ansible/roles/docker/templates/compose-files/postfix.yml.j2

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# vim: ft=yaml.docker-compose
version: "3.8"
services:
app:
image: boky/postfix:{{ services.postfix.version }}
restart: always
networks:
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postfix:
aliases:
- postfix
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volumes:
- "./dkim:/etc/opendkim/keys"
environment:
# Get all services which have allowed_sender_domain defined
ALLOWED_SENDER_DOMAINS: "data.coop {{ services | dict2items | selectattr('value.allowed_sender_domain', 'true') | map(attribute='value.domain') | join(' ') }}"
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HOSTNAME: "{{ services.postfix.domain }}" # the name the smtp server will identify itself as
DKIM_AUTOGENERATE: true
networks:
postfix:
external: true