Problem using CFX_ResolveDNS

I am using CFX_ResolveDNS. I use this custom tag to get the domain my visitors are visiting my website from. I pass CGI.REMOTE_ADDR as the parameter, and CFX_ResolveDNS usually returns my visitor's domain name. Now I am finding this problem: sometimes, this custom tag is not capable of finding the

Pass session variables to SPROC from OnSessionEnd

I am storing some variables as session variables in my application. Then, I am trying to store these variables into en MS SQL 2000 DB whenever a timeout happens. I am trying to do it accessing these session variables from application.cfc and passing these variables to a Store Procedure that, in tur