Applies to: Exchange Server 2007
Topic Last Modified: 2007-06-12

Use the Storage Quotas dialog box to configure a variety of storage quota restrictions and deleted item retention settings for the mailbox user.

Storage quotas

• Select the Use mailbox database defaults check box to use the storage quotas that are configured for the mailbox database that contains this mailbox. Clear this check box to create storage quotas that are specific to this mailbox user.
  
  
• The following check boxes are available only when the Use mailbox database defaults check box is cleared:
  
  
  • Issue warning at (KB)   Select this check box and use the corresponding text box to specify the maximum storage limit in kilobytes (KB) before a warning is issued to the mailbox user. The value range is from 0 through 2,147,483,647 KB. If the mailbox size reaches or exceeds the value specified, Exchange will send a warning message to the mailbox user.
    
    
  • Prohibit send at (KB)   Select this check box and use the corresponding text box to specify a prohibit send limit in KB for the mailbox. The value range is from 0 through 2,147,483,647 KB. If the mailbox size reaches or exceeds the specified limit, Exchange will prevent the mailbox user from sending new messages and will display a descriptive error message.
    
    
  • Prohibit send and receive at (KB)   Select this check box and use the corresponding text box to specify a prohibit send and receive limit in KB for the mailbox. The value range is from 0 through 2,147,483,647 KB. If the mailbox size reaches or exceeds the specified limit, Exchange will prevent the mailbox user from sending new messages and will not deliver any new messages to the mailbox. Any messages that are sent to the mailbox will be returned to the sender with a descriptive error message.
    
    

  Note:
  Microsoft Exchange Server 2007 allows administrators to customize the warning and error messages for mailboxes that exceed the specified storage quotas. To learn more about customizing quota messages, see How to Manage Quota Messages.

Deleted item retention

• Select the Use mailbox database defaults check box to use the deleted item retention settings that are configured for the mailbox database that contains this mailbox. Clear this check box to create deleted item retention settings that are specific to this mailbox user.
  
  
• The following check boxes are available only when the Use mailbox database defaults check box is cleared:
  
  
  • Keep deleted items for (days)   Use this box to specify the number of days that Exchange will retain the deleted items for this mailbox. During this retention period, users can recover their deleted items on their own. If an item that was deleted beyond the interval needs to be recovered, the administrator must restore the mailbox database from backup.
    
    
  • Do not permanently delete items until you back up the database   Select this check box to prevent Exchange from permanently deleting the items until the mailbox database is backed up. This ensures that the deleted items can be recovered from backup if necessary.
    
    
• For more information about deleted item retention, see Configuring Deleted Mailbox and Deleted Item Retention.
  
  

To ensure that you are reading the most up-to-date information and to find additional Exchange Server 2007 documentation, visit the Exchange Server TechCenter.

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