注意：使功能失效要在删除所有索引之前进行，如果需要可以取消用户帐户权限，这样就不会导致用户的错误。

Note: Disabling the feature should be done before dropping all indexes and if desired, revoking permissions of the user account, so that no user errors will result.

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相反，我们依靠电子邮件帐户提供商或域服务器提供的错误报告来检验用户提供的电子邮件地址。

Rather, we rely on an error report from the email account provider or the domain server to validate the email addresses provided by our users.

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数据库必须分别跟踪两个转帐；否则，资金可能进入错误的帐户，而银行可能得多两个愤怒的(前)客户。

The database must track both transfers separately; otherwise, the funds could go into the wrong accounts, and the bank might be left with two angry (ex) customers.

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