I am trying to send the mail through java code via gmail smtp server but facing java.net.SocketException: Connection Reset
Following is the code to send mails:-`
Properties props = new Properties();
props.put("mail.smtp.host",host); //host is smtp.gmail.com
if(host.equalsIgnoreCase("smtp.gmail.com"))
{
props.put("mail.smtp.socketFactory.port",port);
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port",port);//port is 465
}
else
{
props.put("mail.smtp.auth", "true");
}
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(uname,pwd);
}
});
try {
session.setDebug(true);
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(uname));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(toMail));
message.setSubject(NewFolderName);
System.out.println("Composing message body.");
StringBuilder htmlStreamBuilder = new StringBuilder();
// we create some html string here.....
Multipart multipart = new MimeMultipart();
MimeBodyPart htmlPart = new MimeBodyPart();
MimeBodyPart attachmentPart= new MimeBodyPart();
DataSource source = new FileDataSource(filename);
attachmentPart.setDataHandler(new DataHandler(source));
attachmentPart.setFileName(KMAConstants.TESTNG_ATTACHMENT_FILE);
htmlPart.setContent(htmlStream, "text/html; charset=utf-8");//we give some html stream here ....
multipart.addBodyPart(htmlPart);
multipart.addBodyPart(attachmentPart);
message.setContent(multipart);
Transport.send(message);
} catch (MessagingException e)
{
System.out.println("Issue in message sending, MessagingExceptionn raised.");
e.printStackTrace();
throw e;
}
}
`
It throws the following error:- `
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Oracle] DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: useEhlo true, useAuth true DEBUG SMTP: trying to connect to host "smtp.gmail.com", port 465, isSSL false DEBUG SMTP: exception reading response, THROW: java.net.SocketException: Connection reset at java.net.SocketInputStream.read(SocketInputStream.java:209) at java.net.SocketInputStream.read(SocketInputStream.java:141) at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:124) at java.io.BufferedInputStream.fill(BufferedInputStream.java:246) at java.io.BufferedInputStream.read(BufferedInputStream.java:265) at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:89) at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:2184) at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1939) at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:654) at javax.mail.Service.connect(Service.java:367) at javax.mail.Service.connect(Service.java:226) at javax.mail.Service.connect(Service.java:175) at javax.mail.Transport.send0(Transport.java:253) at javax.mail.Transport.send(Transport.java:124) at com.rsi.kma.common.utils.KmaUtil.sendMailNow(KmaUtil.java:1907) at com.rsi.kma.ui.testconfigureui.FileProcessingTask.call(FileProcessingTask.java:401) at com.rsi.kma.ui.testconfigureui.FileProcessingTask.call(FileProcessingTask.java:1) at javafx.concurrent.Task$TaskCallable.call(Task.java:1423) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.lang.Thread.run(Thread.java:745) Issue in message sending, MessagingExceptionn raised.
`
An important point to note here is that this code works on some computers.
Please help me out, Thanks in advance.
