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When sending a reply or forwarding an email message, Microsoft Outlook 2010 and Microsoft Outlook 2013 may receive a Non-Delivery Report (NDR) in a Microsoft Exchange Server 2003 or Microsoft Exchange Server 2007 organization. The NDR messages are similar to the following:

Your message did not reach some or all of the intended recipients.
      Subject:    RE:
      Sent: 2/11/2010 1:00 AM
The following recipient(s) cannot be reached:
      ************* on 2/11/2010 1:00 AM
      The message reached the recipient's e-mail system, but delivery was refused.
      Attempt to resend the message.  If it still fails, contact your system administrator.
      <******************* #5.2.1>

Or, the body of the message may contain the following text:

            The message could not be sent. Try sending the message again later, or contact your network administrator.


Other outgoing email messages may remain in the Outbox folder and not be sent. In the Sync Issues folder, the following error may be logged:


In addition, on the Exchange Server corresponding error events are logged in the Application Event log. In this case, the call to create a named property or the replica identifier is unsuccessful, and one or both of the following event ID messages are logged in Windows Event Viewer:

Event ID: 9667
Type: Error
Category: General
Source: msgidNamedPropsQuotaError
Description: Failed to create a new named property for database "%1" because
the number of named properties reached the quota limit (%2).%nUser attempting
to create the named property: %3%nNamed property GUID: %4%nNamed property
name/id: %5%n%n%n

Event ID: 9669
Type: Error
Category: General
Source: msgidReplidsQuotaError
Description: Failed to create a new replica identifier for database "%1"
because the number of replica identifiers reached the quota limit (%2).
%nUser attempting to create the replica identifier: %3%n%n%n


Outlook 2010 and Outlook 2013 introduce new named properties. When used, these may be added to the named properties table of the Exchange Server database. Each Exchange database's named properties table has a limit and a new message with additional named properties has caused the quota to be exceeded.


To address this issue, first make sure that your Exchange 2003 or 2007 server has the lastest Service Pack and/or Update Rollup installed. For Exchange Server 2007, Service Pack 2, Update Rollup 8 for Service Pack 1, or later should be installed. These introduced changes to how named properties are handled in Exchange 2007.

Second, make sure that the latest hotfix packages for Outlook 2010 and Outlook 2013 are installed. For more information about the latest applicable updates, click the following article number to view the article in the Microsoft Knowledge Base:

2625547How to install the latest applicable updates for Microsoft Outlook (US English only)

If the above steps do not resolve the issue, then proceed with the following:

  1. Use Performance Monitor to see the total number of entries in the named properties table. To do this, use the information in the following TechNet article:

    Events 9666, 9667, 9668, and 9669 Received When Named Properties or Replica Identifiers Are Depleted for An Exchange Database

  2. If the total number of number of entries is above the default value of 8192, increase the NonMAPI Named Props Quota using the steps outlined in the following TechNet article. Some Exchange administrators that have experienced this issue have resolved the issue by increasing the limit by 1000 from the default of 8192.

    How to Configure Named Properties and Replica Identifier Quotas for Exchange 2007 Databases

    Note The above article also applies to Exchange Server 2003.


As a temporary workaround, you can remove any additional mailboxes or shared mailboxes from Outlook. 

More Information

Named properties can be added by other clients also. These are not exclusive to Microsoft Outlook clients. To learn more about Named Properties, please see the following TechNet article:

Understanding the Impact of Named Property and Replica Identifier Limits on Exchange Databases

If you are unable to determine the root cause, and if the number of named properties and replica identifiers created on your servers continue to rise, contact Microsoft Customer Service and Support. For information about how to contact support, visit Microsoft Help and Support.

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