Security.Couldn't resolve IP for host mailhost or for

Question

I want send email from Aplet
I get error :
Sending failed: security.Couldn't resolve IP for host mailhost or for
This is my code
Please help me
import java.io.*;
import java.util.*;
import java.net.*;
import java.awt.*;
import sun.net.smtp.SmtpClient;
import sun.net.smtp.*;
import sun.net.TransferProtocolClient;
public class sendEMail
public sendEMail()
public void send_1()
try
String hostname = InetAddress.getLocalHost().toString();
//Socket socket =new Socket (getCodeBase().getHost(),25);
Socket socket =new Socket (hostname,25);
DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
dos.writeBytes("HELO" + hostname);
dos.writeBytes( "MAIL FROM: " + "mary-g@" + hostname + "\n");
dos.writeBytes("RCPT TO :< [email protected]>\n ");
dos.writeBytes("DATA \r\n");
dos.writeBytes("Subject : test ");
dos.writeBytes("ggggggggggggg \r \n ");
dos.writeBytes("\r \n QUIT ");
dos.flush();
socket.close();
catch( IOException ex )
System.out.println( "Sending failed: " + ex.getMessage() );
Thanks.

Answer 1

If you want your applet to access resources on the local system (instead of on the server where the applet came from), you must sign your applet. In this example, it is probably not worth it. It is quite unlikely that somebody who runs your applet will also have an SMTP mail server on their system.