java - java间歇性发送电子邮件

Question

Properties props = new Properties();
    props.put("mail.smtp.host", "smtp.office365.com");
    props.put("mail.smtp.starttls.enable", "true");
    props.put("mail.smtp.auth", "true");
    //props.put("mail.smtp.socketFactory.class","javax.net.ssl.SSLSocketFactory");//As discussed but does not work if the leave
    props.put("mail.smtp.port", "587");



    Session session = Session.getInstance(props,
        new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication("mail@domi.cl","paswwd");
            }
        });

    try {

        Message message = new MimeMessage(session);
        message.setFrom(new InternetAddress("mail@domi.cl"));

        message.setRecipients(Message.RecipientType.TO,InternetAddress.parse("mail@domi.cl"));
        message.setSubject("Resumen envio masivo");
        message.setText(mensajeMail);

        Transport.send(message);

        System.out.println("Done");

    } catch (MessagingException e) {
        throw new RuntimeException(e);
    }

下面是堆栈跟踪:

Could not connect to SMTP host: smtp.office365.com, port: 587;
  nested exception is:
    java.net.ConnectException: Connection refused: connect
javax.faces.el.EvaluationException: java.lang.RuntimeException: javax.mail.MessagingException: Could not connect to SMTP host: smtp.office365.com, port: 587;
  nested exception is:
    java.net.ConnectException: Connection refused: connect

Answer 1

该异常意味着您无法连接到服务器 smtp.office365.com 上的端口 587。使用 telnet 验证这一点:

telnet smtp.office365.com 587

此功能在您所在位置不起作用的可能原因是:

Java 中的代理设置配置错误

如果它不起作用并且您位于公司网络中，则很可能是防火墙导致了问题。另请检查密码和电子邮件是否正确。

也许它也适用于 TLS。你应该尝试一下。