case study: mail magazine

Consider asymmetric case of member list (list of persons who can post) and recipient list.

Firstly, remove primary_member_maps from $member_maps. Instead, add $ml_home_dir/members-mailmag who can post to $member_maps.

member_maps	=	$ml_home_dir/members-mailmag

In this case, when a new user is subscribed, the user address is added to both $ml_home_dir/members and $ml_home_dir/recipinets. But $member_maps is defined as $ml_home_dir/members-mailmag. $ml_home_dir/members is not used. Hence, recipients is updated but the list of posters is unchanged.

Warning

Strictly speaking, this configuration is not enough safe. If somebody fakes From: address, he/she can post since fml checks only From: address.

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