Subject: Re: [dmarc-ietf] draft-levine-dkim-conditional-02

From: "John Levine" <[email-masked]>
Date: 1 Oct 2015 16:37:01 -0000

>> Quite correct.  I would expect conditional signatures to be applied by
>> large mail systems, using their private list of domains that look like
>> mailing lists to decide who gets them.
>
>How much of a barrier to entry to new or small mailing list providers
>(or new domains being used there) does this cause?

Beats me.  Depends on how the large providers manage their provider
lists.  In an optimistic scenario, they see the welcome message from
the list and use that to add the list's domain to the resigner list.

On the other hand, compared to the current situation, ...

R's,
John