In this example, Sendmail will process the mail queue every 30 minutes.
在这个示例中，Sendmail每30分钟处理一次邮件队列。
The –q flag specifies the interval at which the Sendmail daemon processes saved messages in the mail queue.
–q 标志指定 Sendmail 守护进程在邮件队列中保存邮件的时间间隔。
We weren't sure whether a model in which you managed your selections by means of a queue and got a movie in the mail a few days later would catch on.
我们不确定是否这样做有效：你的所选在排队了几天以后通过邮件得到了这部电影。
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