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Unable to open message for delivery in Exchange queue

I have a user that sends out meeting requests frequently.  On occasion, the meeting request will get stuck in the queue.  Additional queue information states "Unable to open message for delivery".  The user is using Outlook 2007.  We are using Exchange 2003 SP2 and Server 2003 SP2.

Here are the steps I've tried:
1.  Enabled Message Tracking.  This states "message routed and queued for remote delivery"
2.  Applied hotfix KB938650 and the appropriate registry edit.
3.  Downgraded the user temporarily to Outlook 2003 to try to isolate the issue, but the issue still occured.
4.  Disabled anti virus.
5.  Tried Outlook 2007 with no updates and all updates to rule out an update causing the problem.  Same issue occurred.

Anyone have any additional troubleshooting tips or known resolutions to this problem?  Any help would be much appreciated!!!!!!
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isd721
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isd721
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1 Solution
 
energeticbala18Commented:
1)Make sure the hotfix is applied and the u have added the registry key without space
2) delete the message in the queue which say unable to open message for delivery (thats means the message might be corrupted) and if possible reboot the server and try to send the new meeting request and the modified invities

thanks
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isd721Author Commented:
1.  I have verified that the hotfix has been applied and the registry key has been added without spaces.
2.  In the past I have deleted messages in the queue that say unable to open message for delivery.  The user is typically able to recreate the meeting and it works fine.  In fact, it works fine for about a week or two, then one gets stuck in the queue again.  I haven't tried rebooting the server after deleting one from the queue, but not sure that would make a difference.  I can try that tonight.

At one point in time I thought it might be possible the client computer was somehow corrupting the message, so we reinstalled the OS...still no luck.  Nothing in event viewer indicating anything strange, unless possibly the network card is starting to fail and corrupts a packet or so and that's why some get stuck.  I'm just grasping a straws here!

I appreciate the help and will report back after a reboot this evening.
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energeticbala18Commented:
can you verify the DLL mentioned in th KB article whether it matches or not
FYI:
This issue is been noticed when recipients ( External ) for meeting updates are on
Exchange 2007 server. Messages would be queued on Exchange 2003 server with error
message Unable to open message for delivery. After you bump the logging on
Transport event 327 with description EcGetMime to the store failed. Error code :
-2147467259 would be logged as well.
If the meeting update request gets queued for even a single external recipient it
would have all recipient names listed in. This issue happens due to
PR_RECIPIENT_TRACKSTATUS_TIME property cannot be successfully converted from the
MAPI format to the MIME format at the sending side ( Exchange 2003 server ).

This issue should happen for Exchange 2007 recipients. It happens due to
PR_RECIPIENT_TRACKSTATUS_TIME property cannot be successfully converted from the
MAPI format to the MIME format at the sending side ( Exchange 2003 server ).If the
meeting update request gets queued for even a single external recipient ( Exchange
2007 ) it would have all recipient names listed in
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isd721Author Commented:
The versions for the DLLs match (6.5.7653.5) the article.  However, I do not have rtdsmcal.dll.
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energeticbala18Commented:
Then Remove the Hotfix and reapply the hotfix and reboot the server once and check whether we still face the issue ?
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SynsorITCommented:
We are having this same issue.  I tired to find the hotfix but it is not located in the KB article.  Anyone know how to get this besides calling and paying MS?
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isd721Author Commented:
It's a hotfix you need to request from Microsoft.  Go to:  http://support.microsoft.com/kb/938650 and click "View and Request hotfix downloads" in the top left corner of the page.  That should get you where you need to go.
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