Hi Mark and Stephen,
You answered abouit Bcc's long ago in this string, we're no longer looking to amend anything to do with Bcc's.
All we're trying to do is stop posts with cc's from going to the list. We know that the cc will go to the outside recipient and there's nothing to stop that because it's being sent by the member from their own client email.
Since setting to Default Processing, ALL members posts are being held for moderation. That's what happened last time. Obviously there's some setting somewhere that's telling the list to do that with that setting. We'll try to find it by doing testing like you said. Meanwhile, we're quite busy in our other endeavours and having to unblock every post (some days more than others, and not that many relatively speaking) is what we're doing.
I will get back to you once we have a breather and can do that testing. I'm hoping we can find the issue. Won't know until we try.
So good of you to help us deal with this.
Best, Cathryn