Index: system/form/subscribe.php
===================================================================
--- system/form/subscribe.php	(révision 2017)
+++ system/form/subscribe.php	(copie de travail)
@@ -6,6 +6,9 @@
    }
 
    function SetupForm() {
+      // this text is duplicated in template/community/lists.html
+      $this->form->addElement('static', null, null, gettext("Please do not subscribe to mailing lists using e-mail accounts protected by mail-back anti-spam systems. These are extremely annoying to the list maintainers and other members, and you may be automatically unsubscribed."));
+
       $this->form->addElement('text', 'email', gettext("Email address:"), array('size' => 40, 'maxlength' => 100));
 
       $this->form->addElement('select', 'subunsub', 'Action', array('subscribe' => 'Subscribe', 'unsubscribe' => 'Unsubscribe'));
Index: template/community/lists.html
===================================================================
--- template/community/lists.html	(révision 2017)
+++ template/community/lists.html	(copie de travail)
@@ -10,6 +10,7 @@
 
 <p>Fill out this <a href="/community/lists/subscribe">form</a>.</p>
 
+<!-- this text is duplicated in system/form/subscribe.php -->
 <p>Please do not subscribe to mailing lists using e-mail accounts protected by
 mail-back anti-spam systems. These are extremely annoying to the list
 maintainers and other members, and you may be automatically unsubscribed.