Re: [dmarc-ietf] Mailing lists - assumptions

On 18 Apr 2014, at 19:43, Pete Resnick <[email protected]> wrote:
> 3. If an originator sends mail to a mailing list, the originator is implicitly giving permission for the list to re-distribute the message "From:" the originator.
> 
> 4. If an originating site allows its users sending mail to mailing lists at all, the site is OK with *any* mailing list re-distributing mail from its users. so long as the mailing list received the mail directly from the originating user through the originating site. That is, originating sites don't care about pre-vetting mailing lists; they just care that the mail sent by mailing lists came directly from their users.

I think these two points are understated.  Even if you are a free mail provider like the one that has got so much attention recently, surely your reputation isn't helped by a single malicious message sent to a single malicious mailing list, that now has the power to make the provider's life extremely miserable when it is ruthlessly and swiftly mass-mailed without the provider's authorisation or infrastructure?

Cheers,
Sabahattin

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