January 7, 2012 : So thats why I've been having email problems on my phone
December 19, 2011 : There are misconfigurations, and then there are insults
;; ANSWER SECTION: _xmpp-client._tcp.chat.facebook.com. 10 IN CNAME chat.facebook.com. chat.facebook.com. 20 IN A 220.127.116.11
xmpp clients will look for SRV records starting with _xmpp-client._tcp, since this is a CNAME they won't find it...