ServiceDesk Plus has a feature named "Process messages from new email ID" that is primarily used to prevent unauthorized or unknown email addresses from automatically creating tickets in the application.
When this option is disabled, ServiceDesk Plus will only process emails from existing users already available in the application. Emails from unknown senders are ignored instead of generating new requests.
One simple use case for this feature is to help organizations improve security, prevent spam and unauthorized ticket creation and maintain controlled user management by allowing only existing users to create requests through email.
However, in certain scenarios, it is crucial to notify senders when their email is prevented from being processed into a ticket in the application. To address this, a database entry has been added that allows you to enable or disable this notification.
By default, this notification is disabled in the application. To enable it, execute the following update query in the database and restart the application for the change to take effect.
update mailconfig set paramvalue = 'true' where parameter = 'NOTIFY_NEW_USER_ON_MAIL_REJECTION';