Self hosting SMTP servers is downright impossible these days. The big Google, Yahoo, Microsoft, and others "fight spam" / competition by black listing little

Self hosting SMTP servers is downright impossible these days. The big Google, Yahoo, Microsoft, and others "fight spam" / competition by black listing little known SMTP servers. If you try to do it from a VPS, they have usually blocked entire segments of the companies IPs. (Because someone, a lot of someones came before you) There are good reasons to right spam. But the efforts of the biggie names are forcing people to use their services. (Its free after all right)