If your configuration was generated by the PMDF configuration utility, then you do not need to add a reprocessing channel to your configuration: this was done automatically for you by that utility.c See the appropriate edition of the PMDF Installation Guide for instructions on using the configuration utility.
The first step in installing a processing channel is to insert the channel entry in PMDF's configuration file. The entry should have the form:
process PROCESS-DAEMON
Rewrite rules can be added if desired to make it possible to queue mail explicitly to the processing channel. Something like
process $U%process.localhostname process.localhostname $U%process.localhostname@PROCESS-DAEMONwhere
localhostname is the name of the local PMDF
system will provide the necessary functionality. Once this is done any
address of the form
user%host@process.localhostnamewill be routed through the processing channel.