I had the same problem. Also, I had some DKIM and SPF already configured to external SMTP server. I understand your message, but it is not clear in Mail-in-a-B

I had the same problem. Also, I had some DKIM and SPF already configured to external SMTP server. I understand your message, but it is not clear in Mail-in-a-Box interface. What exactly is the problem with my own DNS server? If I want to work without DANE, I can just add all these new records to my DNS and it works out of the box? I started to setup a personal email server several times and abandoned it because it is just too difficult. This time, it was easy. Thanks!