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286 lines
7.9 KiB
Nginx Configuration File
286 lines
7.9 KiB
Nginx Configuration File
# Basic configuration
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user nginx;
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worker_processes auto;
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error_log /dev/stderr info;
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pid /var/run/nginx.pid;
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load_module "modules/ngx_mail_module.so";
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events {
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worker_connections 1024;
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}
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http {
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# Standard HTTP configuration with slight hardening
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include /etc/nginx/mime.types;
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default_type application/octet-stream;
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access_log /dev/stdout;
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sendfile on;
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keepalive_timeout 65;
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server_tokens off;
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absolute_redirect off;
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resolver {{ RESOLVER }} valid=30s;
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{% if REAL_IP_HEADER %}
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real_ip_header {{ REAL_IP_HEADER }};
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{% endif %}
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{% if REAL_IP_FROM %}{% for from_ip in REAL_IP_FROM.split(',') %}
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set_real_ip_from {{ from_ip }};
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{% endfor %}{% endif %}
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# Header maps
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map $http_x_forwarded_proto $proxy_x_forwarded_proto {
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default $http_x_forwarded_proto;
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'' $scheme;
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}
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# Main HTTP server
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server {
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# Favicon stuff
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root /static;
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# Variables for proxifying
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set $admin {{ ADMIN_ADDRESS }};
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set $antispam {{ ANTISPAM_WEBUI_ADDRESS }};
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{% if WEBMAIL_ADDRESS %}
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set $webmail {{ WEBMAIL_ADDRESS }};
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{% endif %}
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{% if WEBDAV_ADDRESS %}
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set $webdav {{ WEBDAV_ADDRESS }};
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{% endif %}
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# Always listen over HTTP
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listen 80;
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listen [::]:80;
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# Only enable HTTPS if TLS is enabled with no error and not on kubernetes
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{% if KUBERNETES_INGRESS != 'true' and TLS and not TLS_ERROR %}
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listen 443 ssl http2;
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listen [::]:443 ssl http2;
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include /etc/nginx/tls.conf;
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ssl_session_cache shared:SSLHTTP:50m;
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add_header Strict-Transport-Security 'max-age=31536000';
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{% if not TLS_FLAVOR in [ 'mail', 'mail-letsencrypt' ] %}
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if ($proxy_x_forwarded_proto = http) {
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return 301 https://$host$request_uri;
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}
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{% endif %}
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{% endif %}
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# Remove headers to prevent duplication and information disclosure
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proxy_hide_header X-XSS-Protection;
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proxy_hide_header X-Powered-By;
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add_header X-Frame-Options 'SAMEORIGIN';
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add_header X-Content-Type-Options 'nosniff';
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add_header X-Permitted-Cross-Domain-Policies 'none';
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add_header X-XSS-Protection '1; mode=block';
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add_header Referrer-Policy 'same-origin';
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# In any case, enable the proxy for certbot if the flavor is letsencrypt and not on kubernetes
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{% if KUBERNETES_INGRESS != 'true' and TLS_FLAVOR in [ 'letsencrypt', 'mail-letsencrypt' ] %}
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location ^~ /.well-known/acme-challenge/ {
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proxy_pass http://127.0.0.1:8008;
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}
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{% endif %}
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# If TLS is failing, prevent access to anything except certbot
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{% if KUBERNETES_INGRESS != 'true' and TLS_ERROR and not TLS_FLAVOR == "mail" %}
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location / {
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return 403;
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}
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{% else %}
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include /overrides/*.conf;
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# Actual logic
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{% if WEB_WEBMAIL != '/' %}
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location / {
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{% if WEBROOT_REDIRECT %}
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try_files $uri {{ WEBROOT_REDIRECT }};
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{% else %}
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try_files $uri =404;
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{% endif %}
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}
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{% endif %}
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{% if WEBMAIL != 'none' %}
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location {{ WEB_WEBMAIL }} {
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{% if WEB_WEBMAIL != '/' %}
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rewrite ^({{ WEB_WEBMAIL }})$ $1/ permanent;
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rewrite ^{{ WEB_WEBMAIL }}/(.*) /$1 break;
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{% endif %}
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include /etc/nginx/proxy.conf;
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client_max_body_size {{ MESSAGE_SIZE_LIMIT|int + 8388608 }};
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proxy_pass http://$webmail;
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}
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{% endif %}
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{% if ADMIN == 'true' %}
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location {{ WEB_ADMIN }} {
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return 301 {{ WEB_ADMIN }}/ui;
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}
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location ~ {{ WEB_ADMIN }}/(ui|static) {
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rewrite ^{{ WEB_ADMIN }}/(.*) /$1 break;
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include /etc/nginx/proxy.conf;
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proxy_set_header X-Forwarded-Prefix {{ WEB_ADMIN }};
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proxy_pass http://$admin;
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}
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location {{ WEB_ADMIN }}/antispam {
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rewrite ^{{ WEB_ADMIN }}/antispam/(.*) /$1 break;
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auth_request /internal/auth/admin;
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proxy_set_header X-Real-IP "";
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proxy_set_header X-Forwarded-For "";
