HOW TO RESOLVE 9667 Events in Exchange 2003 & Exchange 2007 Servers.

The Microsoft Exchange Information Store service maintains a table of named properties for each database. By default, Exchange Server 2003 and Exchange Server 2007 have a hard quota of 16,000 named properties or replica identifiers for each MDB. Note You can use this registry value only after you apply Exchange Server 2003 Service Pack 2. The default value of the registry value is 8000.

The only way to "clear" named properties is to move to a new store. The workaround is to manually raise the name properties level.

When the default value of 8000 is crossed, the 9667 events are generated as shown below for example:

Event Type: Error

Event Source: MSExchangeIS

Event Category: General

Event ID: 9667

Date:  8/19/2009

Time:  2:27:35 PM

User:  N/A

Computer: EXCHANGE03

Description:

Failed to create a new named property for database "First Storage Group\Mailbox Store (EXCHANGE03)" because the number of named properties reached the quota limit (8192).

 User attempting to create the named property: "SYSTEM"

 Named property GUID: 00020386-0000-0000-c000-000000000046

In registry, you might find multiple store Guids as shown below. You need to make sure which one is the right mailbox store where you need to make the changes. You can compare with the ObjectGUID value using ADSIEdit.msc for that particular mailbox store.

Example is given below:

In registry, you might see these two entries:

Private-01aa91a2-9052-4bf1-8dee-2df48e4afad5

Private-6a08811e-2dc3-4919-aee6-f2ae8ec1cee4

-- The ObjectGUID 1E 81 08 6A C3 2D 19 49 AE E6 F2 AE 8E C1 CE E4 matches with the second one which is Private-6a08811e-2dc3-4919-aee6-f2ae8ec1cee4

You can also dump NamedProps of the Mailbox store by using MFCMAPI tool.

1. Open MFCMAPI and logon to a mailbox on the affected store[non-cached mode profile].

2. Click on the mailbox in the top pane. On the menu bar, click Property Pane, then click Find All Named Props.

3. Change the Upper Bound to 0x0000FFFF, to be certain to get all properties in the range.

4. On the menu bar, click Property Pane, click Modify 'Extra' Properties, then click OK.

5. The lower pane in the MFCMAPI window will now display all named properties. You can sort in accordingly.

IMP: You must complete all the steps given below in the procedure to configure the named properties. Make sure that you configure the quota for the named properties, the quota for the non-MAPI named properties, and the quota for the replica identifiers. To perform the changes, please follow the below steps:

STEP 1. Start Registry Editor, and then connect to the registry of the server where the database that you want to configure resides.

STEP 2. Locate the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Server Name>\<Database Type-GUID>

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\Server01\Private-6a08811e-2dc3-4919-aee6-f2ae8ec1cee4

STEP 3. Configure the quota for the named properties. To do this, follow these steps:

a. Right-click <Database Type-GUID>, and then select New | DWORD value.

b. Name the new DWORD value Named Props Quota.

c. Right-click Named Props Quota, and then click Modify.

d. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

STEP 4. Configure the quota for the non-MAPI named properties. To do this, follow these steps:

a. Right-click <Database Type-GUID>, and then select New | DWORD value.

b. Name the new DWORD value NonMAPI Named Props Quota.

c. Right-click NonMAPI Named Props Quota, and then click Modify.

d. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

STEP 5. Configure the quota for the replica identifiers. To do this, follow these steps:

a. Right-click <Database Type-GUID>, and then select New | DWORD value.

b. Name the new DWORD value Replids Quota.

c. Right-click Replids Quota, and then click Modify.

d. In the Value data text box, enter a positive integer between 1 and 0x7FFF, and then click OK.

STEP 6. Dismount the database for which you configured the named properties and replica identifiers quotas.

STEP 7. Remount the database.

Default Quotas:

Named Props Quota: 16K

NonMAPI Named Props Quota: 8K

Replids Quota: 8K

Microsoft article on the same:

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

http://technet.microsoft.com/en-us/library/bb851493.aspx