SMTP Mail Client

[nikki02]

I'm trying to figure this out with out any Java experience. I'm trying to write a program that will send a SMTP email. I was given a shell and I do know how to establish a connection. My next question is how do I Send MAIL FROM command, Send RCPT TO command, Send DATA command, Send message data and End with line with a single period. Will this be just a matter or printing this information? Someone please help me figure this out.

import java.io.*;
import java.net.*;

public class EmailSender
{
   public static void main(String[] args) throws Exception
   {
      // Establish a TCP connection with the mail server.
      
	Socket TCPConnection = new TCPConnection("mail.bellsouth.net, 25");

      // Create a BufferedReader to read a line at a time.

      InputStream is = socket.getInputStream();
      InputStreamReader isr = new InputStreamReader(is);
      BufferedReader br = new BufferedReader(isr);

      // Read greeting from the server.
      
      String response = br.readLine();
      System.out.println(response);
      if (!response.startsWith("220")) {
         throw new Exception("220 reply not received from server.");
      }

      // Get a reference to the socket's output stream.
      OutputStream os = socket.getOutputStream();

      // Send HELO command and get server response.
      String command = "HELLO Nikki\r\n";
      System.out.print(command);
      os.write(command.getBytes("US-ASCII"));
      response = br.readLine();
      System.out.println(response);
      if (!response.startsWith("250")) {
         throw new Exception("250 reply not received from server.");
      }

      // Send MAIL FROM command.
	      

      // Send RCPT TO command.
      
	
      // Send DATA command.
      

      // Send message data.
      
      // End with line with a single period.
      

      // Send QUIT command.
      
   }
}

 

[Miros]

Well, you're sending your commands to System.out, and only sending the first command to os.write... so you've only got the sender, not the recipient or the message itself.