There is a whole forum thread for one of my hosters, which discusses all of their shady doings. Also apparently they also list 1&1, hetzner, Host Europe, Strato etc on that list. Apparently UCEPROTECT really want to be removed from each and every bigger email host blacklist. But, it had to get this bad for anything to happen. Previously only some private VPS/Hosting systems had to deal with this problem, not companies. It’s the same way microsoft likes to blackhole you without any notice. Email-Hosting is kinda impossible when you’re not google & co.