/smtp2json

Simple SMTP server, which POSTs every email to an endpoint

Primary LanguageJavaScript

SMTP to JSON Server

This module or docker image will:

  1. Spawn a SMTP Server at port 8080
  2. Parse the emails received there
  3. POST the results to given endpoint

Build docker

Build docker image:

docker build -t carlosbaraza/smtp2json:latest .

Run image

Run image exposing port 8080 as 25 (requires root access) and setting the ENV variable POST_URI to the URI of your service:

sudo docker run -p 25:8080 -e POST_URI='https://yourservice.com/emails' carlosbaraza/smtp2json:latest

Test SMTP server:

  1. Create a mockbin: http://mockbin.org/bin/create
  2. Start the server: sudo docker run -p 25:8080 -e POST_URI='https://mockbin.org/bin/71c8cf5c-f6fb-4f39-a7e8-b50c8fb7410d' carlosbaraza/smtp2json:latest
  3. Use telnet to send a fake email: telnet localhost 25
  4. Paste this fake email:
HELO localhost
MAIL FROM: <foo@foo.com>
RCPT TO: <bar@bar.com>
DATA
Subject: Test subject
To: Carlos
From: Foo

This is the body for the email.

With multiple paragraphs.

.
QUIT

Publish to Docker Cloud

  • Build docker image:
docker build -t carlosbaraza/smtp2json:latest .
  • Publish to docker cloud repository:
docker push carlosbaraza/smtp2json:latest
  • Create docker cloud service:
privileged: true
export port 8080 as 25 (Default SMTP port)
set env variable POST_URI with the URI to the API endpoint
  • Add DNS MX record pointing to Service hostname
SUBDOMAIN.YOURDOMAIN.COM. MX 0 smtp2json-12345678.12345678.svc.dockerapp.io

  • Send test email to test@SUBDOMAIN.YOURDOMAIN.COM

  • Check logs to confirm it worked