So I have this clean /24. Had it since the dialup days. Never a spam complaint. Never a blacklisted host. And suddenly one of the big email providers decides half my space is "poor reputation". The young people with their cloud nonsense tell me "just rotate IPs" as if that is how any of this works. I have been watching lists for thirty years. Something changed in the last two years. The algorithms do not behave like they claim. More snake oil than substance these days. Just my thoughts...