如果您期望的是特定的输入值、数字、字母、电子邮件地址等诸如此类的内容，那么就只允许这种类型的数据，并拒绝任何其他东西。
If you are looking for specific input values, Numbers, letters, E-mail addresses, and the like, then only allow this type of data and refuse anything else.
通常一旦电子邮件地址被服务器拒绝了，就无法手工输入服务器名或者IP地址重新获得服务。
But if your E-mail address stumps it, there is no way to enter a server name or IP address manually.
通常一旦电子邮件地址被服务器拒绝了，就无法手工输入服务器名或者IP地址重新获得服务。
But if your E-mail address stumps it, there is no way to enter a server name or IP address manually.
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