mailcow.subdomain.conf.sample

## Version 2025/03/16
# make sure that your mailcow container is named mailcow
# make sure that you are aqquainted with the mailcow documentation (https://docs.mailcow.email/)
# make sure you have read the most important entries in the "Get Started" section, "Post Installation Tasks -> Reverse Proxy -> Overview" and "Post Installation Tasks -> Reverse Proxy -> Nginx" sections
# make sure that your dns is configured as per your domain requirements and the mailcow documentation
# make sure to set up a mechanism to copy your SSL certificate after each renewal to /data/assets/ssl/ directory for mailcow to use (see mailcow documentation in "Post Installation Tasks -> Reverse Proxy -> Overview")

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

    server_name mailcow.* autoconfig.* autodiscover.*; # modify these names to match your domain/mailcow configuration

    include /config/nginx/ssl.conf;

    client_max_body_size 0;

    # enable for ldap auth (requires ldap-location.conf in the location block)
    #include /config/nginx/ldap-server.conf;

    # enable for Authelia (requires authelia-location.conf in the location block)
    #include /config/nginx/authelia-server.conf;

    # enable for Authentik (requires authentik-location.conf in the location block)
    #include /config/nginx/authentik-server.conf;

    location / {
        # enable the next two lines for http auth
        #auth_basic "Restricted";
        #auth_basic_user_file /config/nginx/.htpasswd;

        # enable for ldap auth (requires ldap-server.conf in the server block)
        #include /config/nginx/ldap-location.conf;

        # enable for Authelia (requires authelia-server.conf in the server block)
        #include /config/nginx/authelia-location.conf;

        # enable for Authentik (requires authentik-server.conf in the server block)
        #include /config/nginx/authentik-location.conf;

        include /config/nginx/resolver.conf;
        set $upstream_app mailcow;
        set $upstream_port 8080;
        set $upstream_proto http;
        proxy_pass $upstream_proto://$upstream_app:$upstream_port;

        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;
        proxy_buffer_size 128k;
        proxy_buffers 64 512k;
        proxy_busy_buffers_size 512k;
    }

    location /Microsoft-Server-ActiveSync {
        include /config/nginx/resolver.conf;
        set $upstream_app mailcow;
        set $upstream_port 8080;
        set $upstream_proto http;
        proxy_pass $upstream_proto://$upstream_app:$upstream_port;

        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;
        proxy_connect_timeout 75;
        proxy_send_timeout 3650;
        proxy_read_timeout 3650;
        proxy_buffers 64 512k;

        client_body_buffer_size 512k;
    }
}