Missing or wrong reply-to headers in this mailing list

Hi all, I've been around this list for a month or something but i just discovered today that all my replies weren't sent to the list but instead to the individual who sent the message. I haven't administered any list systems before but at Apache for example it appends a reply-to header pointing to the mailing list posting addresss (php-general@lists.php.net, in our case). You hit reply and type the message. I think it rather confusing as we have to add php-general@lists.php.net in CC or TO fields and it results in duplicate messages. Can the list administators can fix this? (appending the correct reply-to header) And please anybody who got my messages foreward it to the list just to share ideas. Thanks for your help. -ahmed