Error In Sending Mail through SMTP from Cpanel

Question

I am trying to send a mail to a gmail as smpt from my host service but stacktrace says

com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 587;

Though the code is working fine when executed on my Eclipse IDE. I asked hosting services if there any firewall that could be stopping the same. But they denied it by saying that your ip is not blocked in firewall and given port is also open on server and able to connect to the remote servers. Then what could be the reason for the problem. Here is the code

final String username = "xyz@gmail.com";
        final String password = "abcd";
        Properties properties = System.getProperties();
        properties.put("mail.smtp.auth", "true");
        properties.put("mail.smtp.starttls.enable", "true");
        properties.put("mail.smtp.host", "smtp.gmail.com");
        properties.put("mail.smtp.port", "587");
        Session session = Session.getInstance(properties,
                new javax.mail.Authenticator() {
                    protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
                        return new javax.mail.PasswordAuthentication(username,
                                password);
                    }
                });
        out.print(session);
        response.setContentType("text/html");
        try {
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress("xyz@gmail.com"));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(
                    "abc@gmail.com"));
            message.setSubject("hello");
            message.setText("this is me");
            Transport.send(message);

        } catch (MessagingException mex) {
            out.print(mex);
        }

    }

Can you include one more properties and try again? `properties.put("mail.transport.protocol", "smtps");` — Ataur Rahman Munna, Mar 13 '16 at 05:32
Have you tried logging into a shell on the host machine and establishing a telnet connection to the destination address on port 587? — Richard Schwartz, Mar 13 '16 at 05:33
@RichardSchwartz No I didn't. And i don't konw exactly how to do it. Could you be more specific :) — Mayank Vaid, Mar 13 '16 at 05:41
In my case i used for initializing msg as, don't sure if that works. `Message message = new MimeMessage(session);` — Ataur Rahman Munna, Mar 13 '16 at 05:48
check this http://stackoverflow.com/questions/27614793/error-in-sending-email-through-smtp — sameera sy, Mar 13 '16 at 09:44
I disable all security and still no success. Host service says that firewall allows all three ports so Its a development side issue @sameerasy — Mayank Vaid, Mar 13 '16 at 11:57
Log into a shell on your hosted system. Try the command 'telnet smtp.gmail.com 25'. Does the connection succeed? You should get a response that starts with something like this: '220 smtp.gmail.com ESMTP' — Richard Schwartz, Mar 13 '16 at 16:44

Error In Sending Mail through SMTP from Cpanel

0 Answers0