Javamail不發送郵件

Question

我正在開發Java應用程序，並且正在使用Javamail發送郵件。 我的代碼如下：

Properties props = new Properties();
props.put("mail.smtp.host", "diana.cartif.es");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");

Session session = Session.getDefaultInstance(props,
    new javax.mail.Authenticator() {
        protected PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("alerts","pass");
        }
    });

Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("alerts@cartif.es"));
message.setRecipients(Message.RecipientType.TO,InternetAddress.parse("campus21@cartif.es"));
message.setSubject("Testing Subject");
message.setText("Dear Mail Crawler," +"\n\n No spam to my email, please!");

Transport.send(message);

但是，當我執行此代碼時，它將引發異常：

javax.mail.MessagingException: Could not connect to SMTP host: diana.cartif.es, port: 465, response: -1
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1960)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:642)
    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:194)
    at javax.mail.Transport.send(Transport.java:124)
    at com.cartif.data.MainConnection.getFTPConnection(MainConnection.java:106)
    at com.cartif.main.Main.connectToServer(Main.java:72)
    at com.cartif.main.Main.main(Main.java:60)

連接的數據正確，因為我在郵件服務器中檢查了它。 有人可以幫我嗎？

謝謝！

Answer 1

嘗試這樣的事情：

     String  d_email = "email",
             d_password = "pass";

    Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.server");
    props.put("mail.smtp.user", d_email);
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.port", port);

    Authenticator auth = new SMTPAuthenticator();
    Session session = Session.getInstance(props, auth);

Answer 2

擺脫socketFactory *屬性。 在大多數情況下，不再需要它們並添加

props.put("mail.smtp.ssl.enable", true);

嘗試致電：

session.setDebug(true);

看看是否有任何幫助。

如果您使用的是自簽名證書，請訪問： http : //www.oracle.com/technetwork/java/javamail145sslnotes-1562622.html

Answer 3

最后，我使用以下屬性解決了這個問題：

props.setProperty("mail.smtp.host", "smpt.host");
props.setProperty("mail.smtp.starttls.enable", "false");
props.setProperty("mail.smtp.port","25");
props.setProperty("mail.smtp.user", "alerts");
props.setProperty("mail.smtp.auth", "true");

Session session = Session.getDefaultInstance(props);
session.setDebug(true);

MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress("mail1@mail.es"));
message.addRecipient(Message.RecipientType.TO, new InternetAddress("mail2@mail.es"));
message.setSubject("Subject");
message.setText("Text");

Transport t = session.getTransport("smtp");
t.connect("user","pass");
t.sendMessage(message,message.getAllRecipients());
t.close();