Poste.io and Traefik

docker-compose.yml

services:

  traefik:
    image: "traefik:v2.4"
    restart: unless-stopped
    container_name: "traefik"
    networks:
      default:
        ipv4_address: 172.20.0.97
        ipv6_address: fc00:dead:beef::97
      zabbix_frontend:
      zabbix_backend:
    ports:
      - "80:80"
      - "443:443"
      - "8080:8080"
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.http-catchall.rule=hostregexp(`{host:[a-z-.]+}`)"
      - "traefik.http.routers.http-catchall.entrypoints=web"
      - "traefik.http.routers.http-catchall.middlewares=redirect-to-https"
      - "traefik.http.middlewares.redirect-to-https.redirectscheme.scheme=https"
    volumes:
      - "/data/traefik/traefik.yml:/etc/traefik/traefik.yml:ro"
      - "/data/traefik/letsencrypt:/letsencrypt"
      - "/var/run/docker.sock:/var/run/docker.sock:ro"

  mailserver:
    image: poste.io/mailserver:development
    container_name: mailserver
    restart: unless-stopped
    hostname: mail.poste.io
    networks:
      default:
        ipv4_address: 172.20.0.98
        ipv6_address: fc00:dead:beef::98
      zabbix:
    ports:
      - "25:25"
      - "110:110"
      - "143:143"
      - "465:465"
      - "587:587"
      - "993:993"
      - "995:995"
      - "4190:4190"
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.mailserver.rule=Host(`mail.poste.io`)"
      - "traefik.http.routers.mailserver.tls.certresolver=le"
      - "traefik.http.routers.mailserver.entrypoints=websecure"
      - "traefik.http.routers.mailserver.middlewares=redirect-to-https"
      - "traefik.http.services.mailserver.loadbalancer.server.port=80"
    environment:
      - HTTPS=OFF
      - TZ=Europe/Prague
    volumes:
      - /data/mailserver:/data

traefik.yml

entrypoints:
  web:
    address: ":80"
  websecure:
    address: ":443"

api:
  dashboard: true
  insecure: true

providers:
  docker:
    exposedByDefault: false
  file:
    directory: "/etc/traefik/config"

certificatesResolvers:
  le:
    acme:
      email: info@analogic.cz
      storage: /letsencrypt/acme.json
      tlsChallenge: true

log:
  level: DEBUG