[181073] in North American Network Operators' Group
Re: Anycast provider for SMTP?
daemon@ATHENA.MIT.EDU (Christopher Morrow)
Mon Jun 15 14:03:58 2015
X-Original-To: nanog@nanog.org
In-Reply-To: <86e46e2e7e7c41b397bb4baacc864a30@anx-i-dag02.anx.local>
Date: Mon, 15 Jun 2015 14:02:48 -0400
From: Christopher Morrow <morrowc.lists@gmail.com>
To: =?UTF-8?Q?J=C3=BCrgen_Jaritsch?= <jj@anexia.at>
Cc: "nanog@nanog.org" <nanog@nanog.org>, "joe@nethead.com" <joe@nethead.com>
Errors-To: nanog-bounces@nanog.org
On Mon, Jun 15, 2015 at 1:54 PM, J=C3=BCrgen Jaritsch <jj@anexia.at> wrote:
> I guess there is no real chance without conntrack ... I'll try to use som=
ething like LVS+mysql conntrack (no idea if this even exists ...) ....
not clear how helpful that is?
> -----Original Message-----
> From: Joe Hamelin [joe@nethead.com]
> Received: Montag, 15 Juni 2015, 19:51
> To: NANOG list [nanog@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 i=
s
> a problem of broken sessions when routes change.
>
> Have any of you seen something like this work in the wild?
