End user problem, Using Windows 7 PC's with Outlook 2010 (not with Office SP1 at the time of the error but updated to SP1 as of this afternoon) user receives seemingly in batches, a number of delivery receipts for unread messages, showing times in the early hours of the morning e.g. 13/10/11 at 01:02. When no one is at work at their organisation.
This has started to happen only in the last 2-3 weeks, they are connected to an Exchange 2010 server v14.00.0722.000. There is another exchange server (2007) in the organisation and the two do 'synchronise' overnight. The configuration has been in place from the begining of this year.