Problem with email notifications from batch jobs

In AX 2009 I can set up a report or process to run in batch on a repetitive schedule with the alert notification set up to email me when the batch status changes to: Ended, Error, Canceled. Sometimes an email is sent out and other times no email is sent out. Has anyone else come across this issue of psoriatic email alerts.

When I look in the notification screen at the completed jobs some show as also alert by email and some do not. They all should show as also alert by email.