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SMTP Mail Sending Issue : com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay

I am trying to send mail from Java.
If i will send mail to same SMTP it working fine.
If i will send mail to outside SMTP means like Gmail, Yahoo etc. it'as shows error like,
[com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay][1]
ERROR :
SimpleEmail Start
javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay
Mail Send Successfully
at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:2064)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1286)
at javax.mail.Transport.send0(Transport.java:255)
at javax.mail.Transport.send(Transport.java:124)
at com.nirav.java.project.demo.JavaMailSend.sendEmail(JavaMailSend.java:26)
at com.nirav.java.project.demo.NewSimpleMail.main(NewSimpleMail.java:34)
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 550 5.7.1 Unable to relay
at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1917)
... 5 more
Code For Mail Sending :
try {
System.out.println("SimpleEmail Start");
String smtpHostServer = "XX.XX.XX.XXX";
final String toEmail = "XXXXXXXXXX#XXX.XXX";
final String fromEmail = "XXXXXXXXXX#XXX.XXX";
final String password = "XXXXXXXXXXXX";
Properties props = System.getProperties();
props.put("mail.smtp.host", smtpHostServer);
props.put("mail.smtp.port", "25"); //If other then
Session session = Session.getInstance(props, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(fromEmail, password);
}
});
//Session session = Session.getInstance(props, null);
MimeMessage message = new MimeMessage(session);
message.addHeader("Content-type", "text/HTML; charset=UTF-8");
message.addHeader("format", "flowed");
message.addHeader("Content-Transfer-Encoding", "8bit");
message.setFrom(new InternetAddress("XXXXXX#XXX.XXX", "NoReply-JD"));
message.setReplyTo(InternetAddress.parse("XXXXXXXXX#XXX.XXX", false));
message.setSubject(subject, "UTF-8");
message.setText(body, "UTF-8");
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toEmail, false));
Transport.send(message);
System.out.println("Mail Send Successfully");
} catch (Exception e) {
e.printStackTrace();
}
Please help me.
Thnaks.

Originally I was about to post this as comment, but it's too long.
The error is quite obvious, you are not allowed to use given SMTP server as relay. (What are SMTP relays?)
There are couple of reasons why this can happen:
You are not authenticated (need to login before sending)
Recipient is not in list of domains allowed to relay to
IP address from which you are connecting is not in white list (aka mynetworks in postfix context)
without providing more info (which SMTP server you are using, where are you sending mail, are you authenticated), I guess nobody will help you.
5.7.1 status code from IANA registry
The sender is not authorized to send to the destination. This can be
the result of per-host or per-recipient filtering. This memo does not
discuss the merits of any such filtering, but provides a mechanism to
report such. This is useful only as a permanent error.

Had this problem also but it was intermittent.
We have 2 servers that are within a cluster and on one the ip address of system that sends the email was not defined correctly.
Unfortunately the error message "javax.mail.SendFailedException: Invalid Addresses is confusing.
the 2nd error message: "com.sun.mail.smtp.SMTPAddressFailedException: 550 relay not permitted" matches much better.

javax.mail.AuthenticationFailedException: 535 5.7.3 Authentication unsuccessful

I am sending e email using an SMTP error . I am getting Authentication unsuccessful. The username and password are correct. Am I doing something wrong.
The error logs are
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class EmailSender{
public static void main(String args[]) {
String to = "ssss#xxx.om"; // sender email
String from = "dddd#xxx.com"; // receiver email
String host = "dkdkdd.xxx.com"; // mail server host
String login="dkkdkd";
String pass="dkkdkd";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
properties.setProperty("mail.smtp.user", login);
properties.setProperty("mail.smtp.password", pass);
properties.setProperty("mail.smtps.ssl.enable", "true");
// properties.setProperty("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(properties); // default session
try {
MimeMessage message = new MimeMessage(session); // email message
message.setFrom(new InternetAddress(from)); // setting header fields
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject("Test Mail from Java Program"); // subject line
// actual mail body
message.setText("You can send mail from Java program by using");
// Send message
Transport transport = session.getTransport("smtp");
transport.connect(host, login, pass);
Transport.send(message);
System.out.println("Email Sent successfully....");
} catch (MessagingException mex) {
mex.printStackTrace();
}
}
}
The error is
DEBUG SMTP: AUTH NTLM failed
Exception in thread "main" javax.mail.AuthenticationFailedException: 535 5.7.3 Authentication unsuccessful
at com.sun.mail.smtp.SMTPTransport$Authenticator.authenticate(SMTPTransport.java:826)
at com.sun.mail.smtp.SMTPTransport.authenticate(SMTPTransport.java:761)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:685)
at javax.mail.Service.connect(Service.java:317)
at javax.mail.Service.connect(Service.java:176)
at javax.mail.Service.connect(Service.java:125)
at javax.mail.Transport.send0(Transport.java:194)
at javax.mail.Transport.send(Transport.java:124)

Had the same issue. It's an MS Exchange error that you receive. You are probably not allowed to use your email to send an email via a relay. The administrator of the Exchange server needs to give the rights to do that.
It has nothing to do with a configuration problem on the Java side.

