How can I tell in the log if a query was successful or refused due to recursion?

[Tony Toews]

Folks

I'm told that my DNS server is participating in "recursive dns dos 
attack".  So I've locked things down I think.  More on that to follow as a 
separate posting.   So I'm looking at my log entries and I'm seeing the 
same kind of traffic now as before I removed the recursion option.

How can I tell in the log if a query was successful or refused due to 
recursion?  An example of my current log follows:

14-Dec-2005 18:37:24.145 client 216.18.224.133#41538: query: e.tn.co.za ANY 
ANY +E
14-Dec-2005 18:37:25.599 client 216.18.224.133#51561: query: e.tn.co.za ANY 
ANY +E
14-Dec-2005 18:37:26.067 client 216.18.224.133#46417: query: e.tn.co.za ANY 
ANY +E
14-Dec-2005 18:37:27.630 client 216.18.224.133#43677: query: e.tn.co.za ANY 
ANY +E
14-Dec-2005 18:37:28.114 client 216.18.224.133#58498: query: e.tn.co.za ANY 
ANY +E

Bind 9.3.1 on a Win 2003 Server.  Serving as DNS for 23 very low traffic 
domains hosted on that same system.

Thanks, Tony