My @mac.com email is going to recipients junk folder

Today. 3/18/22 email sent from my @Mac.com email address is going to the recipients junk mail folder. This is happening to most people I've sent to both new people and people I have emailed many times.

I work in film production and this is a major issue for me, please help.

I have tested that if I send it from using @iCloud.com it goes through. But my I don't have an @iCloud.com account. My Apple ID is @Mac.com