postfix

Postfix Docker Image

Docker container for Postfix SMTP relay server.

Usage

docker run -d \
  -p 25:25 \
  timjdfletcher/postfix

Configuration

Mount custom Postfix configuration files:

docker run -d \
  -p 25:25 \
  -v /path/to/main.cf:/etc/postfix/main.cf:ro \
  -v /path/to/master.cf:/etc/postfix/master.cf:ro \
  timjdfletcher/postfix

Common Relay Configuration

Example main.cf for a simple relay:

myhostname = mail.example.com
mydomain = example.com
myorigin = $mydomain
inet_interfaces = all
mydestination =
relayhost = [smtp.upstream.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_tls_security_level = encrypt

Ports

Port	Protocol	Purpose
25	TCP	SMTP

Build

./run build

Test

./run test

Runs rspec tests (requires Ruby and Bundler).