XADM: Modifying Usage Quotas for All Users

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1. From the Support\Samples\CSVs\Mailbox directory on the Microsoft Exchange Server compact disc, copy the Mailbox.csv file to the hard disk.
2. Remove the Read-only attribute on the file.
3. In the Exchange Administrator program, click Directory Export on the Tools menu. Select Mailbox.csv as the export file and the appropriate container, and then click the Export button.
4. Open the Mailbox.csv file in Microsoft Excel (or any spreadsheet).
5. In the Mailbox.csv file, find the column titled "Use IS defaults".
6. Set the value for all rows in this column to 1. NOTE: To turn off the setting and not use the information store defaults, set the value to 0.
7. Save the file and quit the spreadsheet.
8. From the Exchange Administrator program, click Directory Import on the Tools menu. Select the Mailbox.csv file as the import file and click Import. This should modify all mailboxes to use the information store default storage quotas.

1. Follow steps 1-3 in the previous procedure to export all the mailbox information to the Mailbox.csv file.
2. Open the file in a spreadsheet and set the value of the "Use IS defaults" column to 0.
3. Set the value of the "Issue warning storage limit" column to the size at which a warning should be sent. This value is in kilobytes (KB).
4. Set the value of the "Prohibit send storage limit" column to the size at which a the user will not be able to send any more mail. This value is in kilobytes (KB).
5. Save the file and quit the spreadsheet.
6. From the Exchange Administrator program, click Directory Import on the Tools menu. Select the Mailbox.csv file as the import file and click Import. This should modify all mailboxes to use the specified quotas.