Message server not redirecting

Hi Gurus,

We have a situation here in our TEST SERVER.We have two application instances and the  message service is provided by the ASCS instance installed in DB host.Ideally the message service should redirect to one of the two application instances.But this redirection is failing.

This is the URL for call of the message service call  http://dbhostname:8122/sap/bc/gui/sap/its/webgui?sap-client=700

should redirect to http://app1hostname:8000/sap/bc/gui/sap/its/webgui?sap-client=700 

or http://app2:8001/sap/bc/gui/sap/its/webgui?sap-client=700 

but it is failing.

The message service runs on 3622 port and has been maintained in services file in DB host.

These are the profile params maintained in the profile

icm/keep_alive_timeout                    3600

icm/server_port_2                           PROT=HTTPS,PORT=8100,TIMEOUT=2700,PROCTIMEOUT=6000

exe/icmbnd                                  $(DIR_CT_RUN)/icmbnd

icm/server_port_0                           PROT=HTTP,PORT=8000,TIMEOUT=2700,PROCTIMEOUT=6000

icm/host_name_full                          app1hostname

icm/min_threads                             25

icm/max_threads                             300

Could you please suggest what could be missing in the config part?

Thanks

Sabya