On 4/2/22 8:01 PM, John Levine wrote:
ARC lets the recipient system look back and do what we might call retroactive filtering, using info about messages as they arrived at the previous forwarder. While it would be nice if lists did a better job of spam filtering, they don't, and ARC is a reasonable remedy for that. I'll be eager to see the papers substantiating this. Until then I remain completely skeptical. It's an experimental RFC for a reason. Let's see the data.
I'd also like to see a paper substantiating your claim that mailing lists do a bad job of spam filtering. In my experience it is a non-problem. People from Google have told me that is the specific reason that they need all the complexity of ARC rather than just whitelisting mailing
It appears that Michael Thomas <mike@mtcc.com> said: lists. If you think they're lying, or you know more about their mail stream than they do, not much we can do about that.
Then they should publish it since it's an IETF document it so everybody can evaluate it. Otherwise it's just a private vanity project. I've seen absolutely nothing to conclude it is not. And impugning me about "lying" is an ad hominem and against NANOG's rules. Mike