Hector Santos wrote:
> What has been crossing my mind regarding this NULL MX setup, was the
> possible privacy issue with NULL MX root domain "Traceability" aspect
> with legacy MTAs performing SMTP "Implicit MX" (No MX record, Fallback
> to A record) logic. What will the A query IP resolved to when the
> exchange points to the root?
If millions of anycast root servers without a centralized
administrator are distributed world wide, it makes it
difficult for NSA monitor queries to all the root servers,
because of massive number of them.
And, it's not just for NULL MX. Many queries go to the root
servers.
Masataka Ohta
PS
OTOH, queries to 8.8.8.8 administrated by google are easy
victims of NSA.
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