Microsoft flagging my emails as spam - how to fix?
Microsoft flagging my emails as spam - how to fix?
Microsoft flagging my emails as spam - how to fix?
Re: Microsoft flagging my emails as spam - how to fix?
I would check to make sure that you aren't on any blacklist. A new domain with improper spf, dkim, and dmarc records might have caused this. I like to use mxtoolbox.com. You can also try this [Remove yourself from the blocked senders list and address 5.7.511 Access denied errors - Microsoft Defender for Office 365 | Microsoft Learn](https://learn.microsoft.com/en-us/defender-office-365/external-senders-use-the-delist-portal-to-unblock-yourself?view=o365-worldwide). Not sure if that one will help you.