postfix pipe to sympa msg

policy_module(ssfn-sympa, 1.0)

require{
 type postfix_pipe_t;
 type var_spool_t;
 class file { write create rename };
 class dir { add_name open read write create remove_name };
}

allow postfix_pipe_t var_spool_t:dir { add_name open read write remove_name };
allow postfix_pipe_t var_spool_t:file { create write rename };