javaMail 异常:验证失败

源代码：

public static void sendMail() throws MessagingException{
Properties prop = new Properties();
prop.setProperty("mail.smtp.auth", "true");
prop.setProper("mail.transport.protocol", "smtp");
Session session = Session.getInstance(prop);
session.setDebug(true);

Message message = new MimeMessage(session);
message.setText("hello!");
message.setFrom(new InternetAddress("oureshop@sina.com"));

Transport transport = session.getTransport();
transport.connect("smtp.sina.com", 25, "oureshop", "123456");
transport.sendMessage(message,new Address[]{new InternetAddress("zoe0316@live.cn")});
transport.close();
}

异常：

EHLO Zoe-PC
250-irxd5-203.sinamail.sina.com.cn
250-8BITMIME
250-SIZE 52428800
250-AUTH PLAIN LOGIN
250 AUTH=PLAIN LOGIN