Nodemailer在cpanel中不起作用。任何人都遇到过这个问题

Question

我正在尝试将nodemailer用于表单，以便用户可以向我发送消息。它可以在我的本地端口上运行，但是一旦将网站托管在namecheap中。它根本不发送电子邮件。我想念什么？这是我的代码：

// POST route from contact form
var transporter = nodemailer.createTransport(smtpTransport({
service: 'Gmail',
auth: {
   user: process.env.GMAIL_USER,
   pass: process.env.GMAIL_PASS
}
}));

 app.post('/contact-submit', (req, res) => {
  console.log('/contact-submit', req.body)

 var mailOptions = {
   from: 'danielladevoto@gmail.com',
   to: 'danielladevoto@gmail.com',
   subject: req.body.subject,
   text: req.body.message,
   replyTo: req.body.email
 };

 transporter.sendMail(mailOptions, function (error, info) {
   if (error) {
      console.log(error);
   } else {
     console.log('Email sent: ' + info.response);
   }
  });
   console.log(req.body);
   res.end('Submitted')
  });

谢谢！