If you are wanting to add a set of email addresses in CC when the email is from a specific email address or from contacts of a company there are a few ways in which this can be done.
You will have to use the Dispatch'r rule to make this happen by setting the conditions as shown below:
If you are wanting to set the CC for all with a specific domain then have it set as shown below:
If it is only for a specific requester:
Action to be set: