You cannot use an IMAP client to limit the file size of the e-mail messages that you want to download in Outlook 2003 (905872)

RESOLUTION

To resolve this problem, apply the hotfix that is described in this article.

After you apply this hotfix, you can configure a registry setting to specify the file size limit of the messages that you want to download. If an e-mail message exceeds the limit that you specify, only the message header will be downloaded to the computer. Additionally, you will receive the following message: A message of size nnn was not downloaded. The message is too big.If you mark the e-mail message for downloading, the message will be downloaded to the computer.

How to obtain the hotfix

This issue is fixed in the Hotfix Package . For more information, click the following article number to view the article in the Microsoft Knowledge Base:

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.To enable this hotfix, follow these steps:

1. Quit Outlook 2003.
2. Click Start, click Run, type regedit in the Open box, and then click OK.
3. Locate and then click to select the following registry key:

   HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\Options\Mail

4. After you select the key that is specified in step 3, point to New on the Edit menu, and then click DWORD Value.
5. Type IMAPMessageDownloadSizeLimit, and then press ENTER.
6. Right-click IMAPMessageDownloadSizeLimit, and then click Modify.
7. In the Value data box, type 100, and then click OK.
   
   Note When you set the value to 100, you specify that messages that are larger than 100 bytes will not be downloaded. The DWORD value of 100 decimal represents 100 bytes. 0x100 in hexadecimal equals 256 bytes. You can adjust this value to limit the size of the e-mail messages that you want to download. To do this, change the value in the Value data box.
8. On the File menu, click Exit to quit Registry Editor.