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Re: [dmarc-ietf] Ticket #55 - Clarify legal and privacy implications of failure reports

John R Levine <johnl@taugh.com> Sun, 20 December 2020 18:17 UTC

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Date: Sun, 20 Dec 2020 13:17:03 -0500
Message-ID: <6bba023-d3d9-63a5-8441-11dac9a05e28@taugh.com>
From: John R Levine <johnl@taugh.com>
To: Alessandro Vesely <vesely@tana.it>, dmarc@ietf.org
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Subject: Re: [dmarc-ietf] Ticket #55 - Clarify legal and privacy implications of failure reports
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> On Fri 18/Dec/2020 21:05:43 +0100 John R Levine wrote:
>> [ failure reports leak PII including forwarded recipients ]

> Are failure reports about forwarded messages still useful?  If not so much, 
> perhaps we could deplore them.

There's no mechanical way to tell whether a message has been forwarded as 
opposed to bcc or a mailing list or a local redistribution list or 
whatever.

Given how few sites send failure messages, and that we all seem able to 
manage our DMARC setups without them, I don't think they're worth a lot of 
effort.  Hence my suggestion for simplified advice.


> Keeping the target of forwarded messages private needs to be addressed at 
> emailcore as well, though.  Regular bounces leak the same info.

That seems like a great way to destroy mailing lists by not telling them 
which recipients are bouncing.

Regards,
John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly

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