The fix for this problem is included in the following:
- Microsoft Exchange Server 2003
- Microsoft Exchange 2000 Server Service Pack 4 (SP4)
To enable the fix, you must add the
Reread Logon Quotas Interval value to the registry.
To add the
Reread Logon Quotas Interval value, follow these steps:
- Click Start, click Run, type regedit, and then click OK.
- Locate and then click to select the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
- After you select the key that is specified in step 2, point to New on the Edit menu, and then click DWORD Value.
- Type Reread Logon Quotas Interval, and then press ENTER.
- Right-click Reread Logon Quotas Interval, and then click Modify.
- In the Value data box, type the reread logon quotas interval in seconds, and then click OK.
Note The
default value is two hours (7200). The recommended value is 20 minutes (1200). - On the File menu, click Exit to exit Registry Editor.
Because the
Reread Logon Quotas Interval value depends on the DSAccess cache and the mailbox information
cache, the exact time before the changes take effect also depends on the
DSAccess cache refresh time and the mailbox information cache refresh time. The
default caching mechanism of DSAccess is 10 minutes. The default caching
mechanism for the mailbox information cache is two hours.
You can
edit the registry to change the DSAccess cache and the mailbox information
cache refresh time to less time. However, this change affects performance
because DSAccess performs more Active Directory lookups.
To control
the DSAccess cache, change the
CacheTTLUser registry value:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeDSAccess\Instance0
Value name:
CacheTTLUser Data type:
REG_DWORD Radix:
Decimal Value data: The cache expiry time for the user data objects in the cache (in seconds). The default value is 5 minutes for the DSAccess cache to be refreshed.
To control rereading the logon quotas in
the mailbox information cache, change the
Mailbox Cache Age Limit value:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
Value name:
Mailbox Cache Age Limit Data type:
REG_DWORD Radix:
Decimal Value data: The mailbox information cache age limit in
minutes. The default value is two hours.
You must restart the
information store after you make any of these registry changes. Also, if you
set the time-out values to very low values, you may affect the performance of
the server.