import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.Socket;

public class SendBJBMail {

    public static void main (String[] args) throws Exception {

        while (true) {

            try (Socket s = new Socket("mail.devdoodle.net", 25)) {
                PrintWriter out = new PrintWriter(new OutputStreamWriter(s.getOutputStream(), "us-ascii"), true);
                BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream(), "us-ascii"), 1);
                command(null, in, null);
                command(out, in, "HELO nowhere.com");
                command(out, in, "MAIL FROM:nobody@nowhere.com");
                command(out, in, "RCPT TO:bjb568@devdoodle.net");
                command(out, in, "DATA");
                command(out, null, "Subject: OMG");
                command(out, null, "");
                command(out, null, "HAI");
                command(out, in, ".");
                command(out, in, "QUIT");
            } catch (Exception x) {
                System.out.flush();
                System.err.println(x.getClass().getSimpleName() + ": " + x.getMessage());
            }

            Thread.sleep(30000);

        }

    }

    static void command (PrintWriter out, BufferedReader in, String cmd) throws Exception {

        if (out != null) {
            System.out.println(">>> " + cmd);
            out.println(cmd);
        }

        if (in != null) {
            String response = in.readLine();
            System.out.println("<<< " + response);
            if (response.startsWith("4") || response.startsWith("5"))
                throw new Exception("SMTP command failed: " + response);
        }

    }

}