Redwood -HR Helpdesk - Prevent an External Contact from creating a request

Summary:

Hi

Is it possible to prevent external contacts from creating a request when they email the mailbox where requests are created from.

Content (required):

For example: Employee A sends an email from an external email address to the HR@xxxxx.com mailbox which in turn creates a heldesk request.

Is there a profile option to ensure that the request is not created. Employee A's external email address is not on the system.

Currently a request is raised when anyone emails the mailbox which creates requests.

Version (include the version you are using, if applicable):

23C

Code Snippet (add any code snippets that support your topic, if applicable):