Since named lists of different types live in separate namespaces, we
have to duplicate. This is a little annoying.
localpartlist dom_users = ${expand:KV(users, {$value}{*})}
localpartlist dom_locals = ${expand:KV(locals, {$value}{+user_extaddr})}
localpartlist user_extaddr = ^CONF_user_extaddr_regexp
+addresslist user_extaddr = ^CONF_user_extaddr_regexp
DIVERT(null)
###----- That's all, folks --------------------------------------------------