SPF Server

I am comtemplating writing an SPF Server program to offload some of the
functionality of SPF from the MTA. It would operate very much in the way
that a Black List server operates. Queries would be in the form:

   4.214.8.207.v2.listbox.com

It would maintain a dynamic cache with a fairly long TTL and respond to DNS
type queries with:

        SPFPass - No Record Found
        SPFFail - 127.0.0.2
        SPFNeutral - 127.0.0.4
        SPFSoftFail - 127.0.0.8
        SPFNone - 127.0.0.16
        SPFUnknown - 127.0.0.16
        SPFError - 127.0.0.32

The MTA would then react in whatever manner it would be configured to
respond. It is already partially developed.

J.A Coutts
Systems Engineer
MantaNet/TravPro