Connecting J2EE engine via DeveloperStudio

Hi,

my Portal is installed on

http://remoteHost:50300/irj/portal

I develop a Web Dynpro application.

And now try to deploy and test the application on the J2EE enginge. When i try to connect the J2EE engine via developer i allways got this error message:

Exception: The message server did not respond within 60 sec. Please check if the message server is running and if the socket connection has been established. Nested

Exception : null;

For the Message Server Host (remoteHost)and Port (50300) i use the same entries like for the Portal.

Where is my error?

Where i can check the J2EE enginge configuration settings?

Thanks,

Vikas