Topic Last Modified: 2005-11-18

The Microsoft® Exchange Server Analyzer Tool reads the following registry entry to determine if the default limit for attachments in a message has been changed:


If the Exchange Server Analyzer finds the LimitBodyParts registry entry present and configured, a non-default configuration message is displayed.

By design and for security reasons, Exchange Server limits the number of attachments (referred to as body parts) to 250. If a message contains more than 250 attachments, a MAPI_E_TOO_BIG error is generated. In addition, the Microsoft Exchange Information Store service may consume excessive memory and CPU resources while processing messages with a large number of attachments.

A configuration opportunity exists that allows administrators to add the LimitBodyParts registry value and configure it to use a value higher than 250. In the absence of this entry, the default value of 250 is used.

This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore the registry if a problem occurs. For information about how to restore the registry, view the "Restore the Registry" Help topic in Regedit.exe or Regedt32.exe.

To view or change the LimitBodyParts registry value

  1. Open a registry editor, such as Regedit.exe or Regedt32.exe.

  2. Navigate to:


  3. Examine and, if desired, change the LimitBodyParts value. An acceptable value for this registry value is any whole number between 250 and 4294967295.

  4. If a change is made, restart the Exchange Server computer for the change to take effect.

Before you edit the registry, and for information about how to edit the registry, see the Microsoft Knowledge Base article 256986, "Description of the Microsoft Windows Registry" (