[170958] in North American Network Operators' Group

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Re: DMARC -> CERT?

daemon@ATHENA.MIT.EDU (Miles Fidelman)
Mon Apr 14 13:07:53 2014

Date: Mon, 14 Apr 2014 13:05:38 -0400
From: Miles Fidelman <mfidelman@meetinghouse.net>
CC: NANOG <nanog@nanog.org>
In-Reply-To: <5BA8DD2F-EBA5-4521-945D-EBF9A4ECDB74@heliacal.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

Isn't it the other way around?  They don't want their users to be able 
to send to mailing lists.  They receive traffic from the lists just 
fine.  Their policy considers only effects mail originating from their 
users.  Yahoo subscribers can receive messages form nanog just fine, but 
they can't send to it.

Miles

Laszlo Hanyecz wrote:
> I don't see what the big deal is here.  They don't want your messages and they made that clear.  Their policy considers these messages spam.  If you really want to get your mailing list messages through, then you need to evade their filters just like every other spammer has to.
>
> -Laszlo
>
>
> On Apr 14, 2014, at 4:32 PM, Miles Fidelman <mfidelman@meetinghouse.net> wrote:
>
>> Well... how about this, from Yahoo's own posting:
>> We know there are about 30,000 affected email sending services, but we also know that the change needed to support our new DMARC policy is important and not terribly  difficult to implement.
>>
>> To me - this sure looks, smells, and quacks like a denial-of-service attack against a system I operate, and the subscriber to the lists that I support -- somewhat akin to exploding a bomb in a public square, and then taking credit for it.
>>
>> Miles Fidelman
>>
>> -- 
>> In theory, there is no difference between theory and practice.
>> In practice, there is.   .... Yogi Berra
>>
>>


-- 
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra



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