nanog mailing list archives

Re: SHAKEN/STIR Robocall Summit - July 11 2019 at FCC


From: Michael Thomas <mike () mtcc com>
Date: Mon, 8 Jul 2019 17:58:17 -0700


On 7/8/19 5:54 PM, Keith Medcalf wrote:
On Monday, 8 July, 2019 18:08, Michael Thomas <mike () mtcc com> wrote:

when we did DKIM back in the day, almost nobody was requiring SMTP
auth which meant the providers could say "blame me" via the DKIM
signature, >but couldn't really take much action since they didn't
know who has doing it.
This is because DKIM was a solution to a problem that did not exist.  You always know the identity of the MTA sending 
you a message, there never was a need for DKIM.  It was a solution to a problem that does not and did not nor will ever 
exist.


::eyeroll:: pray tell, how do you "always" know the identity of the MTA sending you a message?


Mike


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