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Brad Knowles wrote:
Werner Koch wrote:
Do you think splitting the zones up in say us.e.r._pka.example.net
would be helpful?
Putting the zones in a hierarchy will certainly help. That way
you don't have to change and reload an entire zone with millions of
users, each time that a single modification has to be made.
However, I would be careful in choosing a particular hashing
scheme that will be set in stone -- what is sustainable for a small
site will be totally inappropriate for a large site.
And here's where I think SPF's macro feature (or a similar facility) would
be useful. It would enable sites to specify their own custom schemes
(within certain limits).
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