How many mail domains are supported? Phillip Cardenas February 24, 2017 23:21 Updated Follow Issue How many mail domains are supported? Solution Mirapoint software supports 500,000 mail domains. Related articles How to accept email for multiple domains? What do these RAID Controller alerts mean? How do I change a domain name on my Mirapoint or RazorGate appliance? Comments 0 comments Please sign in to leave a comment.