Thanks. From everything I have read, the project seems to have most if not all of the features I am looking for already. It is also modular so I shouldn't have to carry the overhead of the features that I am not interested in using. I appreciate this as footprint size and process efficiency may eventually become my biggest concerns.
An earlier conversation here suggested that formal support for SMTP servers running on multiple ports might be a desirable area for future development. But I have dropped that conversation for the moment while I struggle with the encrypted single port scenario (TLS on 465).
Once I have all of that running, I was going to look into what modules the project has for Web-mail.
I eventually want to write some custom modules for mail filtering, but I'm obviously not there yet.
From Dwayne Nelson:
So, I guess my want list would be:
 speed/footprint enhancements
 formal support for multiple ports
 Web mail modules (if it doesn't already exist), and
 additional support for customized mail handling