Storage Limits

Individuals in your organization may need more storage space on their Exchange servers than the threshold for the mailbox store allows. You can set storage limits for individual users in the Storage Limits dialog box. Users can be warned as they approach the limit, subsequently denied the ability to send, and then denied the ability to send and receive mail.

Also, you can override the setting for deleted item retention that is set on the mailbox store. When a user deletes an item, it appears deleted to the user. However, a copy is kept in the user's mailbox store for a specified time, allowing the item to be recovered if it was unintentionally deleted. Some users in your organization may need extra recovery protection, and you can override the setting in the Storage Limits dialog box. If you choose to override the limit set on the mailbox store, you will also have the choice to not permanently delete an item until the store is backed up, adding even greater recovery opportunities for that user.