This is a dockerized full-stack e-mail server. It is primarily based on openSUSE Leap (except MariaDB and Redis) and relies on openSUSE packages. It is prepared to be run as a Docker Compose project and uses a ready-to-use configuration which I built according to my preferences. Nevertheless, please feel free to suggest improvements or to change whatever you like in your personal setup.

• Postfix
  • MariaDB backend
  • SMTP/Submission (incl. TLS support)
  • Postscreen
• Dovecot
  • MariaDB backend
  • IMAP (incl. TLS support)
  • LMTP
  • Quota
  • Sieve
• Rspamd
  • Redis backend
  • ClamAV
  • DKIM
  • ARC
  • Greylisting
• Postfix Admin
  • MariaDB backend
• Roundcube Webmail
  • MariaDB backend
• Let's Encrypt
• HAProxy
  • SSL termination
• Graylog
  • MongoDB
  • Elasticsearch

tbd.

• Clone this project to a directory with a desired project name:

git clone https://github.com/cupracer/mailserver.git /opt/docker/compose/mail 

• Prepare config files:

cd /opt/docker/compose/mail cp docker-compose.yml.dist docker-compose.yml cp env.dist .env 

• Edit variables in .env (it's strongly advised to change all passwords!). Following are the defaults:

# Fully qualified domain name (FQDN) of the mail server instance MYHOSTNAME=mail.example.de # MySQ root password for shared Dovecot/Postfix/PostfixAdmin database MYSQL_ROOT_PASSWORD=secret # MySQ app password used by Dovecot/Postfix/PostfixAdmin MYSQL_PASSWORD=secret # MySQ root password for Roundcube database ROUNDCUBE_MYSQL_ROOT_PASSWORD=secret # MySQ app password used by Roundcube ROUNDCUBE_MYSQL_PASSWORD=secret # PostfixAdmin setup password to create admin users POSTFIXADMIN_SETUP_PASSWORD=secret # Password to access Rspamd web GUI RSPAMD_WEB_PASSWORD=secret # Use DKIM feature in Rspamd RSPAMD_USE_DKIM=false # Use ARC feature in Rspamd (requires RSPAMD_USE_DKIM) RSPAMD_USE_ARC=false # Rspamd and PostfixAdmin are secured by HTTP basic auth (user "admin") WEB_PASSWORD=secret 

• Star the project for the first time:

docker-compose up -d 

• Create an SSL certificate with Let's Encrypt:

docker-compose exec letsencrypt bash -c 'certbot certonly --standalone -d $MYHOSTNAME --deploy-hook /usr/local/sbin/restart-containers.py' 

Please continue only if this was successful!

• Setup PostfixAdmin

  • Visit: https://MYHOSTNAME/postfixadmin/setup.php (to create db and admin user)
  • Create an admin user i.e. "admin@MYHOSTNAME"
  • Login as admin user: https://MYHOSTNAME/postfixadmin/
  • Create a new Domain for the FQDN of your mail server:

Domain: MYHOSTNAME Description: default Aliases: 0 Mailboxes: 0 Mailbox quota: 0 Domain quota: 0 is Backup MX: no active: yes add default aliases: yes 

• Create additional domains as desired
• Add a first mailbox for the admin user:

User: USERNAME Domain: MYHOSTNAME ... 

• Add an alias for the default domain (FQDN of your mail server):

Alias: admin Domain: MYHOSTNAME To: name of the first mailbox 

• Change aliases of default domain:

abuse, hostmaster, postmaster, webmaster --> admin@MYHOSTNAME 

• Visit https://MYHOSTNAME/roundcubemail/ and login with you mailbox credentials.

• Visit https://MYHOSTNAME/rspamd/ to monitor Rspamd's activities.

• If you decided to use DKIM, please run the following command to get you DKIM public key:

docker-compose exec rspamd bash -c 'info.sh' 

Have fun!