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How to resolve com.sun.mail.smtp.SMTPSendFailedException: 554 Email rejected

I am writing an email client to send email using yahoo SMTP server.
Getting error: com.sun.mail.smtp.SMTPSendFailedException: 554 Email rejected
Passed Authentication but throwing 554 while sending email:-
public static void main(String[] args) {
final String fromEmail = "myyahoo#yahoo.com"; //requires valid id
final String password = "xxxxxxx"; // correct password for gmail id
final String toEmail = "test.existing#gmail.com"; // can be any email id
System.out.println("TLSEmail Start");
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.mail.yahoo.com"); //SMTP Host
props.put("mail.smtp.port", "587"); //TLS Port
props.put("mail.smtp.auth", "Required"); //enable authentication
props.put("mail.smtp.starttls.enable", "true"); //enable STARTTLS
//create Authenticator object to pass in Session.getInstance argument
System.out.println("Calling getPasswordAuthentication");
Authenticator auth = new Authenticator() {
//override the getPasswordAuthentication method
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(fromEmail, password);
}
};
System.out.println("After getPasswordAuthentication");
Session session = Session.getInstance(props, auth);
EmailUtil.sendEmail(session, toEmail,"My First TLSEmail Testing Subject", "My first email client. TLSEmail Testing Body");
}
Output:-
TLSEmail Start
Calling getPasswordAuthentication
After getPasswordAuthentication
Message is ready
com.sun.mail.smtp.SMTPSendFailedException: 554 Email rejected
at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2358)
at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1823)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1300)
at javax.mail.Transport.send0(Transport.java:255)
at javax.mail.Transport.send(Transport.java:124)
at EmailUtil.sendEmail(EmailUtil.java:48)
at MyEmail.main(MyEmail.java:38)
What is the problem here.
Here is class EmailUtil:
public class EmailUtil {
public static void sendEmail(Session session, String toEmail, String subject, String body){
try
{
MimeMessage msg = new MimeMessage(session);
msg.addHeader("Content-type", "text/HTML; charset=UTF-8");
msg.addHeader("format", "flowed");
msg.addHeader("Content-Transfer-Encoding", "8bit");
msg.setFrom(new InternetAddress("no_reply#example.com", "NoReply-JD"));
msg.setReplyTo(InternetAddress.parse("no_reply#example.com", false));
msg.setSubject(subject, "UTF-8");
msg.setText(body, "UTF-8");
msg.setSentDate(new Date());
msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail, false));
System.out.println("Message is ready");
Transport.send(msg);
System.out.println("EMail Sent Successfully!!");
}
catch (Exception e) {
e.printStackTrace();
}
}
}
This client sends email using gmail SMTP server.

If you read here https://serversmtp.com/port-outgoing-mail-server/ and also here https://getmailspring.com/setup/access-yahoo-com-via-imap-smtp
You will notice that yahoo uses port 465 and in your code i see 587

Session in JavaMail

In the following Code in the session object (PasswordAuthentication ) what username and password we have to provide to send mail ? Sender's username password or receiver's credentials?
I am really confused , I am using java Mail to send mail
public void sendMail(String email,String token)
{
// Recipient's email ID needs to be mentioned.
String to = email;
// Sender's email ID needs to be mentioned
// Assuming you are sending email through relay.jangosmtp.net
String host = "smtp.gmail.com";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "587");
// Get the Session object.
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
// Create a default MimeMessage object.
Message message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress("Issme-Customer-Service"));
// Set To: header field of the header.
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
message.setSubject("Email Verification Of issme Account");
message.setContent(
"<h2>Email Verification </h2>" +
"<h3> Please goto the following URL to verify your ISSME account\n </h3> " +
token , "text/html; charset=utf-8");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}

You need to send the sender's credentials which gmail's SMTP server will authenticate and then it'll send the email.

AuthenticationFailedException while sending email using Java

I'm trying to send email using java API and i'm giving the right emailid and password but still i get AuthenticationFailedException.
I also tried giving host=mail.smtp.port and changing port to 587 still i end up getting the same error..
Please help me where i'm going wrong..?
public class SendEmail
{
public static void main(String [] args)
{
// Recipient's email ID needs to be mentioned.
String to = "to#gmail.com";
// Sender's email ID needs to be mentioned
final String from = "from#gmail.com";
// Assuming you are sending email from localhost
final String host = "smtp.googlemail.com";
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", host);
properties.setProperty("mail.smtp.starttls.enable", "true");
properties.setProperty("mail.smtp.user", from);
//properties.setProperty("mail.smtp.password", "xyz");
properties.setProperty("mail.debug", "false");
properties.setProperty("mail.smtp.auth", "true");
// properties.setProperty("mail.smtp.port", "587");
// Get the default Session object.
// Session session = Session.getDefaultInstance(properties);
Session session = Session.getInstance(properties,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(from, "xyz");
}
});
session.setDebug(true);
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("This is the Subject Line!");
// Now set the actual message
message.setText("This is actual message");
// Send message
// Transport.send(message);
Transport.send(message);
System.out.println("Sent message successfully....");
}catch (MessagingException mex) {
mex.printStackTrace();
}
}
}
Error:
javax.mail.AuthenticationFailedException
at javax.mail.Service.connect(Service.java:306)
at javax.mail.Service.connect(Service.java:156)
at javax.mail.Service.connect(Service.java:105)
at javax.mail.Transport.send0(Transport.java:168)
at javax.mail.Transport.send(Transport.java:98)

Just check if you have enabled logging in from "Less Secure Apps" using this link. This setting needs to be enabled for the account from#gmail.com.

