Re: Mailing lists - assumptions

On Fri 18/Apr/2014 21:20:04 +0200 Theodore Ts'o wrote:
> On Fri, Apr 18, 2014 at 01:43:51PM -0500, Pete Resnick wrote:
> 
>> 2. In the end, we want mailing lists to be able to send messages that say
>> "From: [email protected]" and not have to say "From:
>> [email protected]".
> 
> Because if originatingdomain.example.com still has a DEMARC p=rejet
> policy, and there are sites that will be continuing to honor that
> policy, then assumption/requirement #2 is going to result in huge
> problems (just as we have huge problems today).

Perhaps it would suffice to have DMARC define alignment in terms of
the From: domain /or/ the To: domain.  That would assume that any
recipient can redistribute the mail it receives, leaving copyright
questions to lawyers.  In fact, "To:" is as visible as "From:".

> From: user+originatingdomain.example.com@dmark-remediation.mailing-list.org
> 
> .... where dmark-remediation.mailing-list.org is an MX record to an
> automated bounce server that will explain to the user that they need
> to really send their e-mail to [email protected] via
> a 550 error.

Oh well, it is easier, clearer, and safer to have

   From: [email protected]

and let submission servers issue that 550 directly.

Ale

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