javax.mail.SendFailedException 发送邮件时地址无效

Question

我在使用 java 发送邮件时遇到问题，这是我的代码

package callcentersystem;

public class Email {

    private String topic = "my test";
    private String myMassage = "nothinge";

    public void untitledMethod(String to) {
        String host = "my ip adresse";
        Properties properties = System.getProperties();
        properties.setProperty("mail.smtp.host", host);
        Session session = Session.getDefaultInstance(properties);
        try {
            MimeMessage message = new MimeMessage(session);
            message.setFrom(new InternetAddress(utils.Constants.From));
            message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
            message.setSubject(topic);
            message.setText(myMassage);
            Transport transport = session.getTransport("smtp");
            transport.send(message);
            System.out.println("Sent message successfully....");
        } catch (MessagingException mex) {
            System.out.println("the massage didnt send");
            throw new RuntimeException(mex);
        }
    }
}

这是我的崩溃按摩

the massage didnt send
Exception in thread "main" java.lang.RuntimeException:        javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 530 SMTP authentication is required.

at callcentersystem.Email.untitledMethod(Email.java:33)
at callcentersystem.CallCenterSystem.main(CallCenterSystem.java:10)
Caused by: javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
com.sun.mail.smtp.SMTPAddressFailedException: 530 SMTP authentication is    required.

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1446)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:736)
at javax.mail.Transport.send0(Transport.java:191)
at javax.mail.Transport.send(Transport.java:120)
at callcentersystem.Email.untitledMethod(Email.java:29)
... 1 more
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 530 SMTP authentication is required.

at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1344)
... 5 more

我尝试了所有方法来解决这个问题，但它不起作用，我设置了一个 hmailserver 管理员，并使用它解决了我的本地主机问题

Answer 1

显然，该 SMTP 服务器需要身份验证凭据，从嵌套异常中可以清楚地看出:530 需要 SMTP 身份验证

您需要为 session 设置Authenticator实例:

...
Authenticatior authenticator =
         new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
               return new PasswordAuthentication(
                  "youruser@yourhost.com", "yourpassword");
            }
         };
Session session = Session.getDefaultInstance(properties, authenticator);
...

将 youruser@yourhost.com 和 yourpassword 更改为您尝试发送邮件的电子邮件服务器上的实际凭据。您需要在此服务器上有一个有效的帐户，因为它需要身份验证。

作为与问题无关的旁注，您确定要使用 Session.getDefaultInstance而不是Session.getInstance ？阅读有关影响的文档。