In article <caaqnkjdzds+wgtys-81rknh8ujqivpp8hkqo7c_yovta5tz...@mail.gmail.com> 
you write:
>Rewriting the from address to something that fails -- and thus is
>potentially going to fail delivery at any ISP that checks to see if
>the from address is valid -- seems crappy to me.

Sorry, I don't understand what point you're making here.  Where do you
see something that fails?

R's,
John



>Regards,
>Al Iverson
>On Sat, Oct 13, 2018 at 8:01 PM John Levine via dmarc-discuss
><dmarc-discuss@dmarc.org> wrote:
>>
>> In article <e4bd2580-22c4-ce96-4c6c-766bb0dcf...@cheshireeng.com> you write:
>> > > When the IETF was trying to figure out what sort of anti-DMARC hackery
>> > > to do for its mailing lists, we did some experiments.  ...  So we gave
>> > > up and rewrite the From: headers.
>> >
>> >A defect in the method used in this list (and Y!Groups, fwiw) is that
>> >every message from the list comes through with the exact same email
>> >address, <dmarc-discuss@dmarc.org>, in the From field.
>>
>> There's more than one way to rewrite a From: header, and that's the worst.
>>
>> On my system if the incoming header looks like this:
>>
>> From: Marissa <mme...@yahoo.com>
>>
>> It gets rewritten like this:
>>
>> From: Marissa <me...@yahoo.com.dmarc.fail>
>>
>> The IETF does more or less the same thing but it's uglier because the
>> guy who did it believes there is something special about the three
>> characters =40 in an address.
>>
>> R's,
>> John
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>>
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>> terms (http://www.dmarc.org/note_well.html)
>
>
>
>-- 
>al iverson // 312-725-0130 // miami
>http://www.aliverson.com
>http://www.spamresource.com
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>
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>(http://www.dmarc.org/note_well.html)
>


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