k8scd/ansible/mailserver/roles/nginx/templates/mail.conf.j2

server {
    listen 80;
    listen [::]:80;
    server_name {{ nginx_server_name }};

    # ACME challenge
    location /.well-known/acme-challenge/ {
        root /var/www/acme;
    }

    # Redirect everything else to HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name {{ nginx_server_name }};

    ssl_certificate {{ nginx_tls_cert }};
    ssl_certificate_key {{ nginx_tls_key }};
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    # SOGo
    location ^~ /SOGo {
        proxy_pass http://{{ nginx_sogo_backend }};
        proxy_redirect http://{{ nginx_sogo_backend }} /;
        proxy_set_header Host $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 https;
        proxy_set_header x-webobjects-server-protocol HTTP/1.0;
        proxy_set_header x-webobjects-remote-host $remote_addr;
        proxy_set_header x-webobjects-server-name $server_name;
        proxy_set_header x-webobjects-server-url $scheme://$host;
        proxy_set_header x-webobjects-server-port $server_port;
        proxy_buffer_size 128k;
        proxy_buffers 64 512k;
        proxy_busy_buffers_size 512k;
        client_max_body_size 100m;
    }

    # SOGo static resources
    location ^~ /SOGo.woa/WebServerResources/ {
        alias /usr/lib/GNUstep/SOGo/WebServerResources/;
    }

    location /SOGo/WebServerResources/ {
        alias /usr/lib/GNUstep/SOGo/WebServerResources/;
    }

    # Microsoft AutoDiscover / ActiveSync
    location ^~ /Microsoft-Server-ActiveSync {
        proxy_pass http://{{ nginx_sogo_backend }}/SOGo/Microsoft-Server-ActiveSync;
        proxy_set_header Host $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 https;
        proxy_connect_timeout 360;
        proxy_send_timeout 360;
        proxy_read_timeout 360;
    }

    # CalDAV/CardDAV well-known
    location /.well-known/caldav {
        return 301 https://$host/SOGo/dav;
    }
    location /.well-known/carddav {
        return 301 https://$host/SOGo/dav;
    }

    # Default: SOGo
    location / {
        return 301 https://$host/SOGo;
    }
}

# Stalwart web admin
server {
    listen 80;
    listen [::]:80;
    server_name {{ nginx_stalwart_server_name }};

    location /.well-known/acme-challenge/ {
        root /var/www/acme;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name {{ nginx_stalwart_server_name }};

    ssl_certificate {{ nginx_tls_cert }};
    ssl_certificate_key {{ nginx_tls_key }};
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    location / {
        proxy_pass https://{{ nginx_stalwart_backend }};
        proxy_set_header Host $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 https;
    }
}