I have a scheduled task setup to run the daily cron script for our billing system.
However, on most days (90%+) the tasks gets executed twice, if not three or four times. This results in duplicate emails to our customers for things like payment reminders.
Has anyone else experienced this and knows how to sort it?
The task settings are:
Type: check website availabability
Send message if: response status = 500
URL: http://www.mydomain.com/admin/cron.php
Schedule: Daily @ 05:58
Enabled: Yes
Priority: Normal
Max Execution Time: 1 Hour