On 6/11/2025 8:28 PM, Bron Gondwana wrote:
Legitmate alias: [email protected] -> [email protected] -> [email protected]
Source email from: [email protected]

DKIM2: i=1; [email protected][email protected]; d=bbiw.net
DKIM2: i=2; [email protected] [email protected]; d=fastmailteam.com DKIM2; i=3; [email protected] [email protected]; d=fastmailteam.com


OK. That's the 'legitimate' scenario.

Now, how does an illegitimate, Replay scenario look different, where DKIM2 makes clear the distinction between a legitimate sequence from an illegitimate (spamming) one?

d/

--
Dave Crocker

Brandenburg InternetWorking
bbiw.net
bluesky: @dcrocker.bsky.social
mast: @[email protected]
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