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Gmail's receiving mostly authenticated email
On Dec 14, 2013, at 9:56 PM, Peter Gutmann <[email protected]> wrote:
> Bill Stewart <[email protected]> writes:
>
>> Saw an interesting article from Gmail on their inbound email statistics. Over
>> 91% is authenticated with either DKIM or SPF.
>
> What percentage of that is using 512-bit keys?
Zero. DKIM requires at least a 1024-bit key. Whatever you might want to say about those is a different discussion.
SPF is non-cryptographic authentication.
Jon