dispatcher running but not connecd to message server

hi..

iam trying to start my server, in process list iam getting dispatcher is not getting start.first iam getting 'DISPATCHER IS RUNNING BUT NOT CONNETED TO MESSAGE SERVER' it is in yellow color, after some time , it is changing to green color but the message is ' MESSAGE SERVER IS OK BUT DIALOG QUEUE IS STAND STILL' afere some time its getting stop.

can any one help me pls what is the problem?