Adding functionality to restrict 'rcpt to' domains

templates/default/relay_restrictions.erb

@@ -0,0 +1,11 @@
+#
+# This file is generated by Chef for <%= node['fqdn'] %>
+#
+# Local changes will be overwritten
+#
+# Attribute name is the domain name, Attribute value is either OK or REJECT
+
+<% node['postfix']['relay_restrictions'].each do |name, value| %>
+<%= name %> <%= value %>
+<% end unless node['postfix']['relay_restrictions'].nil? %>
+*			REJECT