(1) First create
a file named "moderators."
It should contain the fully qualified mail addresses of all the
moderators for this list (i.e. just
local user names are not sufficient, at least include an @host or
host! ).
(2) Then uncomment
the appropriate "moderated_flag" line in rc.custom.
From then on
all mail that does not contain an "Approved: the_address_of_one_of_the_moderators"
field is forwarded to all the moderators.
One of the moderators
should then re-send the mail to the list after adding an "Approved:
his_own_address" field to the header (and possibly editing
the contents of the mail). It will be no problem if several moderators
resubmit the same submission concurrently, since the mailinglist
will filter out duplicates anyway (i.e. only the first one will
go out and be archived).