You do not have to modify majordomo.cf file, unless you want to change the
default behavior of all your lists, for which you have not explicitly
set the non_member_bounce attribute. Here is the excerpt from the patch:
# Majordomo owner can change the default policy in majordomo.cf file, e.g:
# -----------------------------
# $config'default_non_member_bounce = "sender";
You CAN change the default policy, like the example above, but you don't
have to. To change or reverse what you have unwittingly done, you should
change or remove the line in your majordomo.cf file.
Regards,
Joe