mailship

Mailship is a single Docker container e-mail solution. Mailship can be used as simple standalone server or just as a solution for pulling e-mails to the big webmail providers. Configuration is done by postfixadmin, a simple web UI to configure domains and mailboxes. The data is stored in sqlite and for the mail serving postfix and dovecot is used.

Usecase

• Hosting your own webpage and info@your-domain.com style e-mail adresses.
• Have this server behind a reverse proxy that handles all the SSL stuff.
• No webmailer, antivirus or spam protection is included.
• Having multiple services in one container is an antipattern and I know that. Just interpret "mail" as one service ;-)

Getting set up

docker-compose.yml

Use this docker compose file as an example how to set up mailship in your environment.

version: "3"

services:
  mailship:
    build: .
    image: behringer24/mailship
    environment: 
      POSTFIXADMIN_SETUP_PASSWORD: 
    volumes:
      - mail_dir:/var/vmail
      - spool_mail:/var/spool/mail
      - spool_postfix:/var/spool/postfix
      - sqlite:/etc/postfix/sqlite
    ports:
      - "80:80"
      - "25:25"
      - "110:110"
      - "143:143"
      - "465:465"
      - "587:587"
      - "993:993"
      - "995:995"
      - "4190:4190"
      - "11334:11334"
    restart: always
    container_name: mailship

volumes:
  mail_dir:
  spool_mail:
  spool_postfix:
  sqlite:

If you want to run the port 80 behind a reverse proxy, then expose port 80 instead of the configuration

[...]
    expose:
      - 80
    ports:
      - "25:25"
      - "110:110"
      - "143:143"
      - "465:465"
      - "587:587"
      - "993:993"
      - "995:995"
      - "4190:4190"
      - "11334:11334"
[...]

The volumes are importand to persist the emails and configuration.

When the server is running the container go to your /setup.php (port 80 of the container) and set a setup password. Postfixadmin tells you to put the generated hash into the config.php file. Please copy that hash into your docker-compose.yml behind POSTFIXADMIN_SETUP_PASSWORD:

[...]
services:
  mailship:
    build: .
    image: behringer24/mailship
    environment: 
      POSTFIXADMIN_SETUP_PASSWORD: <yourhashhere>
    volumes:
      - mail_dir:/var/vmail
      - spool_mail:/var/spool/mail
      - spool_postfix:/var/spool/postfix
      - sqlite:/etc/postfix/sqlite
[...]

IMPORTANT: Postfixadmin since version 3 generates Hashes with '$'. You have to make them double $ so it works in the docker-compose.yml! Every $ in the hash must be changed to $$. Otherwise you get an error when you do docker-compose up -d

Now go to your /setup.php again and set up an admin account. after that you can go to /login.php and start configuring your server.