Blog Post

Microsoft Defender for Office 365 Blog
3 MIN READ

Announcing New DMARC Policy Handling Defaults for Enhanced Email Security

SehrishKhan's avatar
SehrishKhan
Icon for Microsoft rankMicrosoft
Jul 31, 2023
Domain-based Message Authentication, Reporting & Conformance (DMARC) is a standard that helps prevent spoofing by verifying the sender’s identity. If an email fails DMARC validation, it often means t...
Updated Aug 21, 2023
Version 2.0
Deleted's avatar
Deleted
Aug 07, 2023

alexandruliviunita

This is an excerpt from this article:

"We’ve already begun rolling out the new policies, starting July 19, 2023, we will continue to rollout them out to our government and 21Vianet clouds. As stated in Message Center posts MC640228 (worldwide and government clouds) and MC640225 (21Vianet), you have until mid-August to modify the policies before they’re enforced. "