diff --git a/Doc/Sdi/mail.xml b/Doc/Sdi/mail.xml
index 49ae12ff237ce64764d45651bb6375cf2d1a6375..5372458d23d5ba7e0d7c6d5eccebb20060802003 100644
--- a/Doc/Sdi/mail.xml
+++ b/Doc/Sdi/mail.xml
@@ -386,7 +386,7 @@
           </listitem>
 
           <listitem>
-            <para>try to send an Spam Test Mail</para>
+            <para>try to send a Spam Test Mail</para>
           </listitem>
 
           <listitem>
@@ -406,7 +406,8 @@
         <title><acronym>SPF</acronym> (optional)</title>
 
         <para>more Spam prevention techniques like <acronym>DMARC</acronym>,
-        <acronym>DKIM</acronym> and <acronym>DANE</acronym>.</para>
+        <acronym>DKIM</acronym>, <acronym>DANE</acronym>, Postscreen and other
+        Policy Deamons.</para>
       </section>
     </section>
   </section>