first of all, i`m a newbie in ironport. So Sorry for my basic questions, but i can`t find anything in the manuals.
I want to configure the two boxes in High Availability Mode (Cluster Mode) but i don`t understand the ironport cluster architecture.
1) in machine mode i can configure IP-Adresses -> OK
2) in Clustermode i can configure listeners and bind them to a IP-Address -> OK
But how works the HA?
A) Should i configure on both boxes the same IP to use one MX Record? And if one box is down the other takes over?
B) Or should i configure different IPs and configure two MX Records?
And if one box is down the second MX will be used.
Thanks in advance