Mailcow reverse proxy

000-default.conf

# General ssl config
ssl_session_cache shared:SSL:5m;
ssl_session_timeout 4h;
ssl_session_tickets off;

ssl_dhparam /etc/nginx/dhparam.pem;
ssl_buffer_size 4k;
ssl_ecdh_curve prime256v1:secp384r1;

server {
  listen 80 default_server;
  listen [::]:80 default_server;
  server_name _;
}

001-mailcow.conf

server {
  listen 80;
  listen [::]:80;
  server_name maindomain.com;
  return 301 https://$host$request_uri;
}
server {
  listen 80;
  listen [::]:80;
  server_name autoconfig.maindomain.com;
  rewrite ^/(.*)$ /autoconfig.php last;
  location / {
    proxy_pass http://nginx-mailcow:8080/;
    proxy_set_header Host $http_host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto $scheme;
    client_max_body_size 0;
  }
}
server {
  listen 443 ssl;
  server_name maindomain.com mail.maindomain.com www.maindomain.com autoconfig.maindomain.com autodicover.maindomain.com;

  ssl_certificate /etc/ssl/maindomain-fullchain.pem;
  ssl_certificate_key /etc/ssl/maindomain-privkey.pem;
  ssl_prefer_server_ciphers on;
  ssl_protocols TLSv1.2 TLSv1.3;
  ssl_ciphers HIGH:!aNULL:!MD5;

  location / {
      proxy_pass http://nginx-mailcow:8080/;
      proxy_set_header Host $http_host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Proto $scheme;
      client_max_body_size 0;
  }
}

002-wordpress.conf

server {
    listen 80;
    listen [::]:80;
    server_name mywordpress.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;

    server_name mywordpress.com www.mywordpress.com;

    gzip off;
      
    ssl_certificate /etc/ssl/wordpress-fullchain.pem;
    ssl_certificate_key /etc/ssl/wordpress-privkey.pem;
      
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;

    ssl_ciphers TLS13-CHACHA20-POLY1305-SHA256:TLS13-AES-256-GCM-SHA384:TLS13-AES-128-GCM-SHA256:ECDH+AESGCM:ECDH+CHACHA20:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS;
    ssl_dhparam /etc/nginx/dhparam.pem;

    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/ssl/chain-wordpress.pem;

    resolver 8.8.8.8 8.8.4.4 valid=300s ipv6=off;
    resolver_timeout 15s;

    add_header Strict-Transport-Security "max-age=15768000; includeSubdomains;" always;
    add_header X-Content-Type-Options nosniff;
    add_header X-XSS-Protection "1; mode=block";
    add_header X-Robots-Tag none;
    add_header X-Download-Options noopen;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Permitted-Cross-Domain-Policies none;
    add_header Referrer-Policy strict-origin;

    location / {
        proxy_pass http://wordpress1/;
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        client_max_body_size 0;
    }
}

docker-compose.override.yml

version: '2.1'
services:

    nginx-proxy:
      image: nginx:alpine
      depends_on:
        - wordpress1
        - nginx-mailcow
      ports:
        - "80:80"
        - "443:443"
      volumes:
        - ${CST_NGINX_CONF_DIR}:/etc/nginx/conf.d
        - ${CST_MYVERSION_SSL_CERTS}:/etc/ssl:ro
        - ${CST_MYVERSION_DHPARAMS}/dhparams2048.pem:/etc/nginx/dhparam.pem:ro
      restart: always
      dns:
        - ${IPV4_NETWORK:-172.22.1}.254
      networks:
        mailcow-network:
          ipv4_address: ${IPV4_NETWORK:-172.22.1}.10
          ipv6_address: fd4d:6169:6c63:6f77::100:10
          aliases:
            - proxy
        wp1-network:
          ipv4_address: ${CST_IPV4:-10.0.0}.10
          ipv6_address: fd11:a:b:c::100:10
          aliases:
            - proxy

    mysqlwp1:
      image: mariadb:latest
      volumes:
        - ${CST_DBDATA_DIR}:/var/lib/mysql/
      environment:
        - MYSQL_ROOT_PASSWORD=${CST_DBROOT_PASSWORD}
        - MYSQL_DATABASE=${CST_DBNAME}
        - MYSQL_USER=${CST_DBUSER}
        - MYSQL_PASSWORD=${CST_DBUSER_PASSWORD}
      restart: always
      networks:
        wp1-network:
          aliases:
            - mysqlwp1

    wordpress1:
      image: wordpress:latest
      depends_on:
        - mysqlwp1
      volumes:
        - ${CST_DATA_DIR}:/var/www/html
        - ${CST_MYVERSION_CONF}/uploads.ini:/usr/local/etc/php/conf.d/uploads.ini
      environment:
        - WORDPRESS_DB_HOST=mysqlwp1:3306
        - WORDPRESS_DB_NAME=${CST_DBNAME}
        - WORDPRESS_DB_USER=${CST_DBUSER}
        - WORDPRESS_DB_PASSWORD=${CST_DBUSER_PASSWORD}
        - VIRTUAL_HOST=${CST_DOMAIN}
      restart: always
      networks:
        wp1-network:
          aliases:
            - wordpress1

networks:
  wp1-network:
    driver: bridge
    driver_opts:
      com.docker.network.bridge.name: bridge1
    enable_ipv6: true
    ipam:
      driver: default
      config:
        - subnet: ${CST_IPV4:-10.0.0}.0/24
        - subnet: ${CST_IPV6:-fd11:a:b:c::/64}