nanog mailing list archives
Re: Anycast provider for SMTP?
From: Christopher Morrow <morrowc.lists () gmail com>
Date: Mon, 15 Jun 2015 14:02:48 -0400
On Mon, Jun 15, 2015 at 1:54 PM, Jürgen Jaritsch <jj () 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 () 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 is a problem of broken sessions when routes change. Have any of you seen something like this work in the wild?
Current thread:
- Anycast provider for SMTP? Joe Hamelin (Jun 15)
- RE: Anycast provider for SMTP? Jürgen Jaritsch (Jun 15)
- Re: Anycast provider for SMTP? Christopher Morrow (Jun 15)
- Re: Anycast provider for SMTP? Joe Hamelin (Jun 15)
- Re: Anycast provider for SMTP? William Herrin (Jun 15)
- Re: Anycast provider for SMTP? Christopher Morrow (Jun 15)
- RE: Anycast provider for SMTP? Jürgen Jaritsch (Jun 15)
- Re: Anycast provider for SMTP? John Orthoefer (Jun 15)
- Re: Anycast provider for SMTP? William Herrin (Jun 15)
- Re: Anycast provider for SMTP? Nick Hilliard (Jun 15)
- Re: Anycast provider for SMTP? Dave Taht (Jun 15)
- Re: Anycast provider for SMTP? Joe Abley (Jun 15)
- Re: Anycast provider for SMTP? Dave Taht (Jun 15)
- Re: Anycast provider for SMTP? Randy Bush (Jun 15)
- Re: Anycast provider for SMTP? Dave Taht (Jun 15)
- Re: Anycast provider for SMTP? Nick Hilliard (Jun 15)