Update 2018
Starting with Adaxes 2018.1you can use built-in reports Custom storage quotas and Default storage quotas. By default, the reports are located in container Reports\All Reports\Exchange\Quotas, Limits and Restrictions.
Original
Hello Ingemar,
As to mailbox size, you will not be able to display it in the report as mailbox size is not stored in any AD object property. It is a value that is calculated and returned by Exchange 'on the fly'.
As to Mailbox quotas, you can configure the following AD properties to be displayed in reports:
- ms-Exch-MDB-Storage-Quota - Issue Warning Quota,
- ms-Exch-MDB-Over-Quota-Limit - Prohibit Send Quota,
- ms-Exch-MDB-Over-Hard-Quota-Limit Prohibit Send and Receive Quota.
Here's a tutorial on how to accomplish that: Configure Columns in Active Directory Object Lists.