On Tue, Oct 6, 2009 at 8:19 PM, Rob McEwen <r...@invaluement.com> wrote: > Warren Togami wrote: >> You are misunderstanding the question. A single DNS query could >> respond different numbers meaning they are hits on different lists. >> Your lists that are subsets or supersets of other lists can easily use >> this. The querying software need only to know what each result means. > > Not saying that this is a bad idea, but it does have its limitations. > For example, some lists are into the hundreds of megabytes large, and > getting the whole file rsncned and updated can take more than several > minutes. Often, such lists update only once or twice per hour, if even > that often.
Hmm ... interesting. If implemented via rbldnsd, each list could be maintained in a separate file, and since rbldnsd can be configured to build a single zone using multiple files on the back end, different lists could be refreshed at different rates. Your comments about tradeoffs and bitmasking still stand, of course. Royce
