smtp implementation

السلام عليكم و رحمه الله و بركاته

لقد قمت بكتابه برنامج لارسال بريد الكتروني وهو قائم علي ال smtp protocol

ولكنه هناك خطا في البرنامج !!

import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;



public class stmpClient {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Date dDate = new Date();
		String sendaya = new String("");
		DateFormat dFormat =  DateFormat.getDateInstance(DateFormat.FULL,Locale.US);
		DataOutputStream sendStream = null;
		// TODO Auto-generated method stub
		try {
			Socket handShakeSocket = new Socket("smtp.gmail.com" , 25);
			System.out.println("Done");
			sendStream = new DataOutputStream(handShakeSocket.getOutputStream());
			sendStream.writeBytes("HELO gmail.com\r\n");
			sendStream.writeBytes("MAIL From: <vidooman@gmail.com>\r\n");
			sendStream.writeBytes("RCPT To: <abdel.sattar.bombo@gmail.com>\r\n");
			sendStream.writeBytes("DATA\r\n");
			//sendStream.writeBytes("X-Mailer: Via Java\r\n");
			//sendStream.writeBytes("DATE: " + dFormat.format(dDate) + "\r\n");
			//sendStream.writeBytes("From: Me <vidooman@gmail.com>\r\n");
			//sendStream.writeBytes("To:  YOU <abdel.sattar.bombo@gmail.com>\r\n");
			//sendStream.writeBytes("RCPT Bcc: BCCDude<BCC@invisiblecompany.com>\r\n");   
		    sendaya = "Your subjectline.";
		    //sendStream.writeBytes("Subject: Your subjectline here\r\n");
		    sendStream.writeBytes(sendaya + "\r\n");
		    sendStream.writeBytes("\r\n.\r\n");
		    sendStream.writeBytes("QUIT\r\n");

			System.out.println("Done");
		} catch (UnknownHostException e) {
			System.out.println("error");
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			System.out.println("error");
			// TODO Auto-generated catch block
			e.printStackTrace();
		} 
		}

}