I setup wirless network (a WLC-4402 with AP ), I would like to know that if a guest access our network, may I get the notification from syslog?

Dear I am beginner of PIX I set up a network Internet ----PIX--- mailserver and DNS And I run the following command conduit permit udp DNS eq 53 any conduit permit udp mailserver eq smtp any I can resolve the MX and IP of mailserver in internet zone...