I have GroupWise 2014 (Linux).
Incoming and outgoing emails pass through the Barracuda Spam Firewall.
Everything works fine.
Now I have to add the following functionality.
If the outgoing mail has in BCC address test@mydomain.com, send it through an external SMTP server.
All other emails, send so far, through Barracuda Spam Firewall.

Is such a solution can be performed in GroupWise?
Or, I have to do some server between the GroupWise and the Barracuda, which will be distributed emails?
Or the employee, while sending email from GroupWise can Mark the SMTP server through which email will be sent?