Funny behavior with port 25

Question

hi,
i am developing an SMTP server, and therefore have to use port 25. the thing is i use a printwriter for the output and a bufferedstreaminput for the input. the program works well on any other port, except port 25 where it will only chuck out a line and one has to click enter for it to chuck the other. this then crashes the program has it should. i am using sdk1.4 and windows 2000. any idea has to why this odd behavior?
thanks

Answer 1

that is the joy of it, it doesn't give me any exception, it just doesn't work properly on port 25. that is what i don't understand. is it something to do with my setup of windows 2000, or is it a bug of some sort?
the code for 2 of the classes is shown below
import java.net.*;
import java.util.*;
class EmailServer implements Runnable {
     ServerSocket server = null;
     public static void main(String[] args) {
          Thread email = new Thread(new EmailServer());
          email.start();
     public void run()
          try {
               server = new ServerSocket(26);
               System.out.println("The server has started");
               while (true) {
                    Socket socket = server.accept();
                    Thread request = new Thread(new EmailRequest(socket));
               request.setDaemon(true);
                    request.start();
          catch (Exception e) {
               System.err.println("Unable to start EmailServer: " + e.getMessage());
               e.printStackTrace();
import java.net.*;
import java.io.*;
import java.util.*;
class EmailRequest implements Runnable {
private Socket clientconnection;
     String word = "";
          PrintWriter output;
     BufferedReader in;
     String line =""     ;
public EmailRequest(Socket clientconnection) {
this.clientconnection = clientconnection;
private void process()
          try
               System.out.println("The connection has opened.");
               output = new      PrintWriter(clientconnection.getOutputStream(),true);
               in = new BufferedReader(new InputStreamReader(clientconnection.getInputStream()));
               boolean OPEN=true;
               SMTPRequest request = new SMTPRequest(clientconnection.getOutputStream(),clientconnection.getInputStream());
//               SMTPPlay playing = new SMTPPlay(clientconnection.getOutputStream());
//               playing.PrintIt();
               output.println("220 192.168.0.27");
               while (OPEN)
                    line = in.readLine().trim();
                    System.out.println(line);
                    output.println(line);     
                    if (line.compareToIgnoreCase("QUIT")==0)
                         OPEN=false;
                         in.close();
                         clientconnection.close();
                    else
                         request.commandParser(line);
               if (request.MAIL)
                    request.PrintEmail();
               System.out.println("The connection has closed");
          } catch (Exception e) {
          System.err.println("There was an error with EmailServer: " + e.getMessage());
//               e.printStackTrace();
public void run()
     try
          process();
     }catch(Exception e)
          System.out.println("upss");
}