No, this is not what I'm talking about. I'm talking about bugs in the
implementation of the DKIM algorithm. This is a complex algorithm, SPF is
more simple to code.

And yes DKIM is more resilient in forwarding than SPF.

On 12/11/12 1:32 PM, "John R Levine" <[email protected]> wrote:

>> The intrinsic error rate of the SPF technology is way lower than the
>>error
>> rate of DKIM. The computation is way more complex for DKIM and because
>>of
>> the DMARC reports we are discovering bugs in DKIM libraries.
>
>I would agree that DKIM is somewhat harder to debug, but I wouldn't say
>its 
>"intrinsic error rate" is lower.  They're different.  DKIM survives a
>variety 
>of common forwarding setups, e.g., alumni or professional association
>courtesy addresses, that SPF doesn't.


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