Java邮件可以使用gmail作为主机，但不能使用godaddy

Question

我目前正在开发忘记密码功能，我正在使用javax.mail。我尝试使用smtp.gmail.com作为我的主机，它在本地和实时服务器上都工作得很好。在下面的链接中，您可以看到有一个mailed-by and signed-by gmail。

Image

但是，使用smtpout.secureserver.net只能在本地服务器上工作。

在实时服务器中，它显示为Could not connect to SMTP host: smtpout.secureserver.net, port: 465, response: 554。而且，即使在本地服务器上查看电子邮件时，我也看不到signed-by and mailed-by。

我真的需要从GoDaddy购买证书才能看到signed-by and mailed-by吗？另外，这可能是它不能在实时服务器上工作的原因吗？很抱歉，我真的是个新手。

代码如下：

public class Mailer {
    Message message;
    Transport transport;
    Properties props;

    private String userName = "my@email.com";
    private String passWord = "password@123";
    private String protocol = "smtp";
    private String host = "smtpout.secureserver.net";
    private String port = "465";
    private String socketFactoryClass = "javax.net.ssl.SSLSocketFactory";


    private final String
        MAIL_SMTP_START_TLS_ENABLE          =           "mail.smtp.starttls.enable",
        MAIL_SMTP_AUTH                      =           "mail.smtp.auth",
        MAIL_TRANSPORT_PROTOCOL             =           "mail.transport.protocol",
        MAIL_DEBUG                          =           "mail.debug",
        MAIL_SMTP_PORT                      =           "mail.smtp.port",
        MAIL_SMTP_HOST                      =           "mail.smtp.host",
        MAIL_SMTP_SOCKETFACTORY_PORT        =           "mail.smtp.socketFactory.port",
        MAIL_SMTP_SOCKETFACTORY_CLASS       =           "mail.smtp.socketFactory.class",
        MAIL_SMTP_SSL_ENABLE                =           "mail.smtp.ssl.enable";

 public Mailer() {
        setProperties();
    }

    public void setProperties() {
        props = System.getProperties();
        props.put(MAIL_SMTP_AUTH, true);
//      props.put(MAIL_SMTP_START_TLS_ENABLE, true);
        props.put(MAIL_DEBUG, true);
        props.put(MAIL_TRANSPORT_PROTOCOL, protocol);
        props.put(MAIL_SMTP_PORT, port);
        props.put(MAIL_SMTP_HOST, host);
        props.put(MAIL_SMTP_SSL_ENABLE, true);

//      props.put(MAIL_SMTP_SOCKETFACTORY_PORT, String.valueOf(port) );
//      props.put(MAIL_SMTP_SOCKETFACTORY_CLASS, socketFactoryClass);       
    }

public void sendPasswordToEmail (String recipientEmail, User user) throws Exception {
    Session session = Session.getInstance(props,null);
    MimeMessage message = new MimeMessage(session);

    try {
        message.setFrom(new InternetAddress(userName));
        message.addRecipients(Message.RecipientType.TO, InternetAddress.parse(recipientEmail));         
        message.setSubject("Forgot Password Request");

        StringBuffer messageBuffer = new StringBuffer();
        messageBuffer.append("<html><h3>My Web App Portal</h3>");        
        messageBuffer.append("Here's your login details: <br><br>");
        messageBuffer.append("<b>Username:</b> "+user.getLoginUser()+"<br>");
        messageBuffer.append("<b>Password:</b> "+user.getPassword()+"<br><br> </html>");
        message.setContent(messageBuffer.toString(), "text/html; charset=utf-8");

        message.setSentDate(new Date());

        Transport transport = session.getTransport("smtp");
        transport.connect(host, userName, passWord);
        transport.sendMessage(message, message.getAllRecipients());
        transport.close();

    }catch(AuthenticationFailedException ex) {
        System.out.println(ex.getMessage());
    }
}

非常感谢。

Answer 1

我在SpringBoot中的配置(将domainname.com替换为您的域名和密码)

spring:
  mail:
    host: smtpout.secureserver.net
    port: 465
    username: info@domainname.com
    password: password
    protocol: smtp
    properties.mail.smtp:
      auth: true
      ssl.enable: true
      ssl.trust: "*"

在发送邮件之前，我必须添加mimeMessageHelper.setFrom("info@domainname.com"); (否则它会获取我的系统名称并给出一个错误)，并且此设置可以正常工作。