The requested TCP/IP port is in use on this system

I have a serious problem now and I don’t find documentation in this respect.I have a Lotus Domino Server R6.5.1 on AIX 5.2 which has configured three net cards.

Only Example :

Ports=TCPIP,CLUSTER,INTERNET

CLUSTER=TCP,0,15,0,12288,

TCPIP=TCP, 0, 15, 0

INTERNET=TCP,0,15,0,12288,

TCPIP_TcpIPAddress=0,170.250.1.200:1352

INTERNET_TcpIPAddress=0,192.200.100.1:1352

CLUSTER_TcpIPAddress=0,192.201.101.1:1352

Server_Cluster_Default_Port=CLUSTER

Now I am getting messages on the Domino console

08/04/2004 10:56:14 Error on Listen function: The requested TCP/IP port is in use on this system.

08/04/2004 10:56:14 Listener task for port CLUSTER is suspending for 20 seconds due to listen errors

Alguien sabe como solucionar este mensaje???

Subject: The requested TCP/IP port is in use on this system

I have the same problem but my system runs OS/400

Can anybody help us?

regards,

Jose Manuel Solans Larrocha