javamail

使用javamail遇到的连接问题收藏
产品中要使用javamail来发送邮件，我用163邮箱做测试。

先把163邮箱配置到foxmai中，收发邮件都没有问题。然后写了个测试程序，总是报

javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.com, port: 25;nested exception is:
java.net.ConnectException: Connection refused: connect

找了n久没有找到原因，后来网管告诉我 可以telnet smtp.163.com 25 试一下看能不能连通。

测试了下果然是不能通的，把McAfee关掉后问题立刻解决。

我本以为在foxmail中能正常收发邮件，就说明网络是通的，其实不是！

下附测试代码

import java.sql.Timestamp;
import java.util.Properties;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class TestMail ...{

    /** *//**
     * @param args
     */
    public static void main(String[] args) ...{

        String smtphost = "smtp.163.com"; // 发送邮件服务器
        String user = "fengguang1982"; // 邮件服务器登录用户名
        String password = "XXXXX"; // 邮件服务器登录密码
        String from = "[email protected]"; // 发送人邮件地址
        String to = "[email protected]"; // 接受人邮件地址
        String subject = "javamail测试"
                + (new Timestamp(System.currentTimeMillis())); // 邮件标题
        String body = "Java Mail Body!"; // 邮件内容
        Properties props = new Properties();
        props.put("mail.smtp.host", smtphost);
        props.put("mail.smtp.auth", "true");
        Session ssn = Session.getInstance(props, null);

        MimeMessage message = new MimeMessage(ssn);

        try ...{
            InternetAddress fromAddress = new InternetAddress(from);
            message.setFrom(fromAddress);
            InternetAddress toAddress = new InternetAddress(to);
            message.addRecipient(Message.RecipientType.TO, toAddress);

            message.setSubject(subject);
            message.setText(body);

            Transport transport = ssn.getTransport("smtp");
            transport.connect(smtphost, user, password);
            transport.sendMessage(message, message
                    .getRecipients(Message.RecipientType.TO));
            //transport.send(message);
            transport.close();
            System.out.println("mail has been send");
        } catch (MessagingException e) ...{
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

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