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mailu/core/nginx/conf/nginx.conf

397 lines
11 KiB
Nginx Configuration File

# Basic configuration
user nginx;
worker_processes auto;
error_log /dev/stderr notice;
pid /var/run/nginx.pid;
load_module "modules/ngx_mail_module.so";
events {
worker_connections 1024;
}
http {
# Standard HTTP configuration with slight hardening
include /etc/nginx/mime.types;
default_type application/octet-stream;
sendfile on;
keepalive_timeout 65;
server_tokens off;
absolute_redirect off;
resolver {{ RESOLVER }} valid=30s;
{% if REAL_IP_HEADER %}
real_ip_header {{ REAL_IP_HEADER }};
{% endif %}
{% if REAL_IP_FROM %}{% for from_ip in REAL_IP_FROM.split(',') %}
set_real_ip_from {{ from_ip }};
{% endfor %}{% endif %}
# Header maps
map $http_x_forwarded_proto $proxy_x_forwarded_proto {
default $http_x_forwarded_proto;
'' $scheme;
}
map $uri $expires {
default off;
~*\.(ico|css|js|gif|jpeg|jpg|png|woff2?|ttf|otf|svg|tiff|eot|webp)$ 97d;
}
map $request_uri $loggable {
/health 0;
/auth/email 0;
default 1;
}
access_log /dev/stdout combined if=$loggable;
# compression
gzip on;
gzip_static on;
gzip_types text/plain text/css application/xml application/javascript
gzip_min_length 1024;
# TODO: figure out how to server pre-compressed assets from admin container
{% if KUBERNETES_INGRESS != 'true' and TLS_FLAVOR in [ 'letsencrypt', 'cert' ] %}
# Enable the proxy for certbot if the flavor is letsencrypt and not on kubernetes
#
server {
# Listen over HTTP
listen 80;
listen [::]:80;
{% if TLS_FLAVOR == 'letsencrypt' %}
location ^~ /.well-known/acme-challenge/ {
proxy_pass http://127.0.0.1:8008;
}
{% endif %}
# redirect to https
location / {
return 301 https://$host$request_uri;
}
}
{% endif %}
# Main HTTP server
server {
# Favicon stuff
root /static;
# Variables for proxifying
set $admin {{ ADMIN_ADDRESS }};
set $antispam {{ ANTISPAM_ADDRESS }}:11334;
{% if WEBMAIL_ADDRESS %}
set $webmail {{ WEBMAIL_ADDRESS }};
{% endif %}
{% if WEBDAV_ADDRESS %}
set $webdav {{ WEBDAV_ADDRESS }}:5232;
{% endif %}
client_max_body_size {{ MESSAGE_SIZE_LIMIT|int + 8388608 }};
# Listen on HTTP only in kubernetes or behind reverse proxy
{% if KUBERNETES_INGRESS == 'true' or TLS_FLAVOR in [ 'mail-letsencrypt', 'notls', 'mail' ] %}
listen 80;
listen [::]:80;
{% endif %}
# Only enable HTTPS if TLS is enabled with no error and not on kubernetes
{% if KUBERNETES_INGRESS != 'true' and TLS and not TLS_ERROR %}
listen 443 ssl http2;
listen [::]:443 ssl http2;
include /etc/nginx/tls.conf;
ssl_stapling on;
ssl_stapling_verify on;
ssl_session_cache shared:SSLHTTP:50m;
add_header Strict-Transport-Security 'max-age=31536000';
{% if not TLS_FLAVOR in [ 'mail', 'mail-letsencrypt' ] %}
if ($proxy_x_forwarded_proto = http) {
return 301 https://$host$request_uri;
}
{% endif %}
{% endif %}
# Remove headers to prevent duplication and information disclosure
proxy_hide_header X-XSS-Protection;
proxy_hide_header X-Powered-By;
add_header X-Frame-Options 'SAMEORIGIN';
add_header X-Content-Type-Options 'nosniff';
add_header X-Permitted-Cross-Domain-Policies 'none';