Error when sending mail in Java

i have desktop application and i face this error when sending mail javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 587; nested exception is: java.net.ConnectException: Connection refused: connect
~code~
String host="smtp.mail.yahoo.com";
Properties props = new Properties();
props.setProperty("mail.smtp.auth", "true");
props.setProperty("mail.smtp.host",host);
props.put("mail.smtp.host", host);
props.put("mail.stmp.user", "abc#yahoo.ca");//User name
//To use TLS
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.password", "mypassword"); //Password
props.put("mail.smtp.socketFactory.fallback", "false");
Session session1 = Session.getDefaultInstance(props, new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
String username = "abc#yahoo.ca";
String password = "mypassword";
return new PasswordAuthentication(username, password);
}
});
MimeMessage msg = new MimeMessage(session1);
String from = "abc#yahoo.ca";
String subject = "Testing...";
msg.setFrom(new InternetAddress(from));
msg.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(email));
msg.setSubject(subject);
Transport.send(msg);

YahooMail smtp port is 465 or 587
Add this :-
props.put("mail.smtp.port", "465");
or
props.put("mail.smtp.port", "587");

Did you find the JavaMail FAQ?
These entries will help:
How do I access Gmail with JavaMail?
How do I debug problems connecting to my mail server?
What are some of the most common mistakes people make when using JavaMail?

Try this:
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 = "abcd#gmail.com";
// Sender's email ID needs to be mentioned
String from = "web#gmail.com";
// Assuming you are sending email from localhost
String host = "localhost";
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", host);
// Get the default Session object.
Session session = Session.getDefaultInstance(properties);
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("This is the Subject Line!");
// Now set the actual message
message.setText("This is actual message");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
}catch (MessagingException mex) {
mex.printStackTrace();
}
}
}

Error while sending mails using smtp

I need to send mail from my gmail account to another. I used the following code.
String fromaddress = "xxx#gmail.com";
String password = "yyy";
String hostname = "smtp.gmail.com";
String hoststring = "mail.smtp.host";
String toaddress = "yyy#gmail.com";
String emailcontent;
Properties properties = System.getProperties();
properties.setProperty(hoststring, hostname);
Session session = Session.getDefaultInstance(properties);
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(fromaddress));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(toaddress));
message.setSubject("hi");
emailcontent = "hi...";
message.setText(emailcontent);
System.out.println(emailcontent);
Transport.send(message);
System.out.println("Sent....");
}catch (MessagingException mex)
{
mex.printStackTrace();
}
But i get the error as follows...
javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 25
How am i to solve this. Can you please help me out.

public static void sendEmail(Email mail) {
String host = "smtp.gmail.com";
String from = "YOUR_GMAIL_ID";
String pass = "YOUR_GMAIL_PASSWORD";
Properties props = System.getProperties();
props.put("mail.smtp.starttls.enable", "true"); // added this line
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
// Get the default Session object.
Session session = Session.getDefaultInstance(props, null);
try {
// Create a default MimeMessage object.
MimeMessage message = new MimeMessage(session);
// Set sender
message.setFrom(new InternetAddress("Senders_EMail_Id"));
// Set recipient
message.addRecipient(Message.RecipientType.TO, new InternetAddress("RECIPIENT_EMAIL_ID"));
// Set Subject: header field
message.setSubject("SUBJECT");
// set content and define type
message.setContent("CONTENT", "text/html; charset=utf-8");
Transport transport = session.getTransport("smtp");
transport.connect(host, from, pass);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
} catch (MessagingException mex) {
System.out.println(mex.getLocalizedMessage());
}
}
}`
I think this should do the trick.

I think you need to change the port no. 25 to 587
you can get help from
http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example/
gmail setting help link:
http://gmailsmtpsettings.com/

Just adding few more tweaks to the question above:
Change the port to 465 to enable ssl sending.
I don't think above code will work, as you need to have an authenticator object too. As smtp also requires authentication in case of gmail.
You can do something like:
Have a boolean flag,
boolean authEnable = true; //True for gmail
boolean useSSL = true; //For gmail
//Getters and setters for the same
if (isUseSSL()) {
properties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.socketFactory.port", "465");
}
Authenticator authenticator = new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("abc#gmail.com", "xyz"));
}
};
if (isAuthEnable()) {
properties.put("mail.smtp.auth", "true");
session = Session.getDefaultInstance(properties, authenticator);
} else {
session = Session.getDefaultInstance(properties);
}