Postfix SMTP Relay container

Simple postfix smtp to use as relayhost to gmail, mailgun and more.

Docker run

docker run --rm -d --name postfix \
-e RELAY_USER=postmaster@domain \
-e RELAY_PASS=xxxxxxxxx \
-e RELAY_HOST=smtp.mailgun.org \
-e RELAY_PORT=587 \
eftechcombr/postfix:latest

docker-compose.yaml

version: '3.2'
services:
  relay:
    image: eftechcombr/postfix:latest
    restart: unless-stopped
    volumes: 
     - postfix-volume:/var/spool/postfix
    ports:
     - "30025:25"
    env_file: ./.env
volumes:
  postfix-volume:

testing

echo "Email Test" | mail -s "This is a simple test" contato@example.com

or

sendmail -f sender@example.com recipient@example.com
From: Sender Name <sender@example.com>
Subject: Amazon SES Test                
This message was sent using Amazon SES.                
.

Use https://www.mail-tester.com tool for debug

Enjoy!