Achieving high availability involves several strategies and technologies:
Redundancy: Deploying multiple servers to ensure that if one server fails, another can take over. Load balancing: Distributing incoming email traffic across multiple servers to avoid overloading any single server. Failover systems: Automatically switching to a backup system in case of a failure. Regular maintenance: Conducting scheduled maintenance and updates to prevent unexpected failures. Monitoring and alerts: Implementing real-time monitoring to detect and resolve issues as they arise.