Send mailgun using nodemailer-mailgun-transport received connect ECONNREFUSED ::1:587

[tungnt2k]

I set up this for my backend service:

import * as MailGun from 'nodemailer-mailgun-transport';
import { createTransport } from 'nodemailer';


MailerModule.forRootAsync({
  inject: [ConfigService],
  useFactory: (configService: ConfigService) => {
    console.log({
      api_key: configService.get<string>('MAILGUN_API_KEY'),
      domain: configService.get<string>('MAILGUN_DOMAIN'),
    });

    return {
      transport: createTransport(
        MailGun({
          auth: {
            api_key: configService.get<string>('MAILGUN_API_KEY'),
            domain: configService.get<string>('MAILGUN_DOMAIN'),
          },
        }),
      ),
      defaults: {
        from: '"Incash Option" <[email protected]>',
      },
      template: {
        dir: join(process.cwd(), 'dist', 'libs', 'mail', 'templates'),
        adapter: new HandlebarsAdapter(),
        options: {
          strict: true,
        },
      },
    };
  },
}),

And I will received the response:

    Error: connect ECONNREFUSED ::1:587

If I just used a simple like this. Everything is ok

    const transporter = createTransport(
      MailGun({
        auth: {
          api_key: configService.get<string>('MAILGUN_API_KEY'),
          domain: configService.get<string>('MAILGUN_DOMAIN'),
        },
      }),
    );

   transporter.sendMail({
      from: '"Incash Option" <[email protected]>',
      to: '[email protected]',
      subject: 'Incash Option',
      text: 'Incash Option',
    })

Please let me know what the right way to use the MailGun service is.
Thanks

[teddyhendryanto]

Hi @tungnt2k
i just got same error with yours and find out the solution.
you just need to add .transporter at the end of createTransport() function.

here's how you fix it.
hope this answer helps you and others that might face same issue like ours.

const transport = MailGun({
  auth: {
    apiKey: this.configService.get('MAILGUN_API_KEY'),
    domain: this.configService.get('MAILGUN_DOMAIN'),
  },
});

return {
  transport: createTransport(transport).transporter,
  defaults: {
    from: '"test" <[email protected]>',
  },
  template: {
    dir: join(process.cwd(), 'dist', 'libs', 'mail', 'templates'),
    adapter: new HandlebarsAdapter(),
    options: {
      strict: true,
    },
  },
};

[tungnt2k]

I appreciate your support. I change how to do that using the SMTP method instead of API Key and Domain. Currently, everything is okay. If I have the chance, I will do that again. I will try to use your suggestion 😎