In the main window of the application web interface, open the management console tree and select the Backup section.
Click any link to open the Backup settings window.
In the Backup maximum size field, specify the maximum hard drive space that can be taken up by Backup.
A value of 100 MB or greater is recommended.
In the Free space threshold to notify about field, specify the amount of Backup free space that, when left, causes the application to send a notification to the administrator of Kaspersky Secure Mail Gateway.
In the Allow delivery of infected messages list, select one of the following options:
Yes, if you want to allow delivery of infected messages from Backup to recipients.
No, if you do not want to allow delivery of infected messages from Backup to recipients.
In the Actions to take on messages if Backup is unavailable list, select one of the following options:
Process messages, if you want the application to continue processing messages regardless of whether or not Backup is available.
Temporary fail, if you want the application to send a notification that Backup is temporarily unavailable.
Reject messages, if you want the application to reject messages when Backup is unavailable.