10

Here is my code

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 MailSendClass { public static void main (String [] args){ // Recipient's email ID needs to be mentioned. String to = "[email protected]"; // Sender's email ID needs to be mentioned String from = "[email protected]"; // 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("Thanks for registering on our website!"); // Now set the actual message message.setText("Welcome To Job Portal !!!! Again Thanks "); // Send message Transport.send(message); System.out.println("Sent message successfully...."); }catch (MessagingException mex) { mex.printStackTrace(); } } }

And I am getting this error everytime

javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25; nested exception is: java.net.ConnectException: Connection refused: connect at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1706) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:525) at javax.mail.Service.connect(Service.java:291) at javax.mail.Service.connect(Service.java:172) at javax.mail.Service.connect(Service.java:121) at javax.mail.Transport.send0(Transport.java:190) at javax.mail.Transport.send(Transport.java:120) at MailSendClass.main(MailSendClass.java:58) Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:79) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:589) at java.net.Socket.connect(Socket.java:538) at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:284) at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:227) at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1672) ... 7 more BUILD SUCCESSFUL (total time: 3 seconds)

I am not getting the error why this is happening. Please help me in fixing this error.

Improve this question
3
  • 1
    what is the local smtp server please ? Commented Oct 1, 2015 at 8:15
  • 2
    It might be obvious, but do you have a mailserver running on your development machine which is actually listening to localhost? Commented Oct 1, 2015 at 8:15
  • apache tomcat server Commented Oct 1, 2015 at 8:25

5 Answers 5

Reset to default
4

Error is self explainatory: javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25;

You have no SMTP server on localhost, but you configure it there :

 // Assuming you are sending email from localhost String host = "localhost"; ... // Setup mail server properties.setProperty("mail.smtp.host", host);

So you must:

  • either configure a local SMTP server as a relay on your local system (Postfix or sendmail are two well knows servers)
  • of configure a dummy server that simply traces the mail request but does not even try to deliver mail (Python is known to have such dummy servers out of the box)
  • or configure your application with a server that you are allowed to use - contact your system admin in a corporate environment, or your ISP in an individual one. Anyway, you will need that even to configure a true relay.
Improve this answer
Sign up to request clarification or add additional context in comments.

4 Comments

I am using GlassFish server in my application.
@KetanGupta: AFAIK GlassFish is not a SMTP server... Just try telnet localhost 25 at command line, if you get an error, no SMTP server is running locally.
i am not getting you completely .Please give me complete answer because i don't know about these things .
@KetanGupta: Apache is a HTTP server, it knows how to deal with HTTP or HTTPS requests and send back resources or relay request to another HTTP[S] server. Tomcat or GlassFish are HTTP servlet containers, they know how to deal with HTTP requests and pass them to servlets and filters. Postfix or sendmail know how to process SMTP requests (default port 25). It is a different protocol and is processed by different server applications. Do you know how to send mail from the development machine, and how the local mailer is configured?
3

Here is the working solution bro. it's guranteed

1) First of all open your gmail account from which you wanted to send mail, like in you case ""[email protected]"

2) open this link below https://support.google.com/accounts/answer/6010255?hl=en

3) click on "Go to the "Less secure apps" section in My Account." option

4) Then turn on it

5) that's it (:

Improve this answer

Comments

3

You should use the free Google SMTP server as a test.

mail.host=smtp.gmail.com mail.username=//your gmail mail.password=//your password mail.defaultEncoding=UTF-8 mail.smtp.auth=true mail.smtp.starttls.required=true mail.smtp.starttls.enable=true mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory mail.smtp.socketFactory.fallback=false mail.smtp.port=465 mail.smtp.socketFactory.port=465

Next, login with your gmail , and turn on less secure apps.

Improve this answer

1 Comment

First, don't set those socketFactory properties, they're not needed. Second, there is no mail.password property, nor a mail.defaultEncoding property. Read the JavaMail FAQ for the right way to use Gmail.
1

You should look at this two lines:

javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25; Caused by: java.net.ConnectException: Connection refused: connect

The error is: "There is nothing listening on localhost at port 25".

You are trying to use localhost:25 as mail server, but there is no server there.

Improve this answer

2 Comments

What is the solution of this problem?
Configure the local smtp server on your machine correct. Maybe install postfix if it is a linux system.
-1

Just use this provided solution : javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 25

and make sure to turn on less secure app access on your google account.

Improve this answer

Comments

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.