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January 31, 2021 19:15
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Wildduck: dockerized - πŸ¦†+πŸ‹=❀

The default docker-compose file will set up:

Service Why
WildDuck IMAP, POP3
WildDuck Webmail Webmail, creating accounts,
editing account settings
ZoneMTA Outbound smtp
Haraka Inbound smtp
Rspamd Spam filtering
Traefik Reverse proxy with automatic TLS
MongoDB Database used by most services
Redis Key-value store used by most services

For the default docker-compose file to work without any further setup, you need port 80/443 available for Traefik to get certificates. However, the compose file is not set in stone. You can remove Traefik from the equation and use your own reverse proxy (or configure the applications to handle TLS directly), remove certain services, etc.

No STARTTLS support, only SSL/TLS.

Set up Docker

Install Docker:

$ curl -fsSL https://get.docker.com -o get-docker.sh
$ sh get-docker.sh

Install docker-compose

$ sudo curl -L "https://github.com/docker/compose/releases/download/1.28.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
$ sudo chmod +x /usr/local/bin/docker-compose

Deploy Wildduck: dockerized

Create a new directory and run the setup docker image. The image only copies the default config folder, .env, docker-compose.yml, and edits them for your domain. It does not install anything on the host system.

The setup image takes 1-2 arguments. The domain for your email (e.g example.com), and the hostname where your mail server will be (e.g mail.example.com). They can be the same host, if you host your website on the same server for example.

$ mkdir wildduck-dockerized
$ cd wildduck-dockerized
$ docker run --rm -v "${PWD}:/wildduck-dockerized" nodemailer/wildduck-dockerized-setup:1.0.2 domainname [hostname]

Optionally set your contact address in the .env file for lets encrypt expiry notices:

# Used as the lets encrypt contact address for expiry notices: https://letsencrypt.org/docs/expiration-emails/
ACME_EMAIL=john@example.com

Deploy using docker-compose:

$ docker-compose up -d

Custom configuration

Configuration files for all services reside in ./config. Alter them in whichever way you want, and restart the service in question.