I use AT&T and they removed the port 25 block on request. In my experience, they do not enforce any policies regarding self-hosting. I think they have boilerp

I use AT&T and they removed the port 25 block on request. In my experience, they do not enforce any policies regarding self-hosting. I think they have boilerplate that they would use if one were to continuously saturate their upstream, but I've never seen them doing anything to affect my personal services.