（ドラフト/メモ）Dockerコンテナベースで動作するメールサーバ

１．Mailu
https://github.com/Mailu/Mailu

・Mailuで簡単にWebUI付きのメールサーバを立てる
https://qiita.com/kter/items/7cad987794b6610e4983

２．mailcow
https://mailcow.email/

３．tomav/docker-mailserver
https://github.com/tomav/docker-mailserver

    Postfix with smtp or ldap auth
    Dovecot for sasl, imap (and optional pop3) with ssl support, with ldap auth
        Dovecot is installed from the Dovecot Community Repo
    saslauthd with ldap auth
    Amavis
    Spamassasin supporting custom rules
    ClamAV with automatic updates
    OpenDKIM
    OpenDMARC
    Fail2ban
    Fetchmail
    Postscreen
    Postgrey
    basic Sieve support using dovecot
    LetsEncrypt and self-signed certificates
    Setup script to easily configure and maintain your mailserver
    persistent data and state (but think about backups!)
    Integration tests
    Automated builds on docker hub
    Plus addressing (a.k.a. extension delimiters) works out of the box: email for [e-mail] go to [e-mail]

Why I created this image: Simple mail server with Docker

Before you open an issue, please have a look this README, the Wiki and Postfix/Dovecot documentation.
Requirements

Recommended:

    1 CPU
    1-2GB RAM
    Swap enabled for the container

Minimum:

    1 CPU
    512MB RAM

Note: You'll need to deactivate some services like ClamAV to be able to run on a host with 512MB of RAM. Even with 1G RAM you may run into problems without swap, see FAQ.

・Dockerでメールサーバーを建てたときのメモ
https://blog.netaka.net/mailserver_on_docker/