Message Server Integration Guide › Policy Engine Hubs › Policy Engine Hubs Overview

Policy Engine Hubs Overview

The role of a policy engine hub is to allocate emails to individual policy engines. Policy engine hubs can accept e‑mails from email and archive server agents (Exchange, Domino and Enterprise Vault), the Network Boundary Agent (NBA), and also from Event Import.

A policy engine hub handles each email with minimal delay. It distributes email processing across multiple remote policy engines to optimize load-balancing and maximize throughput. It can also handle hardware failures on remote policy engines, seamlessly redistributing events to other policy engines if necessary.

Example policy engine hub deployment

1 Event sources, including CA DataMinder Event Import (1a) and e‑mail and archive server agents (1b) forward emails to the policy engine hub (2). The hub distributes e‑mails to individual policy engine (3) for processing. The resulting events are replicated up to the CMS (4).