In case anyone encounters this, a customer of ours brought this to our attention. Basically, Exchange Server 2010 RU 1 or greater introduced a very odd Duplicate Message Detection bug. You encounter the bug when a delegate receives the same meeting request on behalf of the delegator and to themselves. Instead of two meeting requests for the delegate to respond to in their in-box, there is only the one sent to the delegate. Additionally, if the delegate has two different delegators and both delegators are invited to the same message. The delegate will receive only one meeting request which is randomly for either delegator.
Apparently per this posting on the Exchange forums there are some other scenarios where this bug is encountered:http://social.technet.microsoft.com/Forums/en-GB/exchange2010/thread/a717020c-1deb-4d76-8697-ac5f886ebdeb. Basically, the bug is an issue with the “Duplicate Message Detection” feature on the Store Driver. In the posting, MSFT says that this bug is only encountered when after installing RU 1 and will be addressed by a later roll up or SP1. However, I’ve tested just applying RU 3 and (as one would expect) the bug is still there.
So… if you see this one… do not panic. While the issue is kinda of a big issue that will most likely impact the big wigs, the Exchange product team is aware of the issue and will fix it at some later date. Oh wait… maybe we should panic…
If you like this, check out some other posts from Tyson:
- Using social networks to establish a publicly verifiable level of trust…
- Which browser is more secure IE8, Safari 4, Firefox 3.5, Chrome 4, or Opera 10?
- When a computer science degree matters, and when it doesn't
- Since when did cloud computing become/need a manifesto?
- Why would one phish using a Certificate Authority (CA) as bait?
- Would I trust you, if everyone else trusted you?
- Here is a good question: Is scripting programming or just systems administration?
- Fun with PowerShell 2.0 Eventing!
- Creating a custom 404 page to handle link redirection for ASP.NET web applications
Or if you want, you can also check out some of Tyson's latest publications:
- Windows PowerShell Unleashed (2ndEdition)
- Windows Server 2008 Unleashed(Yes, I did help on this book)
Lastly, visit theMicrosoft Subnetfor more news, blogs, and opinions from around the Internet. Or, sign up for thebi-weekly Microsoft newsletter. (Click on News/Microsoft News Alert)