JavaMail mail.smtp.ssl.enable不工作

我在几个网站上阅读,当使用 JavaMail API时,将属性mail.smtp.ssl.enable设置为true.我有一些代码如下：

props.put("mail.smtp.host","exchangemail1.example.com");
props.put("mail.from","[e-mail]");
props.put("mail.smtp.starttls.enable","true");
// I tried this by itself and also together with ssl.enable)
props.put("mail.smtp.ssl.enable","true");

Session session = Session.getInstance(props,null);
MimeMessage msg = new MimeMessage(session);
msg.setFrom();
msg.setRecipients(Message.RecipientType.TO,"[e-mail]");  
    // also tried @gmail.com
msg.setSubject("JavaMail ssl test");
msg.setSentDate(new Date());
msg.setText("Hello,world!\n");
props.put("mail.smtp.auth","false");

Transport trnsport;
trnsport = session.getTransport("smtp");
trnsport.connect();
msg.saveChanges(); 
trnsport.sendMessage(msg,msg.getAllRecipients());
trnsport.close();

这会发送电子邮件,但是：

>当我做流量捕获,我看到它没有加密
>当使用debug(props.put(“mail.debug”,“true”))时,我看到“isSSL false”

(我也试过上面添加了props.put(“mail.smtp.auth”,“true”)用户/密码….)

任何想法我做错了什么？

解决方法

要使用SSL,您应该通过更改将协议从 SMTP更改为 SMTPS

trnsport = session.getTransport("smtp");

至

trnsport = session.getTransport("smtps");