diff --git a/forward.module b/forward.module
index e87ff73..908efe5 100644
--- a/forward.module
+++ b/forward.module
@@ -1076,6 +1076,7 @@ function forward_mail($key, &$message, $params) {
     $message['headers']['MIME-Version'] = '1.0';
     $message['headers']['Content-Type'] = 'text/html; charset=utf-8';
     $message['headers']['Reply-To'] = $params['headers']['Reply-To'];
+    $message['headers']['X-Originating-IP'] = ip_address();
   }
 }