+extern val mailman_node_to_node : mailman_node -> node;
+
+extern type mailman_place;
+extern val mailman_place_default : mailman_node -> mailman_place;
+extern val mailman_place : mailman_node -> your_ip -> mailman_place;
+extern val mailman_place_to_web_node : mailman_place -> web_node;
+extern val mailman_place_to_node : mailman_place -> node;
+extern val mailman_place_to_ip : mailman_place -> ip;
+{{Analogous to <tt>web_place</tt>, but based on <tt>mailman_node</tt>s}}