ESC_ROUTING_LOOP_DETECTED
{ ESC_ROUTING_LOOP_DETECTED, "Routing loop detected" },
envelope_set_esc_code(&evp, ESC_ROUTING_LOOP_DETECTED);
esc_code(ESC_STATUS_PERMFAIL, ESC_ROUTING_LOOP_DETECTED),
esc_description(ESC_ROUTING_LOOP_DETECTED));