On 4/14/2025 11:41 PM, Burke, Evan wrote:
Regardless of the specific words we may use to describe it, I've seen some very large email platforms omit some important headers in their DKIM signatures - headers explicitly recommended by the DKIM RFC - and I've seen that absence enable real-world abuse.


Please provide specifics.

d/

--
Dave Crocker

Brandenburg InternetWorking
bbiw.net
bluesky: @dcrocker.bsky.social
mast: @dcrocker@mastodon.social
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