diff --git a/authsympa.php b/authsympa.php
new file mode 100644
index 0000000..364cc08
--- /dev/null
+++ b/authsympa.php
@@ -0,0 +1,69 @@
+<?php
+/** User authentication against SYMPA server
+    Sympa is a mailling list server. It can handle authentication with 
+    - a username (a email adress)
+    - a password
+    - a list to check if the user is recorded in 
+    - a Sympa SOAP server WSDL
+    It use the SOAP protocol. So the PHP SOAP library is needed and the network
+    must be open between the Web server and the Sympa server. */
+/* POC : 
+$auth = new authsympa ();
+$auth->wsdl = "https://lists.domain.tld/sympa/wsdl";
+$auth->list = "listtest@lists.domain.tld";
+$auth->connect ();
+var_dump ($auth->authentication ("user@domain.tld", "Pa$$word!"));
+*/
+require_once ("auth.php");
+class authsympa extends auth
+{
+  public $wsdl = null;
+  public $list = null;
+  public $function = "subscriber"; // can be substriber, owner, editor
+  private $client = null;
+  private $authkey = null;
+  private $email = null;
+
+  public function __construct ()
+  {
+    if (! class_exists ("SoapClient"))
+      throw new Exception (_("No SOAP PHP library available"), 500);
+  }
+
+  public function connect ()
+  {
+    if ($this->wsdl === null)
+      throw new Exception (_("No WSDL provided to Sympa auth"), 401);
+    $this->client = new SoapClient($this->wsdl);
+  }
+
+  public function authentication ($email, $password)
+  {
+    if ($this->client === null)
+      throw new Exception (_("The SOAP connection is not opened"), 401);
+    if ($this->list === null)
+      throw new Exception (_("The list to check is not defined"), 401);
+    $this->authkey = $this->client->login ($email, $password);
+    if ($this->authkey === null)
+      throw new Exception (
+                       _("Can't connect with provided email/password to sympa"),
+                       401);
+    $this->email = $email;
+    $rc = $this->client->authenticateAndRun ($email, $this->authkey,
+                      'amI', array ($this->list, $this->function, $email));
+    if ($rc === null)
+      return FALSE;
+    return $rc;
+  }
+
+  public function getdetails ()
+  {
+      throw new Exception (_("The details can't be provided by Sympa"), 404);
+  }
+
+  public function changepassword ($oldpassword, $newpassword)
+  {
+    throw new Exception (_("The password can't be change for SYMPA users"),
+                         405);
+  }
+}