Canvas connects to our outlook e-mail accounts, but when I respond to students some of my messages bounce back as deliverable. The system says it must first be a "confirmed communication" and the page it sends me to is not helpful. There is nothing there about specifically why this is bouncing back--just about general notifications and settings.
I can mail other students with no difficulty--it only happens with some of them.
I would like to be able to respond to all of my students.