req_str = string_append(req_str, 3, "IP: ", sender_host_address, "\r\n");
if ((s = expand_string(US"$authenticated_id")) && *s)
req_str = string_append(req_str, 3, "User: ", s, "\r\n");
req_str = string_append(req_str, 3, "IP: ", sender_host_address, "\r\n");
if ((s = expand_string(US"$authenticated_id")) && *s)
req_str = string_append(req_str, 3, "User: ", s, "\r\n");