When you create a mailbox or a public folder, you need to set the size limit. The field to enter the size limit is accompanied by mentioning two values:
- Available mail storage
- Maximum allowed mailbox (public folder) size
Knowing these values is helpful for setting the size limit properly.
The Available mail storage is calculated by the formula:
R = D-E
where:
- R – available mail storage
- D – limit of the "Diskspace" resource
- E – sum of size limits of all existing mailboxes and public folders.
The Maximum allowed mailbox (public folder) size is defined in the subscription. When you create a mailbox or a public folder, set the size limit by selecting a value from 0 to MIN (M, R). When you modify mailbox (public folder) size limit, set a new size limit by selecting a value from 0 to MIN (M, R + S).
Where:
- M – maximum allowed mailbox size resource limit
- R – available mail storage
- S – current value of the mailbox (public folder) size limit.