<b>mailContentInspectionAction</b> (markup|blackhole|reject)
<b>mailDefaultOptions</b> (TRUE|FALSE),
<b>bATVToken</b>,
-and <b>VoIP</b
+and <b>VoIP</b>
<li>A line of the form <tt>'del field'</tt> will completly remove all
occurrences of a field. Useful e.g. to unset your vacation status.