Hello, I have just discovered a bug in Mailman 2.0beta6. When you set up a list to post replies to list, and user receives confirmation note about subsciption, the CookHandlers module trashes content of 'Reply-To' field. Accordingly to comments in this code there is wrong written condition in it.You should change it from: if not fasttrack or msg.get('reply-to'): to: if not fasttrack or not msg.get('reply-to'): or even to cleaner form: if not (fasttrack and msg.get('reply-to')): Here is diff -uNr of CookHeaders.py.orig CookHeaders.py <---------cut here --- CookHeaders.py.orig Sun Oct 8 12:53:40 2000 +++ CookHeaders.py Sun Oct 8 12:54:30 2000 @@ -79,7 +79,7 @@ # or if there is already a reply-to set. If the user has set # one we assume they have a good reason for it, and we don't # second guess them. - if not fasttrack or msg.get('reply-to'): + if not fasttrack or not msg.get('reply-to'): # Set Reply-To: header to point back to this list if mlist.reply_goes_to_list == 1: msg['Reply-To'] = mlist.GetListEmail() <---------cut here Hope this helps developing your great program! Sincerely yours, -- Jerzy Hodor PS. Yes, I have posted this bug and patch on sourceforge :-)