diff --git a/xep-0016.xml b/xep-0016.xml
index dde19cd7..d16aff05 100644
--- a/xep-0016.xml
+++ b/xep-0016.xml
@@ -21,6 +21,12 @@
   <shortname>privacy</shortname>
   &pgmillard;
   &stpeter;
+  <revision>
+    <version>1.5</version>
+    <date>2006-11-21</date>
+    <initials>psa</initials>
+    <remark><p>In order to track XEP-0191, specified that server should not ignore messages from blocked entities but instead should return a &lt;service-unavailable/&gt; error.</p></remark>
+  </revision>
   <revision>
     <version>1.4</version>
     <date>2006-10-04</date>
@@ -726,8 +732,13 @@
     <p>As a result of creating and applying the foregoing list, the user will not receive any communications from, nor send any stanzas to, any other users.</p>
   </section2>
   <section2 topic="Blocked Entity Attempts to Communicate with User" anchor="protocol-error">
-    <p>If a blocked entity attempts to send message or presence stanzas to the user, the user's server SHOULD silently drop the stanza and MUST NOT return an error to the sending entity.</p>
-    <p>If a blocked entity attempts to send an IQ stanza of type "get" or "set" to the user, the user's server MUST return to the sending entity a &lt;service-unavailable/&gt; stanza error, since this is the standard error code sent from a client that does not understand the namespace of an IQ get or set.  IQ stanzas of other types SHOULD be silently dropped by the server.</p>
+    <p>If a blocked entity attempts to send a stanza to the user (i.e., an inbound stanza from the user's perspective), the user's server shall handle the stanza according to the following rules:</p>
+    <ul>
+      <li>For presence stanzas (including notifications, subscriptions, and probes), the server MUST NOT respond and MUST NOT return an error.</li>
+      <li>For message stanzas, the server SHOULD return an error, which SHOULD be &unavailable;.</li>
+      <li>For IQ stanzas of type "get" or "set", the server MUST return an error, which SHOULD be &unavailable;. IQ stanzas of other types MUST be silently dropped by the server.</li>
+    </ul>
+    <p>If the foregoing suggestions are followed, the user will appear offline to the contact.</p>
     <example caption='Blocked entity attempts to send IQ get'><![CDATA[
 <iq type='get'
   to='romeo@example.net'