На сколько я понимаю основной системой по мониторингу Exchange является The System Center Operation Manager (SCOM 2007). Есть релиз как для Exchange 2003 так и для Exchange 2007. http://www.microsoft.com/downloads/details...;displaylang=en http://www.microsoft.com/downloads/details...;displaylang=en Feature Bullet Summary: This management pack monitors Microsoft Exchange Server 2003 and includes monitors and rules to track performance, availability, and reliability of Exchange core components and functionality. • MAPI, OWA, OMA, EAS synthetic logon transactions • Mail flow synthetic transaction • Monitoring using Self-Tuning Thresholds • Comprehensive performance metric collection • 1000+ Event rules with associated knowledge • Database status • Database size • Mailbox statistics • Public folder statistics • Message tracking log statistics • Exchange and related OS Service monitoring • Configuration monitoring • Topology discovery of Exchange deployment http://technet.microsoft.com/en-us/opsmgr/cc539535.aspx