[eigengrau]

> hard not to wind up on spam lists almost impossible to be removed from

I’ve been running my own infrastructure for years now and know various people that do this also. Not once have I heard about anyone winding up on a blacklist. The only way I could imagine that happening is either a new server inheriting a legacy IP with bad reputation, or possibly running your server inside a home ISP network, which are frequently rejected by MTAs. Is there any other way in your opinion?