SHAKEN/STIR Robocall Summit - July 11 2019 at FCC

Tue Jul 9 00:58:17 UTC 2019

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