Postfix mail server

Each VM installed via Ansible is able to send emails from the domain.

Postfix mail relay

A mail relay based on Postfix is defined on the host postfix-host, via the playbook playbooks/postfix/postfix-relay-playbook.yml, based on the Postfix DebOps role.

It is configured as an open relay using smtps. The relaying restrictions are set in firewall using OpenStack.

Postfix mail satellite

A Postfix satellite is defined on each host (except for postfix-host), via the playbook playbooks/postfix/postfix-client-playbook.yml, based on the Postfix DebOps role.