I can receive email from the lists but cannot send. If your email address has been changed or updated, then you would need to update your address on all of the lists to which you are subscribed. If your mailing address has already been updated, then you will need to contact the system administrator of all the lists to which you are subscribed. I chose reply from my email program and I replied to the list as well as the sender. I only wanted to reply to the sender.
Different lists have different reply-to settings.
Discussion lists typically have a reply-to included in the header that will automatically have you reply to the list address. Announcement lists typically have the default set to the individual sender. Please check your reply settings in your email program if your think you are replying in a way other than how you intended. This may save you some embarrassment. I have subscribed to a list via the web but have not received any notification or confirmation.