Sympa is a mailing list manager.

To configure SSO with Sympa, use Magic authentication: a special SSO URL is protected by LL::NG, Sympa will display a button for users who wants to use this feature.

Since version 1.9 of LLNG, old Auto-Login feature has been removed since it works only with Sympa-5 which has been deprecated

Edit the file "auth.conf", for example:

vi /etc/sympa/auth.conf

And fill it:

        service_name                   Centralized auth service
        service_id                          lemonldapng
        email_http_header            HTTP_MAIL
        netid_http_header             HTTP_AUTH_USER
        internal_email_by_netid    1
You can also disable internal Sympa authentication to keep only LemonLDAP::NG by removing user_table paragraph

Note that if you use FastCGI, you must restart Apache to enable changes.

You can also use <portal>?logout=1 as logout_url to remove LemonLDAP::NG session when "disconnect" is chosen.

Configure Sympa virtual host like other protected virtual host but protect only magic authentication URL.

The location URL end is based on the service_id defined in Sympa apache configuration.
  • For Apache:
<VirtualHost *:80>
       <Location /wws/sso_login/lemonldapng>
       PerlHeaderParserHandler Lemonldap::NG::Handler
  • For Nginx:
server {
  listen 80;
  root /path/to/application;
  # Internal authentication request
  location = /lmauth {
    include /etc/nginx/fastcgi_params;
    fastcgi_pass unix:/var/run/llng-fastcgi-server/llng-fastcgi.sock;
    # Drop post datas
    fastcgi_pass_request_body  off;
    fastcgi_param CONTENT_LENGTH "";
    # Keep original hostname
    fastcgi_param HOST $http_host;
    # Keep original request (LLNG server will received /llauth)
    fastcgi_param X_ORIGINAL_URI  $request_uri;
  # Client requests
  location /wws/sso_login/lemonldapng {
    auth_request /lmauth;
    auth_request_set $lmremote_user $upstream_http_lm_remote_user;
    auth_request_set $lmlocation $upstream_http_location;
    error_page 401 $lmlocation;
    try_files $uri $uri/ =404;
    include /etc/lemonldap-ng/nginx-lua-headers.conf;
  location / {
    try_files $uri $uri/ =404;

Go to the Manager and create a new virtual host for Sympa.

Configure the access rules and define the following headers:

  • Auth-User
  • Mail