On Mon, Jun 15, 2015 at 1:54 PM, Jürgen Jaritsch <j...@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 [j...@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?