Re: Mailing lists - assumptions

On Sat, Apr 19, 2014 at 11:49:06AM +0200, Alessandro Vesely wrote:
> 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.

The problem is that there might be some receiving servers that will
try to see if the originatingdomain.example.com.INVALID is a valid
domain address, and seeing that it isn't, might reject the e-mail on
that basis.

						- Ted

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