I need urgently to purge as much as I can from the Exchange DB because the DB is close to the 75Gb limit. The retention period is set to the default 30 days. Could I bring this down to 15 and force Exchange to purge immediately whatever could be deleted ?
Any other way to free quickly some space without dismounting the store ?
We've asked users to archive as much as they can and empty their Deleted Items folder in the mean time.