Comcast (comcast.net) sends TLSRPT for both DANE and MTA-STS connection 
attempts.

--
Alex Brotman
Sr. Engineer, Anti-Abuse & Messaging Policy
Comcast

From: mailop <mailop-boun...@mailop.org> On Behalf Of Bill Cole via mailop
Sent: Saturday, November 16, 2024 9:39 PM
To: Michael Rathbun via mailop <mailop@mailop.org>
Subject: [EXTERNAL] Re: [mailop] SMTP TLS Reports for forged senders.


On 2024-11-16 at 19:55:52 UTC-0500 (Sat, 16 Nov 2024 18:55:52 -0600)
Michael Rathbun via mailop <m...@honet.com<mailto:m...@honet.com>>
is rumored to have said:

I confess to being completely mystified. What is the nature of these TLS
reports, and where do they come from?

Presumably RFC8460 
https://datatracker.ietf.org/doc/html/rfc8460<https://urldefense.com/v3/__https:/datatracker.ietf.org/doc/html/rfc8460__;!!CQl3mcHX2A!EGwRpqowIJPd9pqE6Cin4r4Hv6jCW75lWyXx3M9rCFFBBiMoR_agpPuN1awTjG0Vhn6UIzftc7Rs_NsTEx0$>.
 Intimately related to MTA-STS, RFC8461.

It can also be used with DANE, but I don't know of anyone doing so.




   b...@scconsult.com<mailto:b...@scconsult.com> or 
billc...@apache.org<mailto:billc...@apache.org>

   (AKA @grumpybozo@toad.social and many 
*@billmail.scconsult.com<mailto:*@billmail.scconsult.com> addresses)

   Not Currently Available For Hire
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