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Outlook 2010 Unread messages timing error

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.

Thanks Experts
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npcinfo
Asked:
npcinfo
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1 Solution
 
Glen KnightCommented:
What are the servers syncronizing?

Is there a pattern to the read receipts? i.e. are they from a specific recipient?
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npcinfoAuthor Commented:
They're syncing AD data specific to Exchange, emails, public folder data, GAL, and the Exchange 2007 server is the bridgehead.

No they aren't just from one sender BUT they do only appear to be between the people based in the office where the Exchange 2010 server is based.
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Hendrik WieseCommented:
This could possibly be an outlook rule that marks the messages as read. Check if there is any rules that might cause the issue?
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npcinfoAuthor Commented:
Hendrik to clarify what you are asking

Am I right in saying you think there might be a rule on the outlook client that may be causing this?

Thanks
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Hendrik WieseCommented:
Sorry I misread your post, I though you were referring to read receipts instead of delivery receipts. So you say that they are receiving delivery receipts (as if the message that was sent earlier in the day only got delivered at that time?)
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npcinfoAuthor Commented:
No, you are correct I have just checked with the user again and they confirm (new information)

1. It seems the read receipts are linked to meeting/calendar events
2. They occur from the requested read receipt
3. They seem to always be 'processed' at 1:02 am

Example:
------Original Message ---------
From: Mrs A
Sent: 13 October 2011 01:02
To: Mrs B
Subject  Not read: Drinks Meeting

Your message was deleted without being read on 13 October 2011  00:01:57  UTC

Thanks Expert
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Hendrik WieseCommented:
This might be some retention policy on the user's mailbox: Like a rule within outlook that deletes or archives mails older than a specific date and only run's ones a day at 1AM.
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npcinfoAuthor Commented:
It's something that has recently started to happen, but I will check the users rules just in case they have set any up in the outlook client. To the best of my knowledge there are no other retention policies other than the standard exchange ones.

Exchange MC set for users calendar are:
Calendar Settings - Automate Processing:

Selected are: Enable Calendar Attendant, Remove Old Meeting Requests & Responses, and Mark new meeting requests as tentative.
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Hendrik WieseCommented:
Please have a look at the following technet answer: http://social.technet.microsoft.com/Forums/en-AU/exchange2010/thread/656f47ff-1f35-429f-8712-3875d2049116

You are not alone with this problem and I wish I could tell you why Exchange send these messages, but I can't.
 
See the information in this thread
 http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/99923719-83e9-4423-a950-7c6ef207c99b
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Hendrik WieseCommented:
Reference: http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/99923719-83e9-4423-a950-7c6ef207c99b

Hi Adam,
 Your user is not alone with this problem.
The only workaround that I know of is to NOT request for a read receipt when it comes to meeting requests.
 What´s the use of them anyway?
 
See these two threads
 http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/61123f6c-13a4-4eef-8355-d70a85ee021a
 http://social.technet.microsoft.com/Forums/en-US/exchange2010/thread/8f7e6ec7-8a2a-4df8-ba2b-a0f0c5128892
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Hendrik WieseCommented:
So you solution would be to uncheck "Allow delivery reports"
 
http://technet.microsoft.com/en-us/library/bb124931.aspx
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npcinfoAuthor Commented:
Microsoft have recognised this as an issue and have included the fix in Exchange 2010 update rollup 6
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npcinfoAuthor Commented:
Thanks to the experts who responded but it was in fact a MS 'bug' which is now fixed in the rollup.
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