Using your own domain for email is harder than it should be. If it’s not a major provider like gmail you often immediately get flagged for fraud. So far two accounts have locked me out for no reason other than not using gmail. #selfhosted

@figmnt

Have you set up spf, domain keys, dmarc etc on your domain?

Yup! Delivery actually seems fine, it’s just random sites keep banning my account for just existing. I’ve had to go to support for both where they unbanned me.
@figmnt if you're not using a fixed commercial ip, it could be they're using "dialup" ip block lists which contain consumer isp dynamic ip address pools? I came unstuck with this once when I used to host my own smtp server for outbound email. Of course it might just be spamhaus took a dislike to you in which case good luck!