pproxy is a POP3 proxy. It will wait for username and password from the POP3 client and authenticate the user. It will then ask the pcheckd(8) deamon on the POP3 server whether the mailbox is empty. If it is empty it will keep talking to the client, "simulating" the empty mailbox. If there is mail in the mailbox it will connect to the pserv(8) POP-Server, tell it which mailbox to open and then just forward data back and forth between the client and the server.
For details see the POPular manual.
Print short help screen.
Print version information.
Logfile to use. Default is /var/log/popular/pproxy.
Name of run directory. The pid and state file, and the control socket are saved into this directory. (default: /var/run/popular)