diff --git a/reference/mail/ini.xml b/reference/mail/ini.xml
index e947497ad9..78a491029d 100644
--- a/reference/mail/ini.xml
+++ b/reference/mail/ini.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.4 $ -->
+<!-- $Revision: 1.5 $ -->
 <section id="mail.configuration">
  &reftitle.runtime;
  &extension.runtime;
@@ -113,6 +113,11 @@
      <command>qmail-inject</command> does not require any option to
      process mail correctly.
     </para>
+    <para>
+     This directive works also under Windows. If set, <varname>smtp</varname>,
+     <varname>smtp_port</varname> and <varname>sendmail_from</varname> are
+     ignored and the specified command is executed.
+    </para>
    </listitem>
   </varlistentry>
  </variablelist>