I’m not sending my mails from bitfolk, but from my own IPs, and for what
I’m aware of, gmail and yahoo are reachable once SPF and DKIM is
correct.
But for MS, it’s impossible. I’m a the point where I stopped trying, I’m
just not reaching them whatever I do. So when I have to write to someone
hosted by them, I ask for a different email address.
--
Alarig