11.3.2 Disabling Email Notifications
Events may continue to occur even though you have chosen not to notify anyone.
Email notifications are enabled by default, and perform correctly provided that you entered valid SMTP server and email addresses during installation (or when editing NotifyCA.txt after installation).
To disable SMTP email notifications from the Web interface, set the Email Notification to "off" using the drop-down list on the Email Settings page, and then click "Apply Changes".
To disable SMTP email notification from the command line, enter the following command:
desta smtp offSee Section 3.10.2 "SMTP Notification" for more information.