Javax.mail.MessagingException: Could not connect to SMTP host:

Question

here is a part of my code
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class Mail {
/** Creates a new instance of PostMail */
public Mail() {
public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException
boolean debug = false;
//Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", "smtp."_____".com");
// create some properties and get the default Session
Session session = Session.getDefaultInstance(props, null);
session.setDebug(debug);
// create a message
Message msg = new MimeMessage(session);
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
InternetAddress[] addressTo = new InternetAddress[recipients.length];
for (int i = 0; i < recipients.length; i++)
addressTo[i] = new InternetAddress(recipients);
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Optional : You can also set your custom headers in the Email if you Want
msg.addHeader("MyHeaderName", "myHeaderValue");
// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
Transport.send(msg);
Here is the exception i rec'vd
javax.mail.MessagingException: Could not connect to SMTP host: smtp.google.com, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1282)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
at javax.mail.Service.connect(Service.java:275)
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)
at Mail.postMail(Mail.java:45)
at ArchMain.<init>(ArchMain.java:30)
at ArchMain$6.run(ArchMain.java:360)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:519)
at java.net.Socket.connect(Socket.java:469)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
... 17 more

Answer 1

package MailDao;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import java.io.*;
import java.text.*;
import java.text.DateFormat.* ;
import java.io.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.activation.*;
import javax.mail.search.*;
import java.util.Vector.*;
import java.sql.*;
public class SendMail {
String SMTP_HOST_NAME = "smtp.techpepstechnology.com";//smtp.genuinepagesonline.com"; //techpepstechnology.com";
String SMTP_AUTH_USER = "[email protected]"; //[email protected]"; //techpeps";
String SMTP_AUTH_PWD = "demo"; //techpeps2007";
public void postMail( String recipients[ ], String subject,
String message , String from,String msgType) throws MessagingException {
boolean debug = false;
Properties props = System.getProperties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", SMTP_HOST_NAME);
props.put("mail.smtp.auth", "true");
Authenticator auth = new SMTPAuthenticator();
Session session = Session.getInstance(props, auth);
session.setDebug(debug);
// create a message
MimeMessage msg = new MimeMessage(session);
// MimeMessage mimemessage = new MimeMessage(simplemailuser.getSession());
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
InternetAddress[] addressTo = new InternetAddress[recipients.length];
for (int i = 0; i < recipients.length; i++) {
addressTo[i] = new InternetAddress(recipients);
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Setting the Subject and Content Type
msg.setSubject(subject);
if(msgType.equalsIgnoreCase("")) {
//mimemessage.setText(s4);
msg.setContent(message, "text/plain");
else {
MimeBodyPart textBodyPart = new MimeBodyPart();
textBodyPart.setText(message);
MimeBodyPart fileBodyPart = new MimeBodyPart();
FileDataSource fds = new FileDataSource(msgType);
fileBodyPart.setDataHandler(new DataHandler(fds));
fileBodyPart.setFileName(fds.getName());
//step:5 create the multipart/container to hold the part
Multipart container = new MimeMultipart();
container.addBodyPart(textBodyPart);
container.addBodyPart(fileBodyPart);
//step:6 add the multipart to the actual message
msg.setContent(container);
try{
Transport transport=session.getTransport("smtp");
transport.connect();
transport.send(msg);
transport.close();
}catch(Exception e) {
e.printStackTrace();
private class SMTPAuthenticator extends javax.mail.Authenticator {
public PasswordAuthentication getPasswordAuthentication() {
String username = SMTP_AUTH_USER;
String password = SMTP_AUTH_PWD;
return new PasswordAuthentication(username, password);
public static void main(String arg[]) {
SendMail sm = new SendMail();
String[] s ={"[email protected]"};
try{
sm.postMail(s,"hello","This is testing of mail","[email protected]","");
catch(Exception e)
e.printStackTrace();
//sm.sendMsg("demo", "demo");
System.out.println("Mail Sent");
i also got the follwing error this code work fine in jcreator but i used this in netbeans it throws a exception
plz.....help
javax.mail.MessagingException: Could not connect to SMTP host: smtp.techpepstechnology.com, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:867)
Mail Sent
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:156)
at javax.mail.Service.connect(Service.java:256)
at javax.mail.Service.connect(Service.java:135)
at javax.mail.Service.connect(Service.java:87)
at com.sun.mail.smtp.SMTPTransport.connect(SMTPTransport.java:93)
at MailDao.SendMail.postMail(SendMail.java:86)
at MailDao.SendMail.main(SendMail.java:110)