3. If the message's original DKIM signature included the To or CC header and used
the simple canonicalization scheme, validation of that signature will now fail.
forward their mail. Can I prevent Sendmail from altering email headers as it forwards messages? Is there something else I can do?
Phil! Gold wrote:
DKIM signature ... simple canonicalization scheme, validation of that signature will now fail.Ask the sender not to use "simple"?
Can I prevent Sendmail from altering email headers as it forwards messages?Unfortunately that requires a code change. Maybe you can write a
patch to add an option for sendmail to act as "pure MTA" which does
not modify headers?
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