Hi Nishant,
Try this : You can disable Ribbon interface items in Office applications via Group Policy. There may be keyboard shortcuts or other ways around it, but this will make it more difficult for your users to attempt to recall messages. The specific settings you need are going to be under `User Configuration | Administrative Templates | Microsoft Outlook 2010 | Disable Items in User Interface | Custom | Disable command bar buttons and menu items`. The Control ID for the Recall Message button is 2511 (Control Name: RecallThisMessage).