'javax.mail.sendfailedexception: Sending failed; nested exception is: class javax.mail.authenticationfailedexception at send

I am new to java mail, I want to sent a mail with attachments so i like to create a test mail with sample codes from internet but i am getting

javax.mail.sendfailedexception: sending failed;
nested exception is: class javax.mail.authenticationfailedexception 
at javax.mail.transport.send0(Transport.java.218)
at javax.mail.transport.send(Transport.java.80)

I tried with different authentication but i failed 

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

public class SendEmail
{
   public static void main(String [] args)
   {

      // Recipient's email ID needs to be mentioned.
      String to = "[email protected]";

      // Sender's email My Office mail server
      String from = "[email protected]";
      String pass = "Password";
      String host = "172.23.5.10";
      String port = "25";

      // Get system properties
      Properties properties = System.getProperties();

      // Setup mail server
      properties.setProperty("mail.smtp.host", host);
      properties.setProperty("mail.smtp.port", port);
      properties.setProperty("mail.smtp.auth", "true");

      // Get the default Session object.
      Session session = Session.getInstance(properties,new MailAuthentication(from,pass));

      try{
         // Create a default MimeMessage object.
         MimeMessage message = new MimeMessage(session);

         // Set From: header field of the header.
         message.setFrom(new InternetAddress(from));

         // Set To: header field of the header.
         message.addRecipient(Message.RecipientType.TO,
                                  new InternetAddress(to));

         // Set Subject: header field
         message.setSubject("Test Mail");

         // Create the message part 
         BodyPart messageBodyPart = new MimeBodyPart();

         // Fill the message
         messageBodyPart.setText("Test Mail Success Hari");

         // Create a multipar message
         Multipart multipart = new MimeMultipart();

         // Set text message part
         multipart.addBodyPart(messageBodyPart);

         // Send the complete message parts
         message.setContent(multipart );

         // Send message
         Transport.send(message);
         System.out.println("Sent message successfully....");
      }catch (MessagingException mex) {
         mex.printStackTrace();
      }
   }
}

import javax.mail.*
public class MailAuthentication extends Authentication
{

    String _user;
    String _pass;
    public GMailAuthenticator (String username, String password)
    {
        super();
        this._user = username;
        this._pass = password;
    }
    public PasswordAuthentication getPasswordAuthentication()
    {
        return new PasswordAuthentication(_user, _pass);
    }
}

i also tried with 

Session session = Session.getInstance(props,
          new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
          });

and 

Session session = Session.getDefaultInstance(properties);

and 

Session session = Session.getDefaultInstance(properties);

but i am getting the same error.

Kindly help me to solve this out

I am using Windows PC like java environment variables is there any steps for SMTP ??

Thanks in Advance.

javaemailsmtpjakarta-mailsmtp-auth


Solution 1:[1]

You must add mail.smtp.ssl and mail.smtp.sender.address properties.. mail.smtp.sender.address is same as from property. It must work..it is working as expected for me.. Hope it helps

If it doesn't solve your problem, just share the exception stack trace of caused by..

Solution 2:[2]

You can switch to an app made by Google such as Gmail to access your account (recommended) or change your settings so that your account is no longer protected by modern security standards.

Sources

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Source: Stack Overflow

Solution Source
Solution 1
Solution 2 honk

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