Strange, I just replied to this message, and answered "yes" to use Reply-to in Pine. It only went to the list. However, I have had other messages where using the reply-to address sends a message to the list, and a CC to the original sender. If I don't notice this, the message gets rejected. I don't have the slightest idea why this happens, unless it has something to do with the way the particular user has their email client configured.
