By default, the GroupWise Sync Agent communicates with the GroupWise POA using port 4500. If necessary, you can configure the GroupWise Sync Agent to use a different port.
In the Mobility Admin console, click Config, then click GroupWise to display the GroupWise Sync Agent Configuration page.
In the Port field, change the port number as needed.
(Conditional) If there is a firewall between the Mobility server and the POA server, make sure that the specified port is open.
Click Save to save the new setting(s).
Restart the Mobility Service:
gms restart