The Halon SMTP software is built for clustering, and we encourage all customers to use at least two nodes, for performance and fault tolerance. Given the nature of email, clustering operates in an active-active, master-master, share-nothing fashion. Watch our video which shows how easy it’s to set up!
Halon is a flexible security and operations platform for in-transit email. It enables companies that build and operate large-scale
email services to offer competitive features by rapid implementation, and to lower costs of maintenance through
reliable deployment and reduced complexity.