Agreed. We had complaints about the lack of receiving emails because "They didn't know if it actually sent".
At a conference, they had shown us how to change this behavior. I have an mp3 of the training but I haven't gone through the 6+ hours at this point...
We had changed the behavior to send everyone in the group the email, even if they were the sender.
Of course, they now want this setting reversed... I can tell you the date it happened on, but I am not seeing what I would expect in the audit logs. Honestly, I'm not sure this is an admin panel setting, a Google Groups setting, or what... It's been 6 months...
I would warn others of getting old... my memory is not as great as it used to be.