On Sat 29/Oct/2022 14:24:15 +0200 Douglas Foster wrote:
[...]
1) These fields are used with some frequency in observed signatures, but I
withhold judgement as I am not fluent in MIME.
mime-version content-type content-transfer-encoding;
These are MTA's responsibility. Protecting them hardly helps identifying the
message —except that signing content-type is mandatory for those who use l=.
Some forwarders do rewrite these fields anyway, so signing them shortens
signature's validity.
Best
Ale
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