用4078代码解决Sendgrid节点错误

Question

我写电子邮件课程：

const pug = require('pug')
const nodemailer = require('nodemailer');
const htmlToText = require('html-to-text');

module.exports = class Email{
   constructor(user, url) {
      this.to = user.email;
      this.firstName = user.name.split(' ')[0];
      this.url = url;
      this.from = `Feruz Atamuradow <${process.env.EMAIL_FROM}>`;
   }

   newTransport() {
      if (process.env.NODE_ENV === 'production') {
         return nodemailer.createTransport({
         service: 'SendGrid',
         auth: {
            user: process.env.SENDGRID_USERNAME,
            pass: process.env.SENDGRID_PASSWORD
         }
         });
      }

      return nodemailer.createTransport({
         host: process.env.EMAIL_HOST,
         port: process.env.EMAIL_PORT,
         auth: {
         user: process.env.EMAIL_USERNAME,
         pass: process.env.EMAIL_PASSWORD
         },
         tls:{
            rejectUnauthorized:false
         } // and  try this without 

      });
  }

   async send(template, subject) {
      const html = pug.renderFile(`${__dirname}/../views/email/${template}.pug`, {
         firstName: this.firstName,
         url: this.url,
         subject
      });

      const mailOptions = {
         from: this.from,
         to: this.to,
         subject,
         html,
         text: htmlToText.fromString(html)
      }
      
      await this.newTransport().sendMail(mailOptions)

   }
   async sendWelcome() {
      await this.send('welcome', 'Welcome to the Natours Family!');
   }
   async sendPasswordReset() {
      await this.send('passwordReset', 'Your password reset token (valid for only 10 minutes)')
   }
}

但我只犯了这个错误，我不明白这个错误。什么意思?如何解决这个问题？

错误: error: connect 3.209.246.195:2525 at TCPConnectWrap.afterConnect as oncomplete { errno：-4078，代码：'ESOCKET'，syscall：'connect'，地址：'3.209.246.195'，端口: 2525，命令：'CONN‘}

我得到了这个“生产”错误：

错误:错误:消息失败: 550 from地址与验证的发件人身份不匹配。在此错误解决之前，无法发送邮件。访问(C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:784:19) (C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:1674:34) at SMTPConnection._actionSMTPStream (C：\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:1674:34) at SMTPConnection的SMTPConnection._formatError https://sendgrid.com/docs/for-developers/sending-email/sender-identity/查看发件人身份要求。(C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:1152:22) at SMTPConnection._processResponse (C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:947:20) at SMTPConnection._onData (C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:749:14) at TLSSocket(C:\Users\feruz\Desktop\complete\4-natours\node_modules\nodemailer\lib\smtp-connection\index.js:189:44) at TLSSocket.emit (events.js:315:20) at addChunk (_stream_readable.js:309:12) at readableAddChunk (_stream_readable.js:284:9) at TLSSocket.Readable.push (_stream_readable.js:223:10) {代码：'EMESSAGE'，回复：'550该发件人地址与验证的发件人身份不匹配。在此错误解决之前，无法发送邮件。访问https://sendgrid.com/docs/for-developers/sending-email/sender-identity/查看发件人身份要求‘，responseCode: 550，

命令：'DATA‘}

Answer 1

IP，您使用的端口不正确，或者服务不在3.209.246.195端口2525处运行。你应该再检查一遍。

检查连接: ping 3.209.246.195

检查服务(端口)：telnet 3.209.246.195 2525