I've been reading many articles concerning round robin recently. But I'm not sure to fully understand. Here is my understanding.
- the external DNS must me configured as such:
mail.contoso.com A <IP address of EX1>
mail.contoso.com A <IP address of EX2>
- in the event that a server goes down, it can take up to 20 seconds to get another connection (Outlook 2013, ActiveSync, OWA)
But I see nothing about the internal DNS. In order to access OWA locally from mail.contoso.com DNS records have been added in the local DNS. Is it something we should not be doing?