While there is not anything TECHNICALLY wrong with the concept, the
problem is that most people in the threat detection space have already
decided NOT to advertise to a potential spammer that they know the
message is spam.
And any RFC which says you SHOULD and yet will promptly be ignored, is
probably not the best use of time/RFC's.
But for those who DO want to advertise it to the sender, it is good if
there is a standard set out, but the RFC should be clear that this is
simply a standardization, and NOT a recommendation.
As a company who spends a lot of time doing analysis directly in the
SMTP layer, it also opens up a can of worms.
Do we add a code for every use case?
258 Deliver to the Marketing Folder
257 Stripped Attachments before delivery
256 Added your IP to our Blacklist
254 Accepted, but stripping headers
(Poor examples, but helps address my point)
Suggest that for those that want to present additional information, that
it simply be textual on the 250 OK. Especially since the same message
from a different sending MTA might get a different result, or maybe we
only want to help a certain MTA or company get more information, eg an ESP
Hope my feedback is valuable.
On 2022-03-30 10:37, Brotman, Alex wrote:
Hey folks,
I wanted to send an update for this draft. I received (negative) feedback from
one person via the list, though several outside of the list were supportive. I
wanted to try to clear up some of the language in the draft. Appreciate
feedback from those who are interested to read.
https://www.ietf.org/archive/id/draft-brotman-srds-01.txt
https://datatracker.ietf.org/doc/html/draft-brotman-srds-01
Thanks
--
Alex Brotman
Sr. Engineer, Anti-Abuse & Messaging Policy
Comcast
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