<RULES version="3" ><RULE enabled="1" predefined="digiportal" name="Delete bogus postmaster emails" explain="This rule deletes fake bounce-back messages" action="deletesender"><FROM><ITEM>postmaster@</ITEM><ITEM>mailer-daemon@</ITEM></FROM><BODY><ITEM>(no email address in whitelist)</ITEM></BODY></RULE></RULES>