On 4/16/2025 5:54 PM, Murray S. Kucherawy wrote:
On Sun, Apr 13, 2025 at 11:56 AM Richard Clayton
<[email protected]> wrote:
>Bcc header field? Doesn’t that contradict the “blank” carbon copy?
I think "B" means "Blind".
Yup.
I would argue that any value in signing the field is defeated by the
fact that it is supposed to get removed before it proceeds to
delivery. Some agents might remove it sooner than delivery. Removing
a signed header field has a negative impact at verification time.
It is important to /retain/ the BCC field, for display to the recipient,
since it is the only way the recipient can tell why they got the
message. (and probably that they should not do a reply all.)
Historical uses of the field has it sometimes be empty and other times
contain the address of the recipient.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
bluesky: @dcrocker.bsky.social
mast: @[email protected]
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