import java.io.IOException;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Scanner;

public class Mail {
	private static final String CRLF = "\r\n";

	public static void main(String[] args) {
		// 循环发送邮件
		for (int i = 0; i < 100; ++i) {
			System.out.println("++++++++++++++" + (i + 1)
					+ "++++++++++++++++++++");
			send();
		}

	}

	private static void send() {
		PrintStream out = null;
		Scanner in = null;
		Socket smtpSocket = null;
		try {
			smtpSocket = new Socket("gmail-smtp-in.l.google.com", 25);
			out = new PrintStream(smtpSocket.getOutputStream());
			in = new Scanner(smtpSocket.getInputStream());
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}

		if (out == null || in == null) {
			return;
		}

		System.out.println("s:" + in.nextLine());

		out.print("helo nodomain.com" + CRLF);

		System.out.println("s:" + in.nextLine());

		out.print("mail from: <noname@nodomain.com>" + CRLF);

		System.out.println("s:" + in.nextLine());

		out.print("rcpt to: <testname@gmail.com>" + CRLF);

		System.out.println("s:" + in.nextLine());

		out.print("data" + CRLF);

		System.out.println("s:" + in.nextLine());

		out.print("from: <noname@nodomain.com>" + CRLF);
		out.print("to: <testname@gmail.com>" + CRLF);
		out.print("subject: test mail" + CRLF);
		out.print("" + CRLF);
		out.print("balabalabalabalabala" + CRLF);
		out.print("" + CRLF);
		out.print("." + CRLF);

		System.out.println("s:" + in.nextLine());

		out.print("quit" + CRLF);
		System.out.println("s:" + in.nextLine());

		in.close();
		out.close();
		try {
			smtpSocket.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}