Re: [spfbis] [dnsext] Obsoleting SPF RRTYPE

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On Apr 30, 2013, at 12:28, Alessandro Vesely wrote:
...The basic fact that killed the SPF type is
the ability to use TXT as a replacement.  There must be an analogous
of Gresham's law:  "Bad types drive out good ones."

I disagree with the assertion that what killed SPF is "the ability to use TXT as a replacement."   It has nothing to do with one option being superior to the other, it was the lack of technical incentive to switch from one to the other.  I post this in the sense that if the root cause is not understood, no solution will stick.  Here is a message with my recounting of what led us to this point:


I don't see the death of SPF has a harbinger of things to come.  There's a strong case to be made the failure happened before 2004 and the root cause has since been corrected by changing the RRTYPE type allocation policies.  Still that fix was too late to ever let SPF sprout wings.

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Edward Lewis             
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