Benoit Tellier created JAMES-3985:
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Summary: Implement RFC-8617 The Authenticated Received Chain (ARC)
Protocol
Key: JAMES-3985
URL: https://issues.apache.org/jira/browse/JAMES-3985
Project: James Server
Issue Type: Improvement
Components: Mailet Contributions
Reporter: Benoit Tellier
h3. What
https://datatracker.ietf.org/doc/html/rfc8617
https://arc-spec.org/
The Authenticated Received Chain (ARC) protocol provides an
authenticated "chain of custody" for a message, allowing each entity
that handles the message to see what entities handled it before and
what the message's authentication assessment was at each step in the
handling.
IE secured and standard Received headers.
Example:
{code:java}
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none;
b=S4DQRVgRLMeqank+UkagI9DIPrecaQa+tD+qrvD1XyuYolqGtWYole5yzajb6B71t9ceuFfCWYBmbze89vRt9bCc4KpcjEjzEzuf0xTo4HevTzZ62DEqXKzuXn+nWSGEAdrAcXS3w4RaoyeFC3ypKalcHJggiMStBBKuMG2k1jTk5vxirVqtxLr526AQ3XNGDEewIRMyhbjKDHKinjknJGLucWWli5YOheM4CDVwZXsbNbfhp8TPQitFd411+SDWRduqN2uKE/IqHn1FgqacCKkQaew5MS+GywnbCiNp2BHRgHMJbOt2gIHhFFLiPAow/98PyAdCPAqRmHqvUqSyRQ==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com;
s=arcselector9901;
h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1;
bh=FrVWL4P2FSzOMb/KTATCDQLYPJHy7pwVkwAdt3ueFh8=;
b=E+f/prHAHynoo8GBK4s4Dxsdch6uPcErYd9R9h24Lb9sHlBVycnXby5PjcwqGtnvqEo14+8MEdxv41PYzIGHldjWh8CPgK6YHeWu+Zk8zwy05atOXXRgGkiRdge2bFSgtP4RLvoyV9kwngnR/vCIbSyTchnrZKyQ2IVCyZbEZtpDBgv4YtF9/972A+hZQLvymg4rZai74RDrVxVPJ2hmKOBSfaqTlUIm82HO5D2DMbbN50EmN9cicVOVkFo1d9m7sz7azq5VzybS/52B4nd7uby7ITkM/Enw/tihr9E6NHA31HgqEt8dx9pjTt4VJjVZbjSrv1AyKBl6VSxPerKzeA==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass
smtp.mailfrom=docaposte.fr; dmarc=pass action=none header.from=docaposte.fr;
dkim=pass header.d=docaposte.fr; arc=none
{code}
h3. How
Implement a Mailet implementing ARC
Implement a Matcher validating ARC
Documentation (README)
If applicable, parsing ARC records shall be done as a separate maven module.
h3. Definition of done
- Absence of ARC headers shall be nicely handled
- Failed ARC shall be rejected
- Able to send email to gmail (validates ARC)
- Passes the ARC test suite https://github.com/ValiMail/arc_test_suite
- Apache james registered on https://arc-spec.org/?page_id=79
h3. GSOC notes
Presenting a 1 week POC on the topic (as a separate mailet) would greatly
improve the submission.
How to write custom mailet / matcher:
https://github.com/apache/james-project/tree/master/examples/custom-mailets
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