I have a situation where a local user sends an email to an external user and CC's a Domino group comprised of additional external (i.e. firstname.lastname@example.org) users. The issue is that the user that receives the email is able to "reply to all" and send email to the external users within that group. Obviously, if the local user BBC's the group, the external recipient cannot reply to all. I'm wondering is this default design for Domino or is there a way to change this like I could with Exchange.