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MC640228 – (Updated) Microsoft Defender for Office 365: DMARC Policy Handling (archived)

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check before: 2023-07-27

Product:

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

Platform:

Online, US Instances, Web, World tenant

Status:

Launched

Change type:

Admin impact, Feature update, Updated message

Links:

117533

Details:

Updated August 30, 2023: We have updated the timing of when these policies will take effect. Thank you for your patience.
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 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.
This message is associated with Microsoft Roadmap ID 117533
[When this will happen:]

Standard: Rollout will begin on July 13th, 2023, and policies will take effect by late September 2023 (previously late August). Customers will have 25 days to opt out.
Gov Cloud: Rollout will begin on July 19, 2023 and policies will take effect by late September 2023 (previously late August). Customers will have 25 days to opt out.

Change Category:
XXXXXXX ...

Scope:
XXXXXXX ...

Release Phase:
General Availability

Created:
2023-07-15

updated:
2023-08-31

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changes*

DatePropertyoldnew
2023-08-31MC Last Updated08/17/2023 00:54:242023-08-30T20:53:35Z
2023-08-31MC MessagesUpdated August 16, 2023: We have updated the timing of when these policies will take effect. Thank you for your patience.
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 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.
This message is associated with Microsoft Roadmap ID 117533
[When this will happen:]

Standard: Rollout will begin on July 13th, 2023, and policies will take effect by late August 2023. Customers will have 25 days to opt out.
Gov Cloud: Rollout will begin on July 19, 2023 and policies will take effect by late August 2023. Customers will have 25 days to opt out.
Updated August 30, 2023: We have updated the timing of when these policies will take effect. Thank you for your patience.
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 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.
This message is associated with Microsoft Roadmap ID 117533
[When this will happen:]

Standard: Rollout will begin on July 13th, 2023, and policies will take effect by late September 2023 (previously late August). Customers will have 25 days to opt out.
Gov Cloud: Rollout will begin on July 19, 2023 and policies will take effect by late September 2023 (previously late August). Customers will have 25 days to opt out.
2023-08-31MC End Time10/02/2023 09:00:002023-11-06T08:00:00Z
2023-08-17MC 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 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.
This message is associated with Microsoft Roadmap ID 117533
[When this will happen:]

Standard: Rollout will begin on July 13th, 2023, and policies will take effect by August 10, 2023. Customers will have 25 days to opt out.
Gov Cloud: Rollout will begin on July 19, 2023 and policies will take effect by August 14, 2023. Customers will have 25 days to opt out.
Updated August 16, 2023: We have updated the timing of when these policies will take effect. Thank you for your patience.
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 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.
This message is associated with Microsoft Roadmap ID 117533
[When this will happen:]

Standard: Rollout will begin on July 13th, 2023, and policies will take effect by late August 2023. Customers will have 25 days to opt out.
Gov Cloud: Rollout will begin on July 19, 2023 and policies will take effect by late August 2023. Customers will have 25 days to opt out.
2023-08-17MC TitleMicrosoft Defender for Office 365: DMARC Policy Handling(Updated) Microsoft Defender for Office 365: DMARC Policy Handling
2023-08-17MC Last Updated07/13/2023 02:12:462023-08-17T00:54:24Z
2023-08-17MC MessageTagNamesFeature update, Admin impactUpdated message, Feature update, Admin impact
2023-08-17MC End Time09/14/2023 09:00:002023-10-02T09:00:00Z

*starting April 2022

Last updated 5 months ago

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