it'd be very cool if I could, say right-click on that 'invalid e-mail addresses' warning line up there & have a "remove invalid addresses" option. #MSOutlook
@EileenKCarpenter Makes sense. I think there are controls you can apply at the distribution-list level, but a generic disallow-reply-all option would be pretty cool.
(Mind you it may already be there & I just haven't paid enough attention)