This is a new domain on an IP that was fairly recently assigned to it. All main email providers blacklist anything that is not gmail, outlook or aws by default. Nothing I can do about it, other than becoming part of the problem and paying them to host this instance’s email.
You’re right. I’ve tried sending an email and it arrives to my personal server, but gmail outright refuses to even accept it. Will have a look on how to solve it.
Thanks for your reply, so it’s a gmail issue after all :/