Anycast provider for SMTP?

Mon Jun 15 18:02:48 UTC 2015

On Mon, Jun 15, 2015 at 1:54 PM, Jürgen Jaritsch <jj at anexia.at> wrote:
> I guess there is no real chance without conntrack ... I'll try to use something like LVS+mysql conntrack (no idea if this even exists ...) ....

not clear how helpful that is?

> -----Original Message-----
> From: Joe Hamelin [joe at nethead.com]
> Received: Montag, 15 Juni 2015, 19:51
> To: NANOG list [nanog at nanog.org]
> Subject: Anycast provider for SMTP?
>
> 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

'when one site goes down' ... then the other works fine, right? smtp
is not latency sensitive in the sense that a 30second timeout for a
server will mean delivery to the secondary... right?

> (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?