Ciao a tutti,
su internet ho trovato il seguente script per inviare mail
codice:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.net.*;

public class MailServlet extends HttpServlet {

    /**
	 * 
	 */
	private static final long serialVersionUID = -9039413964097796343L;
	String MAIL_SERVER_URL = "127.0.0.1"; 
    int MAIL_PORT = 25; 
    Socket socket;       
    DataInputStream in;   
	    PrintStream out;       
	    String str;         
	 
	    public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
	        PrintWriter out;
	                 
	        SendMail("From", "To", "subj", "text");
	        response.setContentType("text/html");
	        out = response.getWriter();
	        out.println("n");
	        out.println("n");
	        out.println("SendMailn");
	        out.println("n");
	        out.println("n");
	        out.close();
	    }
 
	    public void SendMail(String to, String from, String subject, String message) throws ProtocolException, IOException {
	        Socket socket = new Socket(MAIL_SERVER_URL, MAIL_PORT);
        in = new DataInputStream(socket.getInputStream());
	        out = new PrintStream(socket.getOutputStream());
	        if (!checkStatus("220")) {
            throw new ProtocolException(str);
        }
	        out.println("HELO " + MAIL_SERVER_URL);
        out.flush();
        if (!checkStatus("250")) {
	            throw new ProtocolException(str);
	        }
	        out.println("MAIL FROM: " + from);
	        out.flush();
	        if (!checkStatus("250")) {
	            throw new ProtocolException(str);
	        }
	        out.println("RCPT TO: " + to);
	        out.flush();
	        if (!checkStatus("250")) {
	            throw new ProtocolException(str);
	        }
	        out.println("DATA");
	        out.flush();
	        if (!checkStatus("354")) {
	            throw new ProtocolException(str);
	        }
	        out.println("From: " + from);
	        out.println("To: " + to);
	        out.println("Subject: " + subject + "n");
	        out.flush();
	        out.println("");
	        out.println(message);
	        out.println(".");
	        out.flush();
	        if (!checkStatus("250")) {
	            throw new ProtocolException(str);
	        }
	        out.println("QUIT");
	        out.flush();
	        in.close();
	        socket.close();
	    }
	 
	    private boolean checkStatus(String RFC) throws ProtocolException, IOException {
	        str = in.readLine();
	        System.out.println(str);
	        if (!str.startsWith(RFC)) {
	            throw new ProtocolException(str);
	        }
	        while (str.indexOf('-') == 3) {
	            str = in.readLine();
	            if (!str.startsWith("RFC")) {
	                throw new ProtocolException(str);
	            }
	        }
	        return true;
	    }
	}
Ho effettuato diverse prove, specificando come "FROM" il mio indirizzo di posta e "TO" un altro mio indirizzo di posta, ma se effettuo il "Run on Server", ma il server mi risponde "java.net.ConnectException: Connection refused"
Avete qualche idea? o una guida da linkarmi su come fare?

Grazie in anticipo