javax.mail.MessagingException : Could not connect to SMTP host-6ren

javax.mail.MessagingException : Could not connect to SMTP host

转载作者：行者123 更新时间：2023-11-29 09:18:54

<分区>

Possible Duplicate:
javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 25;

我试图通过 jsp 页面发送电子邮件，但它显示以下错误:

javax.mail.MessagingException: Could not connect to SMTP host: www.gmail.com, port: 25, response: 421

这是我用来发送电子邮件的代码:

<%
    try
    {
        String host = "www.gmail.com";
        String to = request.getParameter("to");
        String from = request.getParameter("from");
        String subject = request.getParameter("subject");
        String messageText = request.getParameter("body");
        boolean sessionDebug = false;

        Properties props = System.getProperties();
        props.put("mail.host", host);
        props.put("mail.transport.protocol", "smtp");
        Session mailSession = Session.getDefaultInstance(props, null);

        mailSession.setDebug(sessionDebug);

        Message msg = new MimeMessage(mailSession);
        msg.setFrom(new InternetAddress(from));
        InternetAddress[] address = {new InternetAddress(to)};
        msg.setRecipients(Message.RecipientType.TO, address);
        msg.setSubject(subject);
        msg.setSentDate(new Date());
        msg.setText(messageText);

        Transport.send(msg);
        out.println("Mail was sent to " + to);
        out.println(" from " + from);
        out.println(" using host " + host + ".");
    }
    catch (MessagingException mex) 
    {
        System.out.println("Error: unable to send message....");
        mex.printStackTrace();
    }
%>