Following error comes up when scheduling Toad to run the health check from the command line.
Error: "Mail Error: 10061 connection refuse"
This problem occurs when a new task is attempting to execute when the previous task has not completed. The running task will block the new task from executing.
To resolve this problem, simply increase the time interval between each scheduled task. This way, there would be no time conflicts between each scheduled tasks.
This only occurs when user has multiple tasks queued in the Task Scheduler.