java - 不能用Java发送邮件

Question

我正在尝试用 java 发送邮件，但我不断收到此错误“com.sun.mail.smtp.SMTPSendFailedException:550 未能满足 SPF 要求”，我已经搜索了互联网，看看是否有其他人遇到过这个问题java，一无所获。任何人都知道这个错误意味着什么？我发送电子邮件的代码如下。

            //Create session and message
            Properties props = System.getProperties();
            props.put("mail.smtp.user", user);
            props.put("mail.smtp.password", password);
            props.put("mail.smtp.auth", "false");
            props.put("mail.smtp.host", mailhost);

            javax.mail.Authenticator auth = null;
            auth = new javax.mail.Authenticator() {
                @Override
                public javax.mail.PasswordAuthentication getPasswordAuthentication() {
                    return new javax.mail.PasswordAuthentication(user, password);
                }
            };
            session = Session.getInstance(props, auth);
            Message msg = new MimeMessage(session);

           //Set from,recipients,content and other stuff here
           //...................

           //Send the message
           Transport.send(msg);

Answer 1

通过将“mail.smtp.auth”属性设置为 true 并添加属性“mail.smtp.ssl.enable”并将其设置为 true 然后最终而不是使用下面的静态方法发送消息。

Transport.send(Message msg) 

我在从 session 对象获取的传输对象上使用实例方法来发送消息。

transport.sendMessage(Message msg, Address[] addresses)  

下面是修改后的工作代码。

       //Create session
        Properties props = System.getProperties();
        props.put("mail.smtp.user", user);
        props.put("mail.smtp.password", password);
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.host", mailhost);
        props.put("mail.smtp.ssl.enable", "true");


        javax.mail.Authenticator auth = null;
        auth = new javax.mail.Authenticator() {
            @Override
            public javax.mail.PasswordAuthentication getPasswordAuthentication() {
                return new javax.mail.PasswordAuthentication(user, password);
            }
        };
        session = Session.getInstance(props, auth);
        //get transport object from session and connect to mail server
        Transport tr = session.getTransport("smtp");
        tr.connect(session.getProperty("mail.smtp.host"),  session.getProperty("mail.smtp.user"), session.getProperty("mail.smtp.password"));

        //create message  and set from,recipients,content and other stuff here on the message object.
        Message msg = new MimeMessage(session);
       //..................
       //...................

       //Save and send the message
        msg.saveChanges();
        tr.sendMessage(msg, msg.getAllRecipients());
        tr.close();

此链接确实帮助我解决了问题:http://javamail.java.net/nonav/docs/api/com/sun/mail/smtp/package-summary.html