Rmi client cannot send message

Question

Hi
I'm running the rmiregistry server at port 8000.
My application uses an API which reads a file for its configuration. I've set the RMI PORT to 8000 in the config file.
Its possible to telnet "IP:8000" from the remote machine but when the remote application tries to send a message (using the api) it gets an error "cannot send message". The remote application also uses a config file to determine the IP and PORT it'll connect to. IP is set to the address where server program is running and port is set to 8000.
The server api generates a log (showing each message processed) : Log generated indicates that API starts successfully but there are no entries for any messages received. Seems the messages are not arriving at all.
Is any more configuration required?
Regards,

Answer 1

Here goes:
The application communicates with an MMSC. Has two threads one for sending and another for receiving messages.
The sending Thread is working just fine. Both Threads use an API for communicating with the MMSC.
I start the RMIregistry Server with the following:
java -cp path/ApiName.jar sun.rmi.registry.RegistryImpl 8000
One needs to implement an Listener interface to receive messages.
Here's my class for the same
public class ReceiveMMS extends Thread implements MsgListener {
public void run(){
          while(true){
               try{
                    Thread.sleep(1000);
               catch (Exception e) {
                    e.printStackTrace();
public ReceiveMMS() {
          try {
          System.out.println("Registering application to receive messages...");
          APIClassInstance.registerToReceiveMessages(this);
          System.out.println("Application Now Listening for messages.");
          catch (ApiNotYetStartedException anyse) {
               System.out.println("Exception caught while Registering Application: " + anyse);
public Result processThisMessage(MessageArrivedEvent mae) {
Result _result = new Result(ResultCodes.SUCCESS,"Receive Message Successful");
try {
System.out.println("New Multimedia Message Arrived. Fetching it...");
// call fetchMessage() to fetch message from queue
MimeBodyPart _receivedMessage = APIClassInstance.fetchMessage();
     //MESSAGE PROCESSING LOGIC
catch (ApiNotYetStartedException anyse) {
System.out.println("");
_result.setResultCode(ResultCodes.FAILURE);
_result.setResultText(": "+anyse);
catch (NoMessagePresentException nmpe) {
System.out.println(" : "+nmpe);
_result.setResultCode(ResultCodes.FAILURE);
_result.setResultText("No Message Present : "+nmpe);
catch (CannotFetchMessageException cfme) {
System.out.println("Cannot Fetch Message - Check RECEIVE property :"+cfme);
_result.setResultCode(ResultCodes.FAILURE);
_result.setResultText("Cannot Fetch Message. Check RECEIVE property :"+cfme);
catch (Exception e) {
System.out.println("Error Handling Message : "+e);
_result.setResultCode(ResultCodes.FAILURE);
_result.setResultText("Error Handling Message : "+e);
return _result;
processThisMessage() METHOD is called when a message arrives. This notification is not taking place.
Is there a special way for making this notification happen
what i can figure is, some configuration is missing, and the remote app is not able to notify the MessageHandler.
The API starts successfully and is able to connect to remote system (sure, as it can send messages). The api uses RMi internally--when dont start the registry server i get the 'Class not found for the STUB Class'
Regards