如果他们无法帮助你那么你需要建立一些延迟。\\ retries。所以如果你得到那个例外，可能需要三秒钟再试一次。我怀疑这是服务的问题，所以你不要用它来快速垃圾邮件数量。

If they can't help you then you need to build in some delays\retries. So if you get that exception wait maybe three seconds and try again. I suspect this is as issue with the service though so you don't use it to quickly spam loads of numbers.