I've updated my Courier-MTA and Courier-Authlib ports, linked below. Please take a look and consider committing them, or let me know what I should change to make them commit-worthy.
It currently creates user/group _courier, ID 601, but I'd be happy to change that to an "official" one. http://shockley.net/OpenBSD/courier-authlib-0.57-port.tgz http://shockley.net/OpenBSD/courier-0.50.1-port.tgz
