The only thing you need to do to cc:Mail is to create a post office for PMDF so people can send mail to it.
184.108.40.206 Creating a PMDF Post Office in cc:Mail
You need to establish a cc:Mail post office for PMDF. Your cc:Mail
users will normally send mail to PMDF by addressing their messages to
this post office. Messages to PMDF are then exported from this post
office with the cc:Mail Import/Export utility.
We shall use the name PMDF for this post office in our setup, but you
can use any name you want. Using the cc:Mail ADMIN utility, enter
PMDF as the name, and enter
P for post office
for its location. No cc:Mail address is needed.