On Mon, March 11, 2013 14:01, Les Mikesell wrote:

On the other hand, if you do 'normal' things with sendmail, all you have to do is tweak a few values in the provided sendmail.mc and restart to rebuild the configs, and if you do anything unusual you can drop in MimeDefang as a milter and gain complete control of all of the internal steps in a small snippet of perl.

Could not be any simpler then the way you put it. Which is why I suggest starting out with Postfix for first time MTA admins.