nanog mailing list archives
Re: Anycast provider for SMTP?
From: Max Tulyev <maxtul () netassist ua>
Date: Mon, 15 Jun 2015 22:16:46 +0300
I see no major problems to use anycast for that. The problem will be in rare case when particular routing chain from client to one of your servers will be changed until TCP stream is active. SMTP have short connections. Even if it happens, it will look as just broken connection for client, and it will shortly re-try it. Am I lost something? On 15.06.15 20:50, Joe Hamelin 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
Current thread:
- Re: Anycast provider for SMTP?, (continued)
- Re: Anycast provider for SMTP? Guillaume Tournat (Jun 15)
- Re: Anycast provider for SMTP? Joe Abley (Jun 15)
- Re: Anycast provider for SMTP? James Hartig (Jun 19)
- Re: Anycast provider for SMTP? Christopher Morrow (Jun 19)
- Re: Anycast provider for SMTP? Joe Abley (Jun 19)
- Re: Anycast provider for SMTP? Christopher Morrow (Jun 19)
- Re: Anycast provider for SMTP? Rob Seastrom (Jun 20)
- Re: Anycast provider for SMTP? James Hartig (Jun 19)
- Re: Anycast provider for SMTP? Tony Finch (Jun 19)
- Re: Anycast provider for SMTP? Christopher Morrow (Jun 19)
- Re: Anycast provider for SMTP? Bill Woodcock (Jun 19)
- Re: Anycast provider for SMTP? Joe Hamelin (Jun 15)
- Re: Anycast provider for SMTP? Rafael Possamai (Jun 15)
- Re: Anycast provider for SMTP? Joe Hamelin (Jun 15)
- Re: Anycast provider for SMTP? William Herrin (Jun 16)
- Re: Anycast provider for SMTP? Joe Hamelin (Jun 16)
- RE: Anycast provider for SMTP? Chuck Church (Jun 17)