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mailq
===
显示待发送的邮件队列
## 说明
**mailq命令** 用户显示待发送的邮件队列，显示的每一个条目包括邮件队列id、邮件大小、加入队列时间、邮件发送者和接受者。如果邮件最后一次尝试后还没有将邮件投递出去，则显示发送失败的原因。
### 语法
```
mailq(选项)
-v：显示详细的信息。
### 实例
[root@localhost ~]# mailq -v
/var/spool/mqueue is empty
Total requests: 0