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proxy_pass http://$antispam;
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}
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{% endif %}
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{% if WEBDAV != 'none' %}
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location /webdav {
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rewrite ^/webdav/(.*) /$1 break;
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auth_request /internal/auth/basic;
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auth_request_set $user $upstream_http_x_user;
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include /etc/nginx/proxy.conf;
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proxy_set_header X-Remote-User $user;
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proxy_set_header X-Script-Name /webdav;
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proxy_pass http://$webdav;
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}
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location ~ ^/.well-known/(carddav|caldav) {
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return 301 /webdav/;
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}
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{% endif %}
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{% endif %}
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location /internal {
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internal;
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proxy_set_header Authorization $http_authorization;
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proxy_pass_header Authorization;
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proxy_pass http://$admin;
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proxy_pass_request_body off;
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proxy_set_header Content-Length "";
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}
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location /health {
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return 204;
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}
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}
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# Forwarding authentication server
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server {
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# Variables for proxifying
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set $admin {{ ADMIN_ADDRESS }};
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listen 127.0.0.1:8000;
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location / {
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proxy_pass http://$admin/internal$request_uri;
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}
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}
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}
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mail {
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server_name {{ HOSTNAMES.split(",")[0] }};
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auth_http http://127.0.0.1:8000/auth/email;
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proxy_pass_error_message on;
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resolver {{ RESOLVER }} valid=30s;
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{% if TLS and not TLS_ERROR %}
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include /etc/nginx/tls.conf;
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ssl_session_cache shared:SSLMAIL:50m;
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{% endif %}
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# Advertise real capabilites of backends (postfix/dovecot)
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smtp_capabilities PIPELINING SIZE {{ MESSAGE_SIZE_LIMIT }} ETRN ENHANCEDSTATUSCODES 8BITMIME DSN CHUNKING;
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pop3_capabilities TOP UIDL RESP-CODES PIPELINING AUTH-RESP-CODE USER;
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imap_capabilities IMAP4 IMAP4rev1 UIDPLUS SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+;
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# Default SMTP server for the webmail (no encryption, but authentication)
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server {
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listen 10025;
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protocol smtp;
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smtp_auth plain;
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}
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# Default IMAP server for the webmail (no encryption, but authentication)
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server {
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listen 10143;
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protocol imap;
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smtp_auth plain;
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}
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# SMTP is always enabled, to avoid losing emails when TLS is failing
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server {
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listen 25;
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listen [::]:25;
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{% if TLS and not TLS_ERROR %}
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ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
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ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA;
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ssl_prefer_server_ciphers on;
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starttls on;
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{% endif %}
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protocol smtp;
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smtp_auth none;
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}
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# All other protocols are disabled if TLS is failing
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{% if not TLS_ERROR %}
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server {
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listen 143;
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listen [::]:143;
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{% if TLS %}
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starttls only;
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{% endif %}
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protocol imap;
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imap_auth plain;
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}
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server {
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listen 110;
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listen [::]:110;
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{% if TLS %}
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starttls only;
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{% endif %}
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protocol pop3;
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pop3_auth plain;
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}
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server {
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listen 587;
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listen [::]:587;
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{% if TLS %}
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starttls only;
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{% endif %}
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protocol smtp;
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smtp_auth plain login;
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}
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{% if TLS %}
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server {
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listen 465 ssl;
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listen [::]:465 ssl;
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protocol smtp;
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smtp_auth plain login;
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}
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server {
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listen 993 ssl;
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listen [::]:993 ssl;
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protocol imap;
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imap_auth plain;
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}
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server {
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listen 995 ssl;
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listen [::]:995 ssl;
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protocol pop3;
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pop3_auth plain;
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}
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{% endif %}
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{% endif %}
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}
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