be dropped and will not be delivered to the recipient's inbox. This change will help to ensure that only emails from verified senders are delivered to our customers' inboxes.
This message is associated with Microsoft 365 Roadmap ID 117533

[When this will happen:]

We will communicate via Message center when we are ready to proceed.

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:
General Availability

Created:
2023-04-20

updated:
2023-04-28

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changes*

DatePropertyoldnew
2023-04-28MC MessagesIn order to better protect our customers from exact domain spoofing attacks and improve deliverability of email, we are making changes to how we handle DMARC p=reject and p=quarantine.

For the enterprise customers, we are also making updates to how DMARC policy-based reject can be handled. This change will help Security Administrators be able to choose how DMARC policy-based reject and quarantine can be applied within their organization.

For the consumer service, this means that if an email fails DMARC validation, it will be dropped and will not be delivered to the recipient's inbox. This change will help to ensure that only emails from verified senders are delivered to our customers' inboxes.
This message is associated with Microsoft 365 Roadmap ID 117533

[When this will happen:]

Standard: Rollout will begin in late April 2023 and is expected to be complete by mid-May 2023.
Gov Cloud: Rollout will begin in mid-April 2023 and is expected to be complete by mid-June 2023.
Updated April 27, 2023: We are not proceeding with this rollout at this time and will communicate via Message center when we are ready to proceed. Thank you for your feedback.
In order to better protect our customers from exact domain spoofing attacks and improve deliverability of email, we are making changes to how we handle DMARC p=reject and p=quarantine.

For the enterprise customers, we are also making updates to how DMARC policy-based reject can be handled. This change will help Security Administrators be able to choose how DMARC policy-based reject and quarantine can be applied within their organization.

For the consumer service, this means that if an email fails DMARC validation, it will be dropped and will not be delivered to the recipient's inbox. This change will help to ensure that only emails from verified senders are delivered to our customers' inboxes.
This message is associated with Microsoft 365 Roadmap ID 117533

[When this will happen:]

We will communicate via Message center when we are ready to proceed.
2023-04-28MC TitleMicrosoft Defender for Office 365: DMARC Handling(Updated) Microsoft Defender for Office 365: DMARC Handling
2023-04-28MC Last Updated04/20/2023 02:02:302023-04-27T23:09:34Z
2023-04-28MC End Time07/24/2023 09:00:002023-05-04T09:00:00Z

*starting April 2022

Last updated 9 months ago

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