add_header Referrer-Policy 'same-origin';
# mozilla autoconfiguration
location ~ ^/(\.well\-known/autoconfig/)?mail/config\-v1\.1\.xml {
rewrite ^ /internal/autoconfig/mozilla break;
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
}
# microsoft autoconfiguration
location ~* ^/Autodiscover/Autodiscover.json {
rewrite ^ /internal/autoconfig/microsoft.json break;
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
}
location ~* ^/Autodiscover/Autodiscover.xml {
rewrite ^ /internal/autoconfig/microsoft break;
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
}
# apple mobileconfig
location ~ ^/(apple\.)?mobileconfig {
rewrite ^ /internal/autoconfig/apple break;
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
}
{% if TLS_FLAVOR == 'mail-letsencrypt' %}
location ^~ /.well-known/acme-challenge/ {
proxy_pass http://127.0.0.1:8008;
}
{% endif %}
# If TLS is failing, prevent access to anything except certbot
{% if KUBERNETES_INGRESS != 'true' and TLS_ERROR and not (TLS_FLAVOR in [ 'mail-letsencrypt', 'mail' ]) %}
location / {
return 403;
}
{% else %}
include /overrides/*.conf;
# Actual logic
{% if ADMIN == 'true' or WEBMAIL != 'none' %}
location ~ ^/(sso|static)/ {
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
}
{% endif %}
{% if WEB_WEBMAIL != '/' and WEBROOT_REDIRECT != 'none' %}
location / {
expires $expires;
{% if WEBROOT_REDIRECT %}
try_files $uri {{ WEBROOT_REDIRECT }};
{% else %}
try_files $uri =404;
{% endif %}
}
{% endif %}
{% if WEBMAIL != 'none' %}
location {{ WEB_WEBMAIL }} {
{% if WEB_WEBMAIL != '/' %}
rewrite ^({{ WEB_WEBMAIL }})$ $1/ permanent;
rewrite ^{{ WEB_WEBMAIL }}/(.*) /$1 break;
{% endif %}
include /etc/nginx/proxy.conf;
auth_request /internal/auth/user;
error_page 403 @webmail_login;
proxy_pass http://$webmail;
}
{% if WEB_WEBMAIL == '/' %}
location /sso.php {
{% else %}
location {{ WEB_WEBMAIL }}/sso.php {
{% endif %}
{% if WEB_WEBMAIL != '/' %}
rewrite ^({{ WEB_WEBMAIL }})$ $1/ permanent;
rewrite ^{{ WEB_WEBMAIL }}/(.*) /$1 break;
{% endif %}
include /etc/nginx/proxy.conf;
auth_request /internal/auth/user;
auth_request_set $user $upstream_http_x_user;
auth_request_set $token $upstream_http_x_user_token;
proxy_set_header X-Remote-User $user;
proxy_set_header X-Remote-User-Token $token;
error_page 403 @webmail_login;
proxy_pass http://$webmail;
}
location @webmail_login {
return 302 /sso/login;
}
{% endif %}
{% if ADMIN == 'true' %}
location {{ WEB_ADMIN }} {
include /etc/nginx/proxy.conf;
proxy_pass http://$admin;
expires $expires;
}
location {{ WEB_ADMIN }}/antispam {
rewrite ^{{ WEB_ADMIN }}/antispam/(.*) /$1 break;
auth_request /internal/auth/admin;
proxy_set_header X-Real-IP "";
proxy_set_header X-Forwarded-For "";
proxy_pass http://$antispam;
}
{% endif %}
{% if WEBDAV != 'none' %}
location /webdav {
rewrite ^/webdav/(.*) /$1 break;
auth_request /internal/auth/basic;
auth_request_set $user $upstream_http_x_user;
include /etc/nginx/proxy.conf;
proxy_set_header X-Remote-User $user;
proxy_set_header X-Script-Name /webdav;
proxy_pass http://$webdav;
}
location ~ ^/.well-known/(carddav|caldav) {
