just in case somebody need it, this is the string which allows you to write into access.log the reverse resolved Hostnames.
Be aware that doing this, on every url that you can slow down your entire environment as McAfee says,
anyway just add this string to the User-Defined.logline.
String.ReplaceIfEquals (List.OfString (DNS.Lookup.Reverse (Client.IP)),"","-")
For commodity i've added it right below the IP address but you can write it wherever you like inside the file.
Hope it helps
Message was edited by: Valeinrete on 12/05/11 08:48:37 CDT