Anycast provider for SMTP?

John Orthoefer jco at direwolf.com
Tue Jun 16 00:56:26 UTC 2015


> On Jun 15, 2015, at 8:00 PM, Randy Bush <randy at psg.com> wrote:
> 
> dns is udp


15 years ago when we set up 4.2.2.1, there was a fair amount of TCP based DNS.   We tried for a bit to support it via the anycast address, but ultimately we decided the support issues weren’t worth it.  The few customers that asked/required it were given non-anycast addresses to use for TCP based DNS. 

I really think the OPs best answer is some DNS based load balancer, that can take metrics based on routing.

johno






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