docker-compose.override.yml

services:
    nginx-mailcow:
      networks:
        t2_proxy:
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.nginx-mailcow.entrypoints=http"
        - "traefik.http.routers.nginx-mailcow.rule=HostRegexp(`{host:(autodiscover|autoconfig|email).+}`)"
        - "traefik.http.middlewares.nginx-mailcow-https-redirect.redirectscheme.scheme=https"
        - "traefik.http.middlewares.sogo-redirect.redirectregex.regex=https://(mail|webmail).***"
        - "traefik.http.middlewares.sogo-redirect.redirectregex.replacement=https://***/SOGo/"
        - "traefik.http.routers.nginx-mailcow.middlewares=nginx-mailcow-https-redirect"
        - "traefik.http.routers.nginx-mailcow-secure.entrypoints=https"
        - "traefik.http.routers.nginx-mailcow-secure.rule=Host(`***`) || Host(`****`)" ###### hier eure FQDN angeben #####
        - "traefik.http.routers.nginx-mailcow-secure.tls=true"
        - "traefik.http.routers.nginx-mailcow-secure.tls.domains[0].main=****" ###### anpassen zu euer FQDN von oben #####
        - "traefik.http.routers.nginx-mailcow-secure.tls.domains[0].sans=imap.***, smtp.***, pop3.***" ## Domain anpassen ##
        - "traefik.http.routers.nginx-mailcow-secure.service=nginx-mailcow"
        - "traefik.http.services.nginx-mailcow.loadbalancer.server.port=8180"
        - "traefik.http.routers.nginx-mailcow-secure.tls.certresolver=dns-cloudflare"

    certdumper:
      image: humenius/traefik-certs-dumper
      container_name: traefik_certdumper
      network_mode: none
      command: --restart-containers mailcowdockerized_postfix-mailcow_1,mailcowdockerized_dovecot-mailcow_1
      volumes:
        # mount the folder which contains Traefik's `acme.json' file
        #   in this case Traefik is started from its own docker-compose in ../traefik
        - /srv/traefik2/acme:/traefik:ro
        - /var/run/docker.sock:/var/run/docker.sock:ro
        # mount mailcow's SSL folder
        - ./data/assets/ssl/:/output/moroku.de/
        #- ./data/assets/ssl/key.pem:/output/moroku.de/cert.pem
      # environment:
      #   #  only change this, if you're using another domain for mailcow's web frontend compared to the standard config
      #   - DOMAIN=${MAILCOW_HOSTNAME}

    ipv6nat-mailcow:
      restart: "no"
      entrypoint: ["echo", "ipv6nat disabled in compose.override.yml"]

networks:
  t2_proxy:
    external:
      name: t2_proxy