CF7 stops spooling mail

This is a discussion on CF7 stops spooling mail within the Cold Fusion forums in Application Servers & Tools category; Has anyone experienced problems with instances of CF7 that just stop sending mail? The instances we're having problems with stop writing mail files to the mail spool folder after long periods of uptime (several weeks.) The volumes of mail involved are generated from a workflow system at a rate of around one mail per minute for approx.18 hours per day, 6 days a week. We can find no reason for the issue in any of the logs, and the only way to resolve the issue is to restart the problematic instance. We're running CF7 in J2EE configuration. Anyone have any ...