On Tue, Dec 17, 2024 at 09:55:32AM +0800, Bitfox via Postfix-users wrote:
> I saw that when messages sent to duck.com for forwarding, duck.com will
> remove the original DKIM info from headers, to protect the sender privacy.
>
> I am just curious how to remove that DKIM in postfix?
Top-level Header removal is easily enough implemented with:
header_checks = pcre:${config_directory}/header_checks.pcre
# Empty or without the logic that should apply to just top-level.
nested_header_checks =
header_checks.pcre:
/^DKIM-Signature: ... possibly match some additional details .../ IGNORE
hide DKIM-sig
--
Viktor.
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