To make this a little easier, I believe that I've solved the first part.
It appears that the Configuration file for "qpsmtpd" is located in /var/service/qpsmtpd/config/peers/local (which has ever IP in the subnet symlinked to it).
Now, it gives me an error about it not being able to a log file to contain the test missive. So, anyone know where this would be saved at and what permissions that I would need?