Anycast provider for SMTP?

Fri Jun 19 05:19:24 UTC 2015

>
> You can achieve the above DNS trickery using various load balancers that
> other people in this thread have already mentioned. You can also install
> your own geomaps in your own nameservers and handle it yourself, or you can
> buy managed DNS service from various people that can do this kind of thing.
>

Just curious, how does DNS load balancing work if people are using
8.8.8.8/208.67.222.222 or basically any public resolvers that cache and
have a significant (relatively speaking) user-base? Is the actual percent
of requests so small that it doesn't matter?

--
James