Preventing Data Loss: Backup and Recovery Strategies for Exchange Server Administrators

**Executive Summary:** This article reviews the growing risk of data loss in on-premises Exchange Server environments—highlighting causes such as ransomware, exploited vulnerabilities (e.g., ProxyLogon), hardware failures, and human error—and recommends practical backup and recovery strategies (VSS-based backups, full/incremental backups, transaction log management, 3-2-1 rule, recovery databases, dial-tone recovery, and third-party recovery tools) alongside proactive security and access-control measures to reduce downtime, financial and reputational impact.