Use Cases and Deployment Scope
This is a great tool to protect against spam and malicious emails. Like every product it isn't perfect but it does a good job and creates a regular list of emails that have been blocked. I think the frequency of reports can be adjusted but we run a report every 8 hours which is good to take note of false positives but 3 reports a day is a lot to manage. Overall there are not a lot of false positives and I would say that close to 95% of the time it is correct with what it blocks.
Other Software Used
Webroot Endpoint Protection, WatchGuard Network Security