使用已知良好的SMTP服务器，nodemailer失败，连接被拒绝

Question

我有一个邮件服务器设置并可以工作（在Linode上使用docker镜像，在Linode上使用dockerized dovecot / postfix）-我可以在我的macbook上从roundcube和邮件客户端发送和接收邮件。

但是使用相同的SMTP服务器和凭据设置nodemailer，我得到：

{ Error: queryA ECONNREFUSED mail.xxxxx.com
    at errnoException (dns.js:50:10)
    at QueryReqWrap.onresolve [as oncomplete] (dns.js:238:19)
  code: 'EDNS',
  errno: 'ECONNREFUSED',
  syscall: 'queryA',
  hostname: 'mail.xxxxx.com',
  command: 'CONN' }

我正在使用来自文档的示例脚本：

"use strict";
const nodemailer = require("nodemailer");

// async..await is not allowed in global scope, must use a wrapper
async function main(){

   // Generate test SMTP service account from ethereal.email
  // Only needed if you don't have a real mail account for testing
  //let account = await nodemailer.createTestAccount();

  // create reusable transporter object using the default SMTP transport
  let transporter = nodemailer.createTransport({
    host: "mail.xxxxx.com",
    port: 465,
    secure: true, // true for 465, false for other ports
    auth: {
      user: "steve@xxxxx.com", 
      pass: "pppppp" 
    }
  });

  // setup email data with unicode symbols
  let mailOptions = {
    from: '"Fred Foo " <foo@example.com>', // sender address
    to: "steve@zzzzz.com", // list of receivers
    subject: "Hello ?", // Subject line
    text: "Hello world?", // plain text body
    html: "<b>Hello world?</b>" // html body
  };

  // send mail with defined transport object
  let info = await transporter.sendMail(mailOptions)

  console.log("Message sent: %s", info.messageId);
  // Preview only available when sending through an Ethereal account
  console.log("Preview URL: %s", nodemailer.getTestMessageUrl(info));

  // Message sent: <b658f8ca-6296-ccf4-8306-87d57a0b4321@example.com>
  // Preview URL: https://ethereal.email/message/WaQKMgKddxQDoou...
}

main().catch(console.error);

我也收到相同的错误，而没有尝试使用以下方式发送电子邮件：

transporter.verify((err, success) => {
    if (err) 
        console.error(err);
    else
        console.log('Your config is correct');
});

Answer 1

有同样的问题。只需使用早期版本5.0.0。

对于安装特定版本，请使用 npm install package@version

在我们的情况下： npm install nodemailer@4.7.0