Until one of the big players decides they don't like your domain or IP range. I've been running my own email/web server for years, but even if you'd fully autom

Until one of the big players decides they don't like your domain or IP range. I've been running my own email/web server for years, but even if you'd fully automate installation, there's a can of worms full of fun things like spam, DoS and shenanigans by the big players that really are not worth your time for just one person's email setup. I suppose we could come up with some easy configurable templates that would automatically install servers for privacy conscious individuals, but if at some point something goes wrong, most people are going to be stuck without service and no easy fix.