In the Web-base Administration of SLmail, select the Domains page. Using the list box on the page, select the targeted domain and then click the Edit button. The Domains Edit Page will open.
Select the Quota Status in the list box and then enter the values of the Disk and Grace Quotas. Click the Save button to accept and apply the changes.
From the Control Panel Applet, select the Domains tab. In the list box at the top of the window, select the targeted secondary domain, and then click the Edit Domain button on the tool bar. The Domain Edit dialog box will open.
Control Panel Applet Domain Edit dialog box
Click the Domain Quota button and the Mailbox Quotas dialog box will open.
Control Panel Applet Mailbox Quota dialog box
Select the Quota State in the list box and then enter the Disk and Grace Quotas in the text boxes provided. Click OK to accept the changes to the quotas and then click the Apply button on the Control Panel Applet to apply the change for the domain.