Cluster Administration Guide: Introduction Pro/Ent only

This guide explains how to manage the CipherMail Gateway Enterprise Cluster.

The CipherMail Gateway Enterprise Cluster uses a master/master database cluster (MariaDB) to replicate all changes in real time between the active cluster nodes. The majority set of nodes that can communicate with each other over the network form a cluster. In case of a network partition (i.e., a split between nodes) the majority of nodes (quorum) that can access each other will form the cluster. The nodes that got split of from the cluster will no longer be valid and will stop accepting connections.


  • A functional CipherMail Email Encryption Cluster (minimal 3 nodes).

  • SSH console access to the gateway.