I'm on postfix / dovecot / spamassassin. One issue after I moved boxes & IPs at OVH is that Microsoft refused to accept mail from my new IP no matter what I tr

I'm on postfix / dovecot / spamassassin. One issue after I moved boxes & IPs at OVH is that Microsoft refused to accept mail from my new IP no matter what I tried. Everyone else is fine. So I have to relay live/hotmail destinations via another jump on a VPS I have.