Best way to configure MX for clustering ?

[bougatoyta]

Hi,

I want to setup a PMG cluster.

What is the best way to setup DNS record ?

I see 2 possibility, the first one like the documentation with priority :

pmg1.mydomain.com A x.x.x.x pmg2.mydomain.com A x.x.x.x pmg3.mydomain.com A x.x.x.x mydomain.com MX pmg1.mydomain.com mydomain.com MX pmg2.mydomain.com mydomain.com MX pmg3.mydomain.com

Or more like a round robin way (a bit like microsoft exchange online with outlook protection)

pmg.mydomain.com A x.x.x.x pmg.mydomain.com A y.y.y.y pmg.mydomain.com A z.z.z.z mydomain.com MX pmg.domain.com

Is there one way better than the other ?

 

[poetry]

Does this help https://forum.proxmox.com/threads/redundant-servers-and-load-balancing-using-mx-records.73/ ?