Here's my Policy:

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE policy PUBLIC "policy-
builder-dtd" "C:\Program Files\Novell\Designer\eclipse\plugins
\com.novell.idm.policybuilder_2.0.0.200804041644\D TD\dirxmlscript.dtd">
<policy>
<rule>
<description>Veto all events</description>
<conditions>
<and/>
</conditions>
<actions>
<do-veto/>
</actions>
</rule>
</policy>



(It's the LAST policy to be applied in the Subscriber Event
Transformation Policies)