We created a workflow application in our test environment in SP2010 and task e-mails work fine in our test environment. However, when we copied the content database to production, the "assigned to" task alert e-mails stopped working immediately. There was a post in this forum with a similar problem, and the answer to getting the e-mails working again was to toggle off and on the list settings advanced option 'Do you want an e-mail to be sent when a task is assigned". When I did this toggle off and on, the next couple of task assignment e-mails were sent out when a task was assigned and it worked fine. However, the problem is back and the task e-mails are not being sent even though the task is being generated. The toggle off and on no longer work at all. Any assistance on this problem would be appreciated.