poa listening on unexpected high numbered port

i've recently set up a post office on a new server, and have noticed that, along with the expected ports, the gwpoa process is listening on high numbered ports, both tcp and udp [47690 and 52348 in the below example] that i can't account for. additionally, these ports changes every time the gwpoa process is restarted. what is this for?

here is lsof output:
>lsof -nPi | grep -iF gwpoa | grep -ivF established
gwpoa 30920 root 7u IPv4 3635224 0t0 TCP *:143 (LISTEN)
gwpoa 30920 root 9u IPv4 3632095 0t0 TCP *:1677 (LISTEN)
gwpoa 30920 root 10u IPv4 3632107 0t0 UDP *:1677
gwpoa 30920 root 11u IPv4 3632116 0t0 UDP *:52348
gwpoa 30920 root 12u IPv4 3635208 0t0 TCP 10.59.1.52:7101 (LISTEN)
gwpoa 30920 root 13u IPv4 3635230 0t0 TCP *:47690 (LISTEN)
gwpoa 30920 root 15u IPv4 3635203 0t0 TCP *:7181 (LISTEN)

here is ps output:
>pp | grep -iF gw
root 30920 1 0 16:34 pts/1 00:00:00 /opt/novell/groupwise/agents/bin/gwpoa @testpo60.poa
root 31028 30920 0 16:34 pts/1 00:00:00 gwdca /ip=server.example.com /port=51200 /temp=/srv/groupwise/post_offices/testpo60/oftemp /dcapath=/opt/novell/groupwise/agents/bin/ /maxtime=600 /maxsize=20480
root 31033 31028 0 16:34 pts/1 00:00:00 gwdca /gwdcawrkn=1 /ip=10.59.1.52 /port=51201 /l=en /maxtime=600 /maxsize=20480 /temp=/srv/groupwise/post_offices/testpo60/oftemp /template=/srv/groupwise/post_offices/testpo60/oftemp/gwdca/template /maxidletime=180
root 31036 1 0 16:34 pts/1 00:00:00 /opt/novell/groupwise/agents/bin/gwmta @testdom60.mta

thanks
-ben