get rid of simple-mail-relay, as it stopped working and seems to be a…

…bandoned

README.md

@@ -21,8 +21,6 @@ What you'll have when you are done:
 | https://​traefik.yourdomain.com | [Traefik](https://github.com/containous/traefik/) | The automatic reverse proxy, including its admin UI. [Lets Encrypt](https://letsencrypt.org/) will automatically create SSL certificates for you
 | https://​swarmpit.yourdomain.com | [Swarmpit](https://github.com/swarmpit/swarmpit) | Manage your swarm and monitor resources (using influxdb)
 | https://​keycloak.yourdomain.com | [Keycloak](https://github.com/keycloak/keycloak) | SSO server
-| https://​mail.yourdomain.com:25 | [Postfix](https://github.com/knipknap/docker-simple-mail-forwarder) | An SMTP server to forward emails to you
-| https://&#8203;mail.yourdomain.com:487 | [Postfix](https://github.com/knipknap/docker-simple-mail-forwarder) (TLS) | An SMTPS server to forward emails to you.<br/>$\textcolor{red}{\text{This service doesn't work!}}$<br/>While I managed to make this accept TLS connections, it doesn't fully work; I suspect a problem related to TLS options such as renegotiation. If you figure this out, please let me know.
 | https://&#8203;gateone.yourdomain.com | [GateOne](https://github.com/liftoff/GateOne) | An HTTPS based SSH client
 | https://&#8203;droppy.yourdomain.com | [Droppy](https://github.com/silverwind/droppy) | File storage server with a web interface
 | https://&#8203;web.yourdomain.com | [nginx](https://www.nginx.com/) | Webserver to serve public files uploaded using Droppy

docker-compose.yml

@@ -149,40 +149,6 @@ services:
         - traefik.http.services.gateone.loadbalancer.server.port=8000
         - traefik.http.services.gateone.loadbalancer.server.scheme=https
 
-  mail_relay:
-    image: zixia/simple-mail-forwarder:1.4
-    networks:
-      - traefik-public
-      # Putting this on network default because I couldn't get TLS to work through traefik
-      - default
-    volumes:
-      - mail-relay:/var/db/dkim/
-    deploy:
-      placement:
-        constraints:
-          - node.role == manager
-      labels:
-        - traefik.enable=true
-        - traefik.docker.network=traefik-public
-        - traefik.constraint-label=traefik-public
-        # SMTP unencrypted
-        - traefik.tcp.routers.mail_relay.rule=HostSNI(`*`)
-        - traefik.tcp.routers.mail_relay.entrypoints=smtp
-        - traefik.tcp.routers.mail_relay.service=mail_relay
-        - traefik.tcp.services.mail_relay.loadbalancer.server.port=25
-        # SMTP-TLS
-        - traefik.tcp.routers.mail_relay_tls.tls=true
-        - traefik.tcp.routers.mail_relay_tls.tls.certresolver=le
-        - traefik.tcp.routers.mail_relay_tls.rule=HostSNI(`mail.${DOMAIN?Variable not set}`)
-        - traefik.tcp.routers.mail_relay_tls.entrypoints=smtptls
-        - traefik.tcp.routers.mail_relay_tls.service=mail_relay
-        - traefik.tcp.services.mail_relay_tls.loadbalancer.server.port=25
-    environment:
-      - SMF_CONFIG=${SMF_CONFIG?Variable not set}
-      - SMF_DOMAIN=${DOMAIN?Variable not set}
-      - SMF_POSTFIXMAIN_myhostname=mail.${DOMAIN?Variable not set}
-      - SMF_POSTFIXMAIN_smtpd_recipient_restrictions=permit_sasl_authenticated,reject
-
   swarmpit:
     image: swarmpit/swarmpit:latest
     environment:
@@ -397,8 +363,6 @@ volumes:
   db-data:
     driver: local
 
-  mail-relay:
-
   influx-data:
     driver: local