Re: (DMARC) How a whitelist would work, was Why mailing lists

Miles Fidelman <mfidelman@meetinghouse.net> Fri, 18 April 2014 01:11 UTC

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Date: Thu, 17 Apr 2014 21:11:31 -0400
From: Miles Fidelman <mfidelman@meetinghouse.net>
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Subject: Re: (DMARC) How a whitelist would work, was Why mailing lists
References: <CE39F90A45FF0C49A1EA229FC9899B0507D45766@USCLES544.agna.amgreetings.com> <20140414214949.32126.qmail@joyce.lan> <CE39F90A45FF0C49A1EA229FC9899B0507D460CB@USCLES544.agna.amgreetings.com> <alpine.BSF.2.00.1404142150430.32657@joyce.lan> <CAL0qLwbPMm_i0fqNSGQPv=xZaiNASy=icsRNudaNJ_3PNtX3Og@mail.gmail.com> <alpine.BSF.2.00.1404151832460.38826@joyce.lan> <CAL0qLwZUptJVw85T2FjB2HRGoOvcOUHKiQXeadM0QE9BsFVM9w@mail.gmail.com> <CAKHUCzxpwS+nR9wRGOzU_83f7XabMr0pwB5x-MHrqM-28r80kw@mail.gmail.com> <CAKHUCzzw9mufrTCOBQOkRrZU6wOM21X8Y=FUEKf=qnzS9VESjA@mail.gmail.com> <alpine.BSF.2.00.1404161654430.2065@joyce.lan> <CAL0qLwYT_y5ksCP5DpHGXEK084zVg=6HfpJ2B2khkK7jDByZmQ@mail.gmail.com> <alpine.BSF.2.00.1404170008470.2194@joyce.lan> <9760.1397773072@sandelman.ca> <alpine.BSF.2.00.1404172008250.2116@joyce.lan>
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John R Levine wrote:
>> Are you saying that gmail and yahoo have to know about my 
>> lists.sandelman.ca
>> before I can have gmail/yahoo members on my little local list?
>
> Yeah.  It's clear from the DMARC summary reports I'm getting that the 
> big mail systems already have a pretty good idea of where the mailing 
> lists are, so it should be possible to pre-seed a whitelist so most 
> people won't have to explicitly apply unless something screws up.
>
The big buys already have whitelists - and an awful lot of our mailing 
lists are already on them.  (Every 6 months or so, some large site 
blocks our IP, I go to their postmaster site, fill in the form, and 
every is copacetic again).  The folks who are honoring DMARC p=reject 
are clearly ignoring whitelists that THEY ALREADY HAVE!

Miles Fidelman

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