JavaMail如何通过sina企业邮箱进行发送邮件？

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JavaMail如何通过sina企业邮箱进行发送邮件？5

JavaMail如何通过sina企业邮箱进行发送邮件？通过sina的免费邮箱完全可以正常发送，不知道为什么，谁可以帮我下！万分感谢！

下面是我的代码:

smtpAuth.getuserinfo("email@mlee.com.cn", "******");
Properties props = System.getProperties();

props.put("mail.smtp.auth", "true");
props.put("mail.smtp.host", "smtp.sina.com.cn");

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

Message msg = new MimeMessage(session);

msg.setDataHandler(new DataHandler(body,"text/html; charset=gb2312"));
msg.setFrom(new InternetAddress("email@mlee.com.cn","yangqr"));
msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to, 

false));


Transport t = session.getTransport("smtp");
t.connect("smtp.sina.com.cn", "email@mlee.com.cn", "******");
			
msg.setSubject(MimeUtility.encodeText(subject, "gb2312", "b"));
msg.setSentDate(new Date());
msg.setContent(body, "text/html; charset=GBK");
Transport.send(msg);

以下是控制台输出的信息：

DEBUG: setDebug: JavaMail version 1.3.1
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.sina.com.cn", port 25

220 mail5-203.sinamail.sina.com.cn ESMTP
DEBUG SMTP: connected to host "smtp.sina.com.cn", port: 25

EHLO yangqing-132788
250-mail5-203.sinamail.sina.com.cn
250-8BITMIME
250-SIZE 31457280
250-AUTH PLAIN LOGIN
250 AUTH=PLAIN LOGIN
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "SIZE", arg "31457280"
DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN"
DEBUG SMTP: Found extension "AUTH=PLAIN", arg "LOGIN"
DEBUG SMTP: Attempt to authenticate
AUTH LOGIN
334 VXNlcm5hbWU6
ZW1haWxAbWxlZS5jb20uY24=
334 UGFzc3dvcmQ6
MTIzNDU2
535 #5.7.0 Authentication failed
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "smtp.sina.com.cn", port 25

220 mail5-201.sinamail.sina.com.cn ESMTP
DEBUG SMTP: connected to host "smtp.sina.com.cn", port: 25

EHLO yangqing-132788
250-mail5-201.sinamail.sina.com.cn
250-8BITMIME
250-SIZE 31457280
250-AUTH PLAIN LOGIN
250 AUTH=PLAIN LOGIN
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "SIZE", arg "31457280"
DEBUG SMTP: Found extension "AUTH", arg "PLAIN LOGIN"
DEBUG SMTP: Found extension "AUTH=PLAIN", arg "LOGIN"
DEBUG SMTP: Attempt to authenticate
AUTH LOGIN
334 VXNlcm5hbWU6
ZW1haWxAbWxlZS5jb20uY24=
334 UGFzc3dvcmQ6
MTIzNDU2
535 #5.7.0 Authentication failed

设计模式