SMTP over IPv6 : gmail classifying nearly all IPv6 mail as spam since 20140818

[Gert Doering]

Hi,

On Fri, Aug 22, 2014 at 10:51:26PM -0700, Michael Chang wrote:
> If a spammer gets a hold of a /64, then the spammer can send 18 billion
> billion (~2^64) different email addresses, each coming from a different IP
> address. Never-mind that a spammer can go to a half-dozen tunnel brokers
> and get /48s for free.

And if the reputation system is worth a cup of salt, it will notice that
it already has down-graded "sufficient" addresses inside the /64 (/56, /48,
/32) to down-grade the rest of it.

Just because it needs a bit more thinking than for IPv4 doesn't mean it
cannot be done.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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