This isn’t Microsoft’s announcement. They announced over a month ago. This also only affects bulk senders sending over 5,000 emails a day inbound to their Hotmail/Outlook.com service.
And if you can’t send DMARC-compliant emails in 2025, frankly you deserve to be blocked.
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So … this article published today, 5 May 2025, says that the Microsoft policy will start on 5 May 2025.
Some questions:
This isn’t Microsoft’s announcement. They announced over a month ago. This also only affects bulk senders sending over 5,000 emails a day inbound to their Hotmail/Outlook.com service.
And if you can’t send DMARC-compliant emails in 2025, frankly you deserve to be blocked.