> On 14 Aug 2021, at 12:38 am, Benny Pedersen <[email protected]> wrote:
>
>> It
>> means that the From: header is included twice in the
>> data being signed. But it's odd. The extra inclusion is
>> as an empty From: header.
>
> i will say this is a cleat bug to have resolved
Instead of empty speculation, a radical idea would be to read
the DKIM specification and understand why signing some headers
one more time than they appear in the message is a feature of
that specification.
As already noted upthread, this precludes adding additional
instances of the header in question without invalidating the
signature.
--
Viktor.
