Vote for Sentry-go Quick Exchange Monitor
The Sentry-go Quick Exchange Monitor is a quick & easy to use monitoring solution for Microsoft Exchange. Capable of monitoring your Exchange environment 24 hours a day, Sentry-go can be used to provide both basic server level monitoring or lower-level Exchange-based verification out of the box. With it's fully integrated and customisable alerting facilities, Sentry-go can not only detect problems, but take automatic action and/or notify you in a way that suits your work patterns and your organisation.