Gmail's receiving mostly authenticated email

[Jon Callas]

On Dec 14, 2013, at 9:56 PM, Peter Gutmann <pgut001 at cs.auckland.ac.nz> wrote:

> Bill Stewart <bill.stewart at pobox.com> 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