Event ID : 120 , Schedule and Delivery Processor error
we get this error daily at around 07:30AM, no schedules saved.
we think its due to a domain name change.
Event Type: Error
Event Source: Schedule and Delivery Processor
Event Category: Activation
Event ID: 120
Time: 7:33:00 AM
Failed to decrypt symmetric key. Most likely cause is the serivce username has changed.