image-smtp

Setup Postfix SMTP relay using Docker

What for?

Able to sending email without using an external SMTP server

How to use this image

Build the image

git clone https://github.com/kadasz/image-smtp
cd image-smtp
docker build -t image-smtp .

Run a container

The env variables should to be passed during starts container:

• DOMAIN the domain name your server is using
• HOSTNAME should be set to the FQDN of your mail server
• NETWORKS option means that relay mail from these IP without authentication

 docker run -d --name mail --hostname mail -p 25:25 -e DOMAIN="domain.com" -e HOSTNAME="mail.domain.com" -e NETWORKS="127.0.0.0/8 192.168.10.0/24" image-smtp

The mail container will be started with exposed the 25 port to the docker host server.