What is the main differences between Postfix and Qmail?<BR><BR>Why would you choose one over the other?<BR><BR>Hopefully this won't turn into a flaming war. I would like a intelligent discussion about ...

Recently one of our servers was upgraded and we moved from using Sendmail to using Qmail. I have googled and looked at the various Qmail howto sites but non of them can explain in terms I can ...