Exchange 2010: Not read email confirmations at 01h05

Randomly, at 01h05 in the morning, our Exchange server sends out a number of "not read" message tracking emails. See screen shot. This was brought to my attention by our recruiter. She says it has happened before.

I have also had the odd out of office response from contacts referencing a subject line from a meeting request months ago. So this has happened before and for a period of time. The screenshot below is from meetings approximately 4 months ago.

I personally do not respond to Message Tracking from Outlook. All requests are ignored. I can't be sure of my phone or iPad though.

These are all related to meeeting requests as well.

Windows Server 2008 R2 running as a VM on Hyper V
Exchange 2010 Rolup 5

This has been experienced before by another EE member but was not resolved:
http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_26488253.html
Screen-20120406-012259.jpg
xpanditAsked:
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xpanditAuthor Commented:
Anyone?
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Saurabh_naithani23Commented:
Hey, just wanted to confirm one thing...Is it Exchange 2010 SP1 RU5 or Just Exchange 2010 RU5?
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Saurabh_naithani23Commented:
I hope u have tried the following article

http://support.microsoft.com/kb/222163
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xpanditAuthor Commented:
I have no delegates on my mailbox.

SP1. Sorry.
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Saurabh_naithani23Commented:
My suggestion would be to install RU6 as this issue is been addressed. Although it does not look exactly similar but this should help

You receive an NRN of a meeting request 120 days after the recipient accepted the request in an Exchange Server 2010 SP1 environment
http://support.microsoft.com/kb/2544246
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