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chatmail-core/test-data/message/dkimchecks-2022-09-28/alice@riseup.net/alice@fastmail.com
Hocuri b1c6c40fa7 Check DKIM Authentication-Results (#3583)
Fix #3507

Note that this is not intended for a release at this point! We first have to test whether it runs stable enough. If we want to make a release while we are not confident enough in authres-checking, then we have to disable it.

BTW, most of the 3000 new lines are in `test_data/messages/dkimchecks...`, not the actual code

da3a4b94 adds the results to the Message info. It currently does this by adding them to `hop_info`. Maybe we should rename `hop_info` to `extra_info` or something; this has the disadvantage that we can't rename the sql column name though.

Follow-ups for this could be:
- In `update_authservid_candidates()`: Implement the rest of the algorithm @hpk42 and me thought about. What's missing is remembering how sure we are that these are the right authserv-ids. Esp., when receiving a message sent from another account at the same domain, we can be quite sure that the authserv-ids in there are the ones of our email server. This will make authres-checking work with buzon.uy, disroot.org, yandex.ru, mailo.com, and riseup.net.
- Think about how we present this to the user - e.g. currently the only change is that we don't accept key changes, which will mean that the small lock on the message is not shown.
- And it will mean that we can fully enable AEAP, after revisiting the security implications of this, and assuming everyone (esp. @link2xt who pointed out the problems in the first place) feels comfortable with it.
2022-10-28 12:15:37 +02:00

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Authentication-Results: mx1.riseup.net;
dkim=pass (2048-bit key; unprotected) header.d=fastmail.com header.i=@fastmail.com header.a=rsa-sha256 header.s=fm2 header.b=ZyZhU7V7;
dkim=pass (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm2 header.b=GQt3UCVa;
dkim-atps=neutral
From: <alice@fastmail.com>
To: bot <alice@riseup.net>