Re: How to use sendmail in Java?

From:

microsoft_geek <aurobindo.mondal@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sat, 03 Nov 2007 02:47:51 -0700

Message-ID:

<1194083271.174664.95670@q5g2000prf.googlegroups.com>

I am giving here the full source code by using this code i have
successfully sent mail to any address. You have to set the classpath
of the JavaMail API first... then try this code... with proper values
in the fields

//here is the code
//Author - A. B. Mondal(die4java@gmail.com)

import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

// Send a simple, single part, text/plain e-mail

public class TestEmail {

    public static void main(String[] args) {

        // SUBSTITUTE YOUR EMAIL ADDRESSES HERE!!!
        String to = "TO@domain.com";
        String from = "from@domain.com";

        // SUBSTITUTE YOUR ISP'S MAIL SERVER HERE!!!
        String host = "mail.infobase.in";

        // Create properties, get Session
        Properties props = new Properties();

        // If using static Transport.send(),
        // need to specify which host to send it to
        props.put("mail.smtp.host", host);

        // To see what is going on behind the scene
        props.put("mail.debug", "true");
        Session session = Session.getInstance(props);

        try {
            // Instantiate a message
            Message msg = new MimeMessage(session);

            //Set message attributes
            msg.setFrom(new InternetAddress(from));
            InternetAddress[] address = {new InternetAddress(to)};
            msg.setRecipients(Message.RecipientType.TO, address);
            msg.setSubject("UR SUBJECT");
            msg.setSentDate(new Date());

            // Set message content
            msg.setText("This is a test of sending a " +
                        "plain text e-mail through Java.\n" +
                        "BY YOU");

            //Send the message
            Transport.send(msg);
        }
        catch (MessagingException mex) {
            // Prints all nested (chained) exceptions as well
            mex.printStackTrace();
        }
    }
}//End of class

Regards
Aurobindo
Java Developer

void.no.spam.com@gmail.com wrote:

I have the following Perl code that works for sending email from a
Linux machine:

open(SENDMAIL, "|/usr/sbin/sendmail -t") or die "Unable to open
sendmail";
print(SENDMAIL "To: $recipients\n");
print(SENDMAIL "Subject: Test Results\n");
print(SENDMAIL "\n");
print(SENDMAIL "here are the results\n");
close(SENDMAIL);

I want to do the same thing in Java, but when I try to open that file,
I get "java.io.FileNotFoundException: !/usr/sbin/sendmail -t (No such
file or directory)"

So then I tried to use the JavaMail API, and I got the following
exception:

send failed, exception: javax.mail.SendFailedException: Sending
failed;
  nested exception is:
        class javax.mail.MessagingException: Could not connect to SMTP
host: 10.11.8.45, port: 25;
  nested exception is:
        java.net.ConnectException: Connection refused

I did a ps -fea and I see that sendmail is running and accepting
connections. netstat -an shows that port 25 is listening. Iptables
is not running so it isn't a firewall issue. I'm trying to run the
Java program from the same machine where sendmail is running. Any
idea why JavaMail can't connect?

This is the code I'm using:

    java.util.Properties props = new java.util.Properties();
    props.put("mail.smtp.host", "10.11.8.45");
    props.put("mail.from", "sender@domain");
    Session session = Session.getInstance(props, null);

    try {
      MimeMessage msg = new MimeMessage(session);
      msg.setFrom();
      msg.setRecipients(Message.RecipientType.TO,
                        "test@ourdomain.com");
      msg.setSubject("JavaMail hello world example");
      msg.setSentDate(new java.util.Date());
      msg.setText("Hello, world!\n");
      Transport.send(msg);
    }
    catch (MessagingException mex) {
      System.out.println("send failed, exception: " + mex);
    }