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Mailu/docs/reverse.rst
Florent Daigniere 614042344d document
2024-04-08 09:46:39 +02:00

114 lines
4.4 KiB
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Using an external reverse proxy
===============================
One of Mailu's use cases is as part of a larger services platform, where maybe
other Web services are available on other FQDNs served from the same IP address.
In such a configuration, one would usually run a front-end reverse proxy to serve all
Web contents based on criteria like the requested hostname (virtual hosts).
.. _traefik_proxy:
Traefik as reverse proxy
------------------------
In your docker-compose.yml, remove the `ports` section of the `front` container
and add a section like follows:
.. code-block:: yaml
reverse-proxy:
# The official v2 Traefik docker image
image: traefik:v2.11
# Enables the web UI and tells Traefik to listen to docker
command:
- "--providers.docker=true"
- "--providers.docker.exposedbydefault=false"
- "--providers.docker.allowEmptyServices=true"
- "--entrypoints.web.address=:http"
- "--entrypoints.websecure.address=:https"
- "--entrypoints.smtp.address=:smtp"
- "--entrypoints.submissions.address=:submissions"
- "--entrypoints.imaps.address=:imaps"
- "--entrypoints.pop3s.address=:pop3s"
- "--entrypoints.sieve.address=:sieve"
# - "--api.insecure=true"
# - "--log.level=DEBUG"
ports:
- "25:25"
- "80:80"
- "443:443"
- "465:465"
- "993:993"
- "995:995"
- "4190:4190"
# The Web UI (enabled by --api.insecure=true)
# - "8080:8080"
volumes:
# So that Traefik can listen to the Docker events
- /var/run/docker.sock:/var/run/docker.sock
and then add the following to the front section:
.. code-block:: yaml
labels:
- "traefik.enable=true"
# the second part is important to ensure Mailu can get certificates from letsencrypt for all hostnames
- "traefik.http.routers.web.rule=Host(`mail.example.com`) || PathPrefix(`/.well-known/acme-challenge/`)"
- "traefik.http.routers.web.entrypoints=web"
- "traefik.http.services.web.loadbalancer.server.port=80"
# other FQDNS can be added here:
- "traefik.tcp.routers.websecure.rule=HostSNI(`mail.example.com`) || HostSNI(`autoconfig.example.com`) || HostSNI(`mta-sts.example.com`)"
- "traefik.tcp.routers.websecure.entrypoints=websecure"
- "traefik.tcp.routers.websecure.tls.passthrough=true"
- "traefik.tcp.routers.websecure.service=websecure"
- "traefik.tcp.services.websecure.loadbalancer.server.port=443"
- "traefik.tcp.services.websecure.loadbalancer.proxyProtocol.version=2"
- "traefik.tcp.routers.smtp.rule=HostSNI(`*`)"
- "traefik.tcp.routers.smtp.entrypoints=smtp"
- "traefik.tcp.routers.smtp.service=smtp"
- "traefik.tcp.services.smtp.loadbalancer.server.port=25"
- "traefik.tcp.services.smtp.loadbalancer.proxyProtocol.version=2"
- "traefik.tcp.routers.submissions.rule=HostSNI(`*`)"
- "traefik.tcp.routers.submissions.entrypoints=submissions"
- "traefik.tcp.routers.submissions.service=submissions"
- "traefik.tcp.services.submissions.loadbalancer.server.port=465"
- "traefik.tcp.services.submissions.loadbalancer.proxyProtocol.version=2"
- "traefik.tcp.routers.imaps.rule=HostSNI(`*`)"
- "traefik.tcp.routers.imaps.entrypoints=imaps"
- "traefik.tcp.routers.imaps.service=imaps"
- "traefik.tcp.services.imaps.loadbalancer.server.port=993"
- "traefik.tcp.services.imaps.loadbalancer.proxyProtocol.version=2"
- "traefik.tcp.routers.pop3s.rule=HostSNI(`*`)"
- "traefik.tcp.routers.pop3s.entrypoints=pop3s"
- "traefik.tcp.routers.pop3s.service=pop3s"
- "traefik.tcp.services.pop3s.loadbalancer.server.port=995"
- "traefik.tcp.services.pop3s.loadbalancer.proxyProtocol.version=2"
- "traefik.tcp.routers.sieve.rule=HostSNI(`*`)"
- "traefik.tcp.routers.sieve.entrypoints=sieve"
- "traefik.tcp.routers.sieve.service=sieve"
- "traefik.tcp.services.sieve.loadbalancer.server.port=4190"
- "traefik.tcp.services.sieve.loadbalancer.proxyProtocol.version=2"
healthcheck:
test: ['NONE']
in mailu.env:
.. code-block:: docker
REAL_IP_FROM=192.168.203.0/24
PROXY_PROTOCOL=25,443,465,993,995,4190
TRAEFIK_VERSION=v2
TLS_FLAVOR=letsencrypt
WEBROOT_REDIRECT=/sso/login
Using the above configuration, Traefik will proxy all the traffic related to Mailu's FQDNs without requiring duplicate certificates.