A simple mail relay configuration.

Environement Variables :

• mxbck_myhostname : name (fqdn) of you machine
• mxbck_relay_domains : name of the DOMAIN to be relayed
• mxbck_cert : method to get TLS certificates (certbot)
• mxbck_certbot_mail : mail address (used by certbot for communication)

A Volume is required, used to store certbot certificates. To be mounted in /config

Example: docker run -p 25:25 -p 80:80 --name mx-backup -d --volume /app/mx-backup/config:/config \
-e mxbck_myhostname=machine.local.domain \
-e mxbck_relay_domains=local.domain \
-e mxbck_cert=certbot \
-e mxbck_certbot_mail=admin@where.ever \
ofthesun9/mx-backup