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它可以在 Windows 机器上运行,但会抛出:com.sun.mail.util.MailConnectException: Couldn't connect to host, port: wo35.wiroos.host, 25; 超时-1;尝试在 Ubuntu 中发送电子邮件时。

我在 Windows 和 ubuntu 服务器中都使用 Tomcat。

我正在使用 javax.mail 版本 1.5.5

不工作的代码:

String host = "wo35.wiroos.host";

 public void sendEmail(String emailBody, String to) throws AddressException, MessagingException, UnsupportedEncodingException {
//Get the session object  
        Properties props = new Properties();
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true");

        Session session = Session.getInstance(props,
                new javax.mail.Authenticator() {

            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(user, pass);
            }
        });

        MimeMessage message = new MimeMessage(session);
        message.setFrom(new InternetAddress(user, "From"));
        message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
        message.setSubject("Subject");
        message.setText(emailBody);

        //send the message  
        Transport.send(message);

        System.out.println("Ok");
}
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