The view you have selected contains more than 5000 items and exceeds the maximum amount of items SharePoint allows you to view at once - this is also known as the list view threshold.
To view items try selecting another view or creating a new view. You can select other views in MacroView DMF and MacroView Message by:
- Outlook: Click the Home ribbon > Find the MacroView group > Click the View dropdown menu
- DMF Explorer: Click the View ribbon > Find the Views group
If you do not have sufficient permissions to create views for this list, ask your administrator to modify the view so that it conforms to the list view threshold.
To learn more, visit Manage large lists and libraries in SharePoint on the Microsoft support site.