javax.naming.CommunicationException in imqbrokerd

I am running iPlanet/netscape on Sun Solaris 5.8. When I reboot my server i get continous scrolling messages as follows

Sep 20 01:13:11 stardust imqbrokerd_psw-broker[382]: ERROR javax.naming.Communi
cationException:edi-portal.cayre.com:389:
Sep 20 01:13:11 stardust com.sun.messaging.jmq.auth.LoginException: javax.naming
.CommunicationException:edi-portal.cayre.com:389


These error messages continously repeat.

FYI
edi-portal.cayre.com - host name

I need an urgent solution as this is my production server.

This message as is in the logs file in /var/imq/instances/psw-broker/log/log.txt

need desperate help.......... thanks for any input you may have

thanks
ND