Using the New Outlook for Mac features in business environments
Bad answer!!! WRONG answer!!!
It has something to do with DMARC!!!
4 months have turned into 5 months. I changed my dmarc in my outlook. had to buy monthly subscription from DMARC. Had to work with GoDaddy because they host my Microsoft email for my business.
This has been very frustrating and extremely time consuming for just the basic receive emails.
Still no answers from Microsoft that have even touched on an accurate solution