Friends are reporting that some emails to me are bouncing back to them. What might be wrong?
Friends are reporting that some emails to me are bouncing back. It is multiple folks with different email systems. I do still receive most emails (I think!) and there does not seem to be anything unique about the ones bouncing back to distinguish them from the ones that come through. They are not large, they don't have big attachments. What could be wrong?
MacBookPro, Mac OS X (10.4.10)