You know who you are. I saw your comment (which I didn’t post) this morning, and your emails have been coming in — two arrived late last night. But my replies are evidently not being received by you.
I’ve been exchanging emails with numerous other people, all of whom have been receiving my messages without any difficulty, as far as I can tell, so my SMTP seems to be working. I don’t know what’s going wrong with my emails to you, and have no idea how it might be fixed.
You can leave more comments if you want, but as far as I know, your email messages are all reaching me. You just can’t get my replies.