Over a million developers have joined DZone.

Authenticate With SMTP Server Before Sending Email

Build APIs from SQL and NoSQL data sources in seconds. Read the Creating REST APIs white paper, brought to you in partnership with CA Technologies.

For more info see: http://java.sun.com/products/javamail/javadocs/com/sun/mail/smtp/package-summary.html

You need activation.jar, smtp.jar, and mailapi.jar in your classpath for this to work.


import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;

public class MailWithPasswordAuthentication {
public static void main(String[] args) throws MessagingException {
new MailWithPasswordAuthentication().run();
}

private void run() throws MessagingException {
Message message = new MimeMessage(getSession());

message.addRecipient(RecipientType.TO, new InternetAddress("to@example.com"));
message.addFrom(new InternetAddress[] { new InternetAddress("from@example.com") });

message.setSubject("the subject");
message.setContent("the body", "text/plain");

Transport.send(message);
}

private Session getSession() {
Authenticator authenticator = new Authenticator();

Properties properties = new Properties();
properties.setProperty("mail.smtp.submitter", authenticator.getPasswordAuthentication().getUserName());
properties.setProperty("mail.smtp.auth", "true");

properties.setProperty("mail.smtp.host", "mail.example.com");
properties.setProperty("mail.smtp.port", "25");

return Session.getInstance(properties, authenticator);
}

private class Authenticator extends javax.mail.Authenticator {
private PasswordAuthentication authentication;

public Authenticator() {
String username = "auth-user";
String password = "auth-password";
authentication = new PasswordAuthentication(username, password);
}

protected PasswordAuthentication getPasswordAuthentication() {
return authentication;
}
}
}



The Integration Zone is brought to you in partnership with CA Technologies.  Create app backends instantly with REST APIs and reactive logic using CA Live API Creator.

Topics:
authentication

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}