java 如何正确设置 javamail 以使用 STARTTLS？
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How do I properly setup javamail to use STARTTLS?
提问by Knoxie
When setting up my session I am setting the starttls.enable and .required properties but when the connection happens it should fail according to the documentation:
在设置我的会话时，我正在设置 starttls.enable 和 .required 属性，但是当连接发生时，它应该会根据文档失败：
mail.smtp.starttls.enable boolean If true, enables the use of the STARTTLS command (if supported by the server) to switch the connection to a TLS-protected connection before issuing any login commands. Note that an appropriate trust store must configured so that the client will trust the server's certificate. Defaults to false." http://javamail.kenai.com/nonav/javadocs/com/sun/mail/smtp/package-summary.html
mail.smtp.starttls.enable boolean 如果为 true，则启用 STARTTLS 命令（如果服务器支持）在发出任何登录命令之前将连接切换到受 TLS 保护的连接。请注意，必须配置适当的信任库，以便客户端信任服务器的证书。默认为 false。” http://javamail.kenai.com/nonav/javadocs/com/sun/mail/smtp/package-summary.html
props = new Properties();
props.put("mail.smtps.host", MAILSERV);
props.put("mail.smtps.socketFactory.port", 465);
props.put("mail.smtps.auth", "true");
props.put("mail.smtps.port", 465);
props.put("mail.smtps.socketFactory.fallback", "false");
props.put("mail.smtps.socketFactory.class","utils.DummySSLSocketFactory");
props.put("mail.smtps.quitwait", "false");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.starttls.required", "true");
Session session = Session.getInstance(props, authenticator);
transport = session.getTransport("smtps");
transport.connect(mailServer, port, username, password);
transport.sendMessage(message, message.getAllRecipients());
So what am I doing wrong that is allowing me to use Starttls when its not supported by the server?
那么我做错了什么，允许我在服务器不支持的情况下使用 Starttls？
回答by Knoxie
The issue I was having with STARTTLS was caused by me getting a secure transport:
我在使用 STARTTLS 时遇到的问题是由于我获得了安全传输：
transport = session.getTransport("smtps");
After changing it to "smtp" i was able to use STARTTLS.
将其更改为“smtp”后，我可以使用 STARTTLS。
