Project Server 2007 Task Reminder Email not sent

I have a PS 2007 installation with Alerts and Reminder Emails configured. The Alert emails get sent with no problems, but the scheduled Reminder email is not being sent. I looked at the Timer Job Definition and the Timer Job
Status. The job is getting run successfully, but the emails are never sent. Strangely the Job Definition title refers to a Shared Service Provider that no longer exists,
the PWA Instance was moved in the past to a diferent SSP. How do I troubleshoot this or get this Timer Job reset to the correct SSP? I have tried using the Alerts and Reminders screen and changing some parameters, but the Reminder emails still are not sent.