[mailop] IPv6 DNSBL

Jim Popovitch jimpop at gmail.com
Thu Mar 27 15:15:05 UTC 2014

On Thu, Mar 27, 2014 at 9:21 AM, David Hofstee <david at mailplus.nl> wrote:
> There must be a good reason for people to get of their asses and start implementing things like DMARC. All the banks (!$%^) I talk to do not have any reason to implement it swiftly (they turn on p=none and then all progress stops). Frustrating that they are too lazy to implement a few DNS records.
> It only needs firm backing by 3+ large companies like Hotmail. Give everyone on IPv6 without DMARC a large spamscore (and publish that beforehand ;-) ). Give me ammunition and all corporates will move.

Please no.  DMARC is great for 1:1 direct email  (from:me, to:you).
Anything other than p=none fails miserably once the scope is expanded.
 Let me give you examples of things that would fail miserably under
your suggestion above:

1)  This list

2)  The recent, heavily forwarded and reflected, Cisco PSIRT notices.

NANOG is not the place to debate this, nor is it the place to advocate
self inflicted harm.

-Jim P.

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