Knowledge Base

How to disable mailbox size limit warning messages on a computer that is running Exchange Server 2003 or Exchange 2000 Server

Article ID: 824312

Article Last Modified on 10/25/2007

APPLIES TO

Microsoft Exchange Server 2003 Enterprise Edition
Microsoft Exchange Server 2003 Standard Edition
Microsoft Exchange 2000 Server Standard Edition
Microsoft Exchange 2000 Enterprise Server

Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry

INTRODUCTION

When a Microsoft Exchange Server 2003 mailbox or a Microsoft Exchange 2000 Server mailbox reaches its size limit, a message that resembles the following may be sent to the mailbox from the Exchange system administrator account:

You may not be able to send or receive new mail until you reduce your mailbox size. To make more space available, delete any items that you are no longer using or move them to your personal folder file (.pst). Items in all of your mailbox folders including the Deleted Items and Sent Items folders count against your size limit. You must empty the Deleted Items folder after deleting items or the space will not be freed.

See client Help for more information.

Microsoft has released a software update that includes a new feature that lets you change the default behavior so that mailbox warning messages are not sent from the Exchange system administrator account. By default, warning messages are sent from the Exchange system administrator account to warn the user that the mailbox has surpassed the warning size limit or the size limit. The mailbox size limit is specified on the Exchange General tab for a mailbox-enabled user in the Active Directory Users and Computers snap-in.

MORE INFORMATION

Exchange Server 2003

To enable this feature, you must install the latest service pack for Exchange Server 2003. This feature was introduced in Microsoft Exchange Server 2003 Service Pack 1 (SP1). After you install the latest service pack, you must perform the steps that are described in the "After you install the software update" section later in this article. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Exchange 2000 Server

Software update information

A supported feature that modifies the product's default behavior is now available from Microsoft, but it is only intended to modify the behavior that this article describes. Apply it only to systems that specifically require it. This feature may receive additional testing. Therefore, if the system is not severely affected by the lack of this feature, we recommend that you wait for the next Microsoft Exchange 2000 Server service pack that contains this feature.

To obtain this feature immediately, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites

Because of file dependencies, this software update requires Microsoft Exchange 2000 Server Service Pack 3 (SP3). For more information, click the following article number to view the article in the Microsoft Knowledge Base:

301378 How to obtain the latest Exchange 2000 Server service pack

File information

The English version of this software update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Date         Time   Version            Size    File name
--------------------------------------------------------------
20-Jul-2003  23:55  6.0.6488.0      3,915,776  Cdoex.dll        
20-Jul-2003  23:51  6.0.6488.0        851,968  Davex.dll        
20-Jul-2003  23:51  6.0.6488.0         53,248  Davexpc.dll      
20-Jul-2003  23:47  6.0.6488.0        577,536  Dsaccess.dll     
18-Jul-2003  00:11  6.0.6488.0        184,320  Dscmsg.dll       
18-Jul-2003  00:11  6.0.6488.0        958,464  Emsmdb32.dll     
20-Jul-2003  23:55  6.0.6488.0      3,575,808  Excdo.dll        
20-Jul-2003  23:47  6.0.6488.0        258,048  Exmime.dll       
20-Jul-2003  23:51  6.0.6488.0        143,360  Exodbesh.dll     
20-Jul-2003  23:51  6.0.6488.0         57,344  Exodbpc.dll      
20-Jul-2003  23:51  6.0.6488.0        200,704  Exodbprx.dll     
20-Jul-2003  23:51  6.0.6488.0      2,174,976  Exoledb.dll      
20-Jul-2003  23:45  6.0.6488.0         81,920  Exosal.dll       
20-Jul-2003  23:51  6.0.6488.0        307,200  Exprox.dll       
18-Jul-2003  00:13  6.0.6488.0        143,360  Exschema.exe     
18-Jul-2003  00:15  6.0.6488.0        675,840  Exwform.dll      
17-Jul-2003  23:52  6.0.6488.0         49,152  Mdbevent.dll     
18-Jul-2003  00:08  6.0.6488.0      2,285,568  Mdbmsg.dll       
17-Jul-2003  23:53  6.0.6488.0         32,768  Mdbrole.dll      
20-Jul-2003  23:47  6.0.6488.0         24,576  Mdbtask.dll      
20-Jul-2003  23:46  6.0.6488.0      4,657,152  Store.exe

After you install the software update

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
Note The steps that are described in this section apply to both Exchange Server 2003 and to Exchange 2000 Server. If you are using Exchange Server 2003, you must install Exchange Server 2003 SP1 before you follow these steps.

After you install this software update, you must create the Disable Quota Messages registry entry for each mailbox store on the Exchange Server 2003 computer or on the Exchange 2000 Server computer. You do this so that mailbox warning messages are not sent from the Exchange system administrator account. When you create the Disable Quota Messages registry entry for a mailbox store, the warning message is not sent to the mailboxes in that mailbox store. If you do not want warning messages to be sent to more than one mailbox store, you must add the Disable Quota Messages registry entry to each registry subkey that represents a mailbox store.

For example, if you have two mailbox stores on your Exchange 2000 Server computer, you must create the Disable Quota Messages registry entry in the Private-<First Mailbox Store GUID> subkey. Then, you must also create the Disable Quota Messages registry entry in the Private-<Second Mailbox Store GUID> subkey.

To create the Disable Quota Messages registry entry, follow these steps:

Click Start, click Run, type regedit, and then click OK.
Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\<Exchange Server Name>\Private-<Mailbox Store GUID>

Note You must create the Disable Quota Messages registry entry in each registry subkey that represents a mailbox store that you do not want to send mailbox warning messages to.
On the Edit menu, point to New, click DWORD Value, type Disable Quota Messages, and then click the Disable Quota Messages registry entry.
Right-click the Disable Quota Messages registry entry, and then click Modify.
In the Value Data area, type 1, and then click OK.

Note When you disable this warning message functionality, you can write a program that monitors the mailbox table and that compares the mailbox size to the mailbox size limit. The program can then send a custom message to a mailbox when the mailbox reaches a specific size.

Keywords: kbexchange2003sp1fix kbhotfixserver kbregistry kbqfe kbfix kbexchange2000presp4fix kbbug KB824312

Microsoft KB Archive/824312

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