Earl Hood wrote:
RFC-2822 explictly states that header fields names are to be treated
case insensitive and the header fields are to be unfolded before any
further processing is done on the field.
I have yet to see any convincing arguments to go contrary to these
specifications. And if they do exist, they should be explcitly
mentioned in the DKIM specification so adopters clearly understand
why existing practice is not being followed or modified.
You need to be more specific about which canonicalization that you
are talking about because nowsp doesn't suffer from these problems.
Mike