Re: Anycast provider for SMTP?
On 6/18/2015 16:25, Jonas Björk wrote:
Because clients will switch to unicast for renewal. Also clients will stay with the current server forever, so you might have a bad distribution of load between the servers. If one server was down everyone will switch to the other and never go back until forced.
Why wouldn't they go back to the nearest server when it comes back online?
Been awhile, but it seems like they try to "renew" the lease they have, with the server that holds it. -- sed quis custodiet ipsos custodes? (Juvenal)
On Jun 18, 2015, at 11:29 PM, Larry Sheldon <larrysheldon@cox.net> wrote:
On 6/18/2015 16:25, Jonas Björk wrote:
Because clients will switch to unicast for renewal. Also clients will stay with the current server forever, so you might have a bad distribution of load between the servers. If one server was down everyone will switch to the other and never go back until forced.
Why wouldn't they go back to the nearest server when it comes back online?
Been awhile, but it seems like they try to "renew" the lease they have, with the server that holds it.
-- sed quis custodiet ipsos custodes? (Juvenal)
The clients speak unicast with one single ip-helper which address is shared by all the servers. They can't choose which ever server to talk to.
participants (2)
-
Jonas Björk -
Larry Sheldon