spf-discuss
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Re: considering XML

2004-01-21 13:18:36
At 11:50 AM 1/21/2004, Meng Weng Wong wrote:
Well, the idea is that if a sender domain wants to define a new
mechanism, it can change the xmlns attribute to point to its DTD and
people out there can subscribe to it.  Is that the idea?

Wait a second - If I'm reading this right, that means that SPF lookups, in addition to adding 50-200% overhead to the DNS response, would also involve HTTP requests as well?

I've had a hard enough time with DNS timeouts as it is. With XML namespace support we'd have to deal with HTTP requests and their overhead. Not to mention watching out for people deliberately publishing invalid or arbitrarily large DTDs.

And there are people complaining SPF is too complicated *now*!


Kelson Vibber
SpeedGate Communications <www.speed.net>

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