Emails released from Quarantine not delivering to Inbox

I had a similar issue with Microsoft 365. In my case, the emails were being released from quarantine but were still getting caught by another mail flow rule or spam filter. I’d check the message trace first to see exactly what happened to the email after it was released. That usually helps pinpoint whether it’s a filtering or delivery issue.

I hit the same issue today. Two released messages, neither has been delivered. What's worse, these are MFA messages FROM MICROSOFT!!!!  Microsoft is quarantining their own MFA messages!

This is the type of unacceptable garbage that is getting people beyond frustrated with Microsoft. This stuff used to work much better, but Microsoft seems bent on breaking the things that work while shoveling out more and more garbage. Sorry, my honest opinion of where Microsoft is right now.

Stewart3 

To my experience, it take ONE day for the message release back to Inbox