docker-postfix/sample/docker-compose/docker-compose.yml

version: "3.7"
services:
  smtp-relay:
    build: ../..
    restart: always
    env_file:
      - "./sample.env"
    expose:
      - "587"
Major update, better support for handling TLS connections. This update includes a few features that make it easier to work with relay hosts. The configuration now uses built-in (Alpine) TLS certificates and allows the user to specify how the Postfix should establish a TLS connection. Configure it using `RELAYHOST_TLS_LEVEL`, if needed. Another configuration option was added, `MESSAGE_SIZE_LIMIT`, which enables you to reject messages exceeding certain limits. Especially useful with relay servers, to prevent messages getting stuck in Postfix queue. Use the `INBOUND_DEBUGGING` parameter to enable additional postfix logs for incoming messages when things go south. Use `TZ` parameter to set the timezone of the container (especially useful for logs and dates in the messages). Notice that `ALLOWED_SENDER_DOMAINS` is now a neccessary parameter. Turns out that due to Postfix anti-spam configuration there's no way to start it properly without specifying the domains it will relay email for. This commit also includes a few samples of running the container: - standalone - in [docker-compose](https://docs.docker.com/compose/) Further work: add a working Kubernetes / Helm chart example. 2019-01-02 17:10:17 +08:00			`version: "3.7"`
			`services:`
			`smtp-relay:`
			`build: ../..`
			`restart: always`
			`env_file:`
			`- "./sample.env"`
			`expose:`
			`- "587"`