Re: [IETF] DMARC methods in mailman

[Viktor Dukhovni <[e-mail]>]

> On Dec 26, 2016, at 3:52 PM, Theodore Ts'o <[e-mail]> wrote:
> 
> By that argument, there's no excuse for the big mailer providers for
> bouncing List mail because of DMARC.  They could just reference the
> List-ID field, and display something like this:
> 
>    <From> via mailing list <list-id header contents>

Many things continue to exist that should be otherwise...

> But they don't do this.  Why, pray tell?

Inertia, lack of imagination, architectures that enforce simple
policy during the SMTP transaction, that don't leave room for more
nuanced handling in the UI.

> Why aren't they doing this
> instead of waiting and hoping ARC will solve the problem?  Maybe
> because users are clueless enough that they would still be getting
> confused?

Someone would need to write the requisite code.  It is easier to
just shift the cost onto the tiny population that uses mailing
lists.

-- 
	Viktor.