HCM Communicate Email Sender Profile without DKIM

Summary:

Customer wants to use a new Email Domain to identify all the emails that comes from Communicate Module without changing the default email domain already customized.

Content (please ensure you mask any confidential information):

Customer already setup a custom default email domain for HCM pod and does not want to change the default one.

But for the Communicate Module wants to use a new email domain that can identify easily all the email sent from Communicate Campaigns.

Is it possible to do that? 

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

25A