After managing my own email server for many, many years i finally decided that it was completely pointless..
Since the inception of gmail i haven't used my own @sphene.net addresses anyway, so i moved all of my domains which had mail services to google apps. (ie. poul.at, poul.name, sphene.net, yourhell.com)

No more 100-items long mail queue, no more getting black-listed because my server got hacked and used to send spam, etc.