It looks like the problem in how you do the session part...
try doing this:
private Properties emailPorperties;
...
...
emailPorperties = new Properties();
emailPorperties.put("mail.smtp.host", "your host");
emailPorperties.put("mail.smtp.socketFactory.port", "your port");
emailPorperties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
emailPorperties.put("mail.smtp.auth", "true");
emailPorperties.put("mail.smtp.port", "your port");
emailPorperties.put("mail.smtp.ssl.enable", "true");
emailSession = Session.getInstance(emailPorperties, new Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
System.out.println("Authenticating");
return new PasswordAuthentication(USER_NAME, PASSWORD);
}
});

Hello i've got the same issue in the past.
So to solve it i have to connect on the webmail of my outlook or exchage and i noticed that these connexions were stopped by the server so inside i confirm that these transactions was mine.
So u have also to do it usually every 2 month in my case.
The problem is not in the code. The problem occurs because something is wrong with the configuration of the mailboxes I believe.

Same issue resolve by enabling IMAP of the sender email account in Exchange Control Panel (ECP) of outlook mail admin.

Go to your Microsoft admin account and turn off the multi-factor authentication.
By default it is enabled. Once you disable the multi-factor authentication then it works fine for me.

I had a similar issue and in my case, the issue was 'outlook password got expired'.
As I had it logged in default I did not have any issue while logging in to my mail.
I tried logging in to incognito mode and see if my logging asked for an additional layer for logging like multi-factor auth, And when logged in from the incognito tab it asked to change the password with a popup stating 'password got expired'.
I then updated the new password and it started to work fine !!

Send Java email without authentication (no such provider exception: smtp)

The code I am currently using is as follows:
String to = "....#gmail.com";
String from = ".....#gmail.com";
String host = "127.0.0.1";
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session session = Session.getDefaultInstance(properties);
try {
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,
new InternetAddress(to));
message.setSubject("This is the Subject Line!");
message.setText("This is actual message");
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException mex) {
mex.printStackTrace();
}
If I paste the above code in my Java servlet and run it, the following exception gets thrown:
javax.mail.NoSuchProviderException: smtp
I have also tried following the solutions outlined in these resources but to no avail: link1 link2 link3 link4.

It would help if you included the the full stacktrace for the javax.mail.NoSuchProviderException and JavaMail debug output. Because you are running this in a servlet container you could be running into Bug 6668 -skip unusable Store and Transport classes. Change your call to Transport.set to the following:
final ClassLoader ccl = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(Session.class.getClassLoader());
try {
Transport.send(message);
} finally {
Thread.currentThread().setContextClassLoader(ccl);
}
That code will isolate which transport class the code is allowed to see. That will rule out that bug in your code.

NoSuchProviderException means something is messed up in your JavaMail API configuration. Where and how have you installed the JavaMail jar file?
Also, in case it's not clear from the other responses, the only way you're going to be able to send mail without authentication is if you're running your own mail server. You can't do it with general purpose online e-mail services (e.g. Gmail).

First of all, if you wanna use gmail to send emails from your program you need to define stmp host as gmail. Your current host "127.0.0.1" is localhost meaning your own computer? Do you have mail server running on your computer?
Here you can see some tutorial how to send an email using gmail: http://www.mkyong.com/java/javamail-api-sending-email-via-gmail-smtp-example/
If you're afraid to pass your normal gmail account details then create some kind of test email like kselvatest or something.
You are missing pretty much those:
final String username = "username#gmail.com";
final String password = "password";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
So basicly all you need to add is:
1.login and password so JavaMail can use some gmail account
2.declare which mail server you wanna use
change String host = "127.0.0.1"; to String host = "smtp.gmail.com";
3.set mail port

For this code you should get javax.mail.MessagingException: Could not connect to SMTP host: 127.0.0.1, port: 25; exception
But I suspect you have a jre issue. May be smtp implementation has a problem. Why don't you download java mail implementation from http://www.oracle.com/technetwork/java/javamail/index-138643.html and add it to your project class path and try?

