Using gmx smtp server with java mail

Question

I want to use the gmx smtp server to send some mails with java mail. All i get is this exception, the page which i should review in the exception doesnt provide me information how to fix this issue.

com.sun.mail.smtp.SMTPSendFailedException: 553 5.1.7 Complete address with domain, please ( http://portal.gmx.net/serverrules ) {mp032}
;
  nested exception is:
        com.sun.mail.smtp.SMTPSenderFailedException: 553 5.1.7 Complete address with domain, please ( http://portal.gmx.net/serverrules ) {mp032}

I implemented it in Java as following:

props = new Properties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", "mail.gmx.net");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
props.put("mail.from", "test@test.test);
props.put("username", "SOMEUSERNAME@gmx.at");
props.put("password", "SOMEPASS");
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.debug", "true");

Authenticator auth = new SMTPAuthenticator(props.getProperty("username"), props.getProperty("password"));


    if ("true".equals(smtp.getSmtpAuth())) {
        mailSession = Session.getDefaultInstance(props, auth);
    } else {
        mailSession = Session.getDefaultInstance(props);
    }


}

class SMTPAuthenticator extends Authenticator {

    private String username, password;

    public SMTPAuthenticator(String username, String password) {
        this.username = username;
        this.password = password;
    }

    @Override
    public PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(username, password);
    }
}

BullyWiiPlaza BullyWiiPlaza · Accepted Answer · 2016-12-12T14:17:23

Here is working code for sending an email with GMX:

public static void sendGMX() throws MessagingException
{
    String sender = "my.email@gmx.de";
    String password = "my.password";
    String receiver = "my-receiver@gmail.com";

    Properties properties = new Properties();

    properties.put("mail.transport.protocol", "smtp");
    properties.put("mail.smtp.host", "mail.gmx.net");
    properties.put("mail.smtp.port", "587");
    properties.put("mail.smtp.auth", "true");
    properties.put("mail.smtp.user", sender);
    properties.put("mail.smtp.password", password);
    properties.put("mail.smtp.starttls.enable", "true");

    Session mailSession = Session.getInstance(properties, new Authenticator()
    {
        @Override
        protected PasswordAuthentication getPasswordAuthentication()
        {
            return new PasswordAuthentication(properties.getProperty("mail.smtp.user"),
                    properties.getProperty("mail.smtp.password"));
        }
    });

    Message message = new MimeMessage(mailSession);
    InternetAddress addressTo = new InternetAddress(receiver);
    message.setRecipient(Message.RecipientType.TO, addressTo);
    message.setFrom(new InternetAddress(sender));
    message.setSubject("The subject");
    message.setContent("This is the message content", "text/plain");
    Transport.send(message);
}

Note

You have to manually enable POP3/IMAP support in your e-mail account otherwise you will still get an AuthenticationFailedException exception:

Exception in thread "main" javax.mail.AuthenticationFailedException: 535 Authentication credentials invalid

    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:253)
    at javax.mail.Transport.send(Transport.java:124)

Using gmx smtp server with java mail

2 Answers

Note