What rules exist on blocking mailing list subscribers?

Hi. With regard's to recent abusive emails from Brandon Rampersad <brandon.add.on@gmail.com> (See [1], [2]), what are the processes in place for blocking a mailing list subscription. Whilst the second instance is just plain rude, the first instance is deeply offensive and certainly against the RFC1855 - Netiquette Guidelines [3] to which php.net recommends adherence. Regards, Richard Quadling. [1] http://news.php.net/php.general/306094 [2] http://news.php.net/php.general/306474 [3] http://www.faqs.org/rfcs/rfc1855.html [4] http://docs.php.net/reST/php-src/README.MAILINGLIST_RULES -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling