On Apr 8, 2014, at 6:26 AM, Dave Crocker <[email protected]> wrote:

>> I agree that redacting the email address is the best of a bad bunch of
>> options, so that's what we'll be implementing.
> 
> 
> So,
> 
> Legitimate recipients of mailing list distributions will not be able to use 
> the Reply command, to respond to legitimate authors?
> 
> d/

It's easy to fix mailing lists without that loss of functionality.

Block any attempt to post to a mailing list from a domain that
publishes strict DMARC. That doesn't affect functionality for
legitimate users and it complies with the domain owners
wishes (however misguided).

We should also have a longer discussion of whether training
people that

  From: "[email protected]" <[email protected]>

is legitimate, rather than badly done phishing, is a good idea.
And whether we'd need meta-DMARC to block mail that's

  From: "[email protected]" <[email protected]>

or whether we'd just apply existing DMARC policies to subdomains
or strings in the human readable comments.

Cheers,
  Steve


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