Redundant mail solution on postfix
Looking forward for a mail solution with maximum uptime on mail server running postfix.
What could be ideal solution for this where follwoing to be met.
If for any reasons hardware of server goes down we would at the mercy of God.
Is there some way to have a solution with another hardware in place where if hardware goes down then mail server should switch over to new mail server without any interruption on the mail?
Looking forward for expert inputs on this.