Not Receiving email sent by localhost Mercury mail

I am using XAMPP for deploying my java application in tomcat and also using mercury mail to ssend emails. Now i am just testing my application with a small java program using java mail API and mercury email. I havee done the necessary configuration in Mercury to setup localhost. My program is running successfully without any error. Also Mercury log file doesn't say anything about any error.
T 20130411 044359 51663963 Connection from 127.0.0.1
T 20130411 044359 51663963 EHLO 10.226.44.101
T 20130411 044359 51663963 MAIL FROM:<promil#localhost.com>
T 20130411 044359 51663963 RCPT TO:<*****#gmail.com>
T 20130411 044359 51663963 DATA
T 20130411 044359 51663963 DATA - 22 lines, 689 bytes.
T 20130411 044359 51663963 QUIT
T 20130411 044359 51663963 Connection closed with 127.0.0.1, 0 sec. elapsed.
Also this is my java file....
public static void main(String [] args)
{
// Recipient's email ID needs to be mentioned.
String to = "****#gmail.com";
// Sender's email ID needs to be mentioned
String from = "promil#localhost.com";
// Assuming you are sending email from localhost
String host = "localhost";
String password = "****";
// Get system properties
Properties properties = System.getProperties();
// Setup mail server
properties.setProperty("mail.smtp.host", host);
// Setup mail server
properties.setProperty("mail.smtp.password", password);
// 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!");
// Create the message part
BodyPart messageBodyPart = new MimeBodyPart();
// Fill the message
messageBodyPart.setText("This is message body");
// Create a multipar message
Multipart multipart = new MimeMultipart();
// Set text message part
multipart.addBodyPart(messageBodyPart);
// Part two is attachment
messageBodyPart = new MimeBodyPart();
String filename = "C:/Users/toshiba/Desktop/file.txt";
DataSource source = new FileDataSource(filename);
messageBodyPart.setDataHandler(new DataHandler(source));
messageBodyPart.setFileName(filename);
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();
}
I am absolutely clueless about it.....
Also my Mercury core process says it has 4 pending outgoing jobs....???

The destination address is at gmail. You haven't clarified if the mail was supposed to be delivered locally or at gmail, so I'm going to assume you meant the mail to go to a Gmail account, which you've (correctly) obfuscated in your post.
The session transcript you posted is between your Java client and the local Mercury mail server. All this says is that the local Mercury mail server accepted the mail from your Java client.
The session transcript contains no information about what happened to the mail after your local Mercury mail server accepted it. If the local configuration was correctly set up, then Mercury mail should have tried to forward the mail by looking up the MX record for Gmail and connecting to one of the servers returned by the MX lookup.
For further information you will have to look at the Mercury server's logs to see if it attempted to deliver the message.
A guess:
Your Mercury mail server attempted to deliver the mail, but Gmail rejected it because the computer you are running on has an ISP-assigned DHCP (dynamic) address. A large volume of SPAM originates from such addresses, and many mail hosts refuse to even talk to these mail sources. In any event, if Gmail rejected it, Mercury mail is required to "bounce" it back to the sender. However, you probably have not set up an incoming mailbox for promil#localhost.com, so it had no place to store the bounce and just discarded it. Again, check the Mercury mail logs for details.
That's the best answer anyone can give based on the information you have provided.

Error in Sending mail by Java

My code is :
// File Name SendEmail.java
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 = "toEmail#gmail.com";
// Sender's email ID needs to be mentioned
String from = "fromEmail#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();
}
}
}
My program was working correctly last night; I could send email from any address to any other, but now this error is occuring:
javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;
nested exception is:
java.net.ConnectException: Connection refused
at javax.mail.Transport.send0(Transport.java:218)
at javax.mail.Transport.send(Transport.java:80)
at SendEmail.main(SendEmail.java:49)
Line 49 is:
Transport.send(message);
Can anyone help me fix this error?
My operating system is : Linux,Fedora 16 -kernel: 3.3.7

Could not connect to SMTP host: localhost, port: 25;
SMTP must be not running on your system or disabled for you as user. Check with your system administrator and get it enabled for you.
To check if SMTP is working on your Linux system, try the following commands:
To simply verify Sendmail is running, try: netstat -an | grep 25
Use telnet to connect to port 25 of smtp server: telnet <yourhost-or-ipnumber> 25
a. Connecting To localhost...Could not open connection to the host, on port 25: Connect failed.
b. if you or your ip is blocked, you would see error message something like this:
220-localhost ESMTP Exim 4.63 #1 Fri, 01 Jun 2012 19:35:30 +0530
220-We do not authorize the use of this system to transport unsolicited, and/or bulk e-mail.
echo -e "quit" | nc localhost 25
localhost.localdomain [127.0.0.1] 25 (?) : Connection refused
mail at shell prompt.
and, may be more...
You should check that sendmail daemon is started and is available always.
And if you have access to any other SMTP servers, try to send mail using their SMTP host name, to check if your code snippet is working.
Example : String host = "smtp.gmail.com";

it was because my SendMail Service Stopped working.
to enable it : try this command in shell(as root).
service sendmail start

U on right way..just change Property setting and Session sentence .my java mail work Fine...
final String username = "abc#gmail.com";
final String password = "****";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.port", "587");
Session session = Session.getInstance(props, new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});