> On 30 Aug 2023, at 09:21, Alessandro Vesely <ves...@tana.it> wrote:
> 
> On Wed 30/Aug/2023 06:20:47 +0200 Steve Atkins wrote:
>>> On 30 Aug 2023, at 03:38, Grant Taylor 
>>> <gtaylor=40tnetconsulting....@dmarc.ietf.org> wrote:
>>> On 8/29/23 3:15 PM, Steve Atkins wrote:
>>>> Any attempt by senders to filter outbound emails based solely on content 
>>>> is going to have a lot of false negatives and positives, wherever you 
>>>> decide to draw the line.
>>> I find the idea of using different, probably less stringent, filtering on 
>>> outbound than on inbound to be hypocritical.
>> You have much more data for inbound email, and access to a much wider range 
>> of reactions. That’s not “hypocritical”.
>> The only information a sender has that a receiver doesn’t is a broader view 
>> of who the recipients of messages being sent are - and that’s exactly the 
>> information that DKIM replay hides from the sender.
> 
> 
> Large sites should exchange reputation information on each other's accounts. 
> Murray already proposed a standard for doing so.

That doesn’t seem like something that would have any effect on someone sending 
a single message to themselves, which is the perspective a sender is likely to 
have of a DKIM replay.

Cheers,
  Steve

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