Anycast provider for SMTP?

Mon Jun 15 17:55:48 UTC 2015

Well we, Genuity, use to use Cisco Distributed Director to do this.   Basically it was a DNS server that ran on a Cisco Router, and could use a lot of different metrics to give an answer, which included routing based metrics.   

Johno

> On Jun 15, 2015, at 1:50 PM, Joe Hamelin <joe at nethead.com> wrote:
> 
> I have a mail system where there are two MX hosts, one in the US and one in
> Europe.  Both have a DNS MX record metric of 10 so a bastardized
> round-robin takes place.  This does not work so well when one site goes
> down.   My solution will be to place a load balancer in a hosting site
> (virtual, of course) and have it provide HA.  But what about HA for the
> LB?  At first glance anycasting would seem to be a great idea but there is
> a problem of broken sessions when routes change.
> 
> Have any of you seen something like this work in the wild?
> 
> 
> --
> Joe Hamelin, W7COM, Tulalip, WA, 360-474-7474