Re-Enable ctrl+enter warning in Microsoft Outlook 2003

Are you 100% sure you saw that dialog box in Outlook 2003? I have never seen and therefore never disabled such a dialog box on my Outlook 2003.

As far as I know this feature is only available from Outlook 2007 onwards.

In:

HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences

delete CtrlEnterSends and restart Outlook. This will cause the dialog to display when Outlook is restarted.