return 301 /webdav/;
}
{% endif %}
{% endif %}
location /internal {
internal;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Authorization $http_authorization;
proxy_pass_header Authorization;
proxy_pass http://$admin;
proxy_pass_request_body off;
proxy_set_header Content-Length "";
}
location /health {
return 204;
}
}
# Forwarding authentication server
server {
# Variables for proxifying
set $admin {{ ADMIN_ADDRESS }};
listen 127.0.0.1:8000;
location / {
proxy_pass http://$admin/internal$request_uri;
}
}
include /etc/nginx/conf.d/*.conf;
}
mail {
server_name {{ HOSTNAMES.split(",")[0] }};
auth_http http://127.0.0.1:8000/auth/email;
proxy_pass_error_message on;
resolver {{ RESOLVER }} valid=30s;
error_log /dev/stderr info;
{% if TLS and not TLS_ERROR %}
include /etc/nginx/tls.conf;
ssl_session_cache shared:SSLMAIL:50m;
{% endif %}
# Advertise real capabilities of backends (postfix/dovecot)
smtp_capabilities PIPELINING "SIZE {{ MESSAGE_SIZE_LIMIT }}" ETRN ENHANCEDSTATUSCODES 8BITMIME DSN;
pop3_capabilities TOP UIDL RESP-CODES PIPELINING AUTH-RESP-CODE USER;
imap_capabilities IMAP4 IMAP4rev1 UIDPLUS SASL-IR LOGIN-REFERRALS ID ENABLE IDLE LITERAL+;
# ensure we talk HAPROXY protocol to the backends
proxy_protocol on;
# Default SMTP server for the webmail (no encryption, but authentication)
server {
listen 10025;
protocol smtp;
smtp_auth plain;
auth_http_header Auth-Port 10025;
}
# Default IMAP server for the webmail (no encryption, but authentication)
server {
listen 10143;
protocol imap;
smtp_auth plain;
auth_http_header Auth-Port 10143;
}
# SMTP is always enabled, to avoid losing emails when TLS is failing
server {
listen 25;
listen [::]:25;
{% if TLS and not TLS_ERROR %}
{% if TLS_FLAVOR in ['letsencrypt','mail-letsencrypt'] %}
ssl_certificate /certs/letsencrypt/live/mailu/fullchain.pem;
ssl_certificate /certs/letsencrypt/live/mailu-ecdsa/fullchain.pem;
{% endif %}
{% if TLS_PERMISSIVE %}
ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;
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;
ssl_prefer_server_ciphers on;
{% endif %}
starttls on;
{% endif %}
protocol smtp;
smtp_auth none;
auth_http_header Auth-Port 25;
}
# All other protocols are disabled if TLS is failing
{% if not TLS_ERROR %}
server {
listen 143;
listen [::]:143;
{% if TLS %}
starttls only;
{% endif %}
protocol imap;
imap_auth plain;
auth_http_header Auth-Port 143;
}
server {
listen 110;
listen [::]:110;
{% if TLS %}
starttls only;
{% endif %}
protocol pop3;
pop3_auth plain;
auth_http_header Auth-Port 110;
}
server {
listen 587;
listen [::]:587;
{% if TLS %}
starttls only;
{% endif %}
protocol smtp;
smtp_auth plain login;
auth_http_header Auth-Port 587;
}
{% if TLS %}
server {
listen 465 ssl;
listen [::]:465 ssl;
protocol smtp;
smtp_auth plain login;
auth_http_header Auth-Port 465;
}
server {
listen 993 ssl;
listen [::]:993 ssl;
protocol imap;
imap_auth plain;
auth_http_header Auth-Port 993;
}
server {
listen 995 ssl;
listen [::]:995 ssl;
protocol pop3;
pop3_auth plain;
auth_http_header Auth-Port 995;
}
{% endif %}
{% endif %}
}