RMI + LAN = trouble !!

Question

my server is a linux machine with ip 192.168.100.76.
i have made an email service in which my smtp and pop3 are installed in the linux server
i have made a client application which fetches the mail from the server..
Now the problem
we know that the stub always gets downloaded from the server..
this procedure is only happening when the client executes in the server itself
but when the client is ran on a LAN it is not able to download it
the server code is this...
import java.rmi.*;
public class KONMain {
     public static void main(String[] arg) {
          try {
//               the code for starting the rmi registry               
//               System.out.println("RMI registry started");
               if(System.getSecurityManager()==null)
                    System.setSecurityManager(new RMISecurityManager());
               java.rmi.registry.LocateRegistry.createRegistry(1099);
               Naming.rebind("aikon", new KONMail(arg[0]));
               System.out.println("Server has started");
               new TJMultiServer();
          } catch (Exception e) {
               System.out.println("Server exception: " + e);
}the server is started as
java -Djava.rmi.server.codebase=file:///home/aikon/aikon/kon_server/ -Djava.security.policy=policy KONMain <ip>
in this way the server is started
when starting the client
it only fetches the _stub from the server repository when started in the same machine
this criterion fails when the client is ran in another machine
the client code that theoritically fetches the stub :p
                                   if(System.getSecurityManager()==null)
                                        System.setSecurityManager(new RMISecurityManager());
                                   KONInterface ke = (KONInterface)Naming.lookup("//" + ipAddr +"/aikon");
                                   boolean x = ke.authenticate(username,password);
                                   if(x==true){
                                        new KONFrame(username,password,ipAddr);
                                        //new TJInterface();
                                        authFrame.dispose();
                                   else{
                                        authFrame.dispose();
                                        new KONAuthenticate("                    Invalid user name password");
                              }the starting statement for client
java -Djava.security.policy=policy KONAuthenticate <ip of server>

Answer 1

Is it a secret how it fails?