问java email发: Couldn't connect to host？

代码：

import java.util.Properties;

import javax.mail.Authenticator;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.PasswordAuthentication;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

/**

* 使用SMTP协议发送电子邮件

*/

public class SendMailTest {

public static void main(String[] args) throws MessagingException {

// 1.创建一个程序与邮件服务器会话对象 Session

Properties props = new Properties();

props.setProperty("mail.transport.protocol", "SMTP");

props.setProperty("mail.smtp.host", "smtp.163.com");

props.setProperty("mail.smtp.port", "465");

// 指定验证为true

props.setProperty("mail.smtp.auth", "true");

props.setProperty("mail.smtp.timeout", "1000");

props.put("mail.smtp.ssl.enable", "true");

// 验证账号及密码，密码对应邮箱授权码（163密码可行，qq必须授权码）

Authenticator auth = new Authenticator() {

public PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication("xxxxx@163.com", "xxxx");

}

};

Session session = Session.getInstance(props, auth);

// 2.创建一个Message，它相当于是邮件内容

Message message = new MimeMessage(session);

// 设置发送者

message.setFrom(new InternetAddress("xxxxx@163.com"));

// 设置发送方式与接收者

message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress("xxxxx@qq.com"));

// 设置主题

message.setSubject("邮件发送测试");

// 设置内容

message.setContent("Hello!", "text/html;charset=utf-8");

// 3.创建 Transport用于将邮件发送

Transport.send(message);

}

}

报错：‘’

Exception in thread "main" com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.163.com, 465; timeout -1;

nested exception is:

java.net.ConnectException: Connection timed out: connect

at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2209)

at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:740)

at javax.mail.Service.connect(Service.java:388)

at javax.mail.Service.connect(Service.java:246)

at javax.mail.Service.connect(Service.java:195)

at javax.mail.Transport.send0(Transport.java:254)

at javax.mail.Transport.send(Transport.java:124)

at org.mark.demo.service.impl.SendMailTest.main(SendMailTest.java:48)