On 06.04.2012, Joe Zeff wrote:
I have, a few times, considered setting up a mailserver of my own for my domain so that even when I was away from home all mail went through it. Every time I have, I've decided against it for exactly that reason. If more people did the same, we'd not have as many open relays spamming the world.
Setting up a mailserver is not a real problem, all the "big" mailservers come with good documentation. However, they are complex beasts, and "time" seems to be the real important factor. Getting blacklisted because you build an open relay is stupid, but nothing changes practice more and faster than adverse anecdote :-)