On Mon, Oct 20, 2003 at 11:42:58PM +0100, Roy Badami wrote:
| 
| This overloading of A records as flags bothers my sense of protocol
| aesthetics far more than the use of TXT records versus a new RR.
| (Although its pragmatic impact may be lower...)  This use of A records
| here just seems weird to me...
| 
You mean for the PI results?
It's to leverage the existing set of tools that were built for DNSBLs
and now can be used for whitelisting.  eg. rbldns.
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