Question:

How do I obtain a report displaying the size of all \Deleted items folders against the total size of our mailboxes?

Answer:

The report template you should use is called Mailbox Specific Content Estimation and you will find it on the Templates > Mailbox Content  menu.
You will apply the following settings:

• Selection tab: All organization mailboxes;
• Group tab: Level 1: No grouping (Organization); select the Total check box;
• Folders tab: Select folders, (use the Select from a mailbox option in the drop-down list to select a custom from your mailbox if needed). PROMODAG Reports will look for these folders in all organization mailboxes;
• Filter tab: Unused;
• Content tab: Group by , Mailbox limit status;  Mailbox limit status: Below limit, Above limit, Undefined;
• Presentation tab: Size in KB, MegaBytes.
• Output tab: Your own choice (Screen, Printer, Disk file, Email recipient, Exchange folder, Sharepoint).

This will give you a report with 6 columns:

•    Mailbox size:                                                  size of the mailbox
•    Items size:                                                      size of items found in the selected folders 
•    Mailbox size less items size:                    self-explanatory
•    MB storage warning:                                   self-explanatory
•    MB limit status:                                             self-explanatory
•    Alternative limit status:                               What the MB limit status would be without the items found in the selected folders