postfix一个报错，分析下问题原因，在线可探讨。

Question

Answer 1

已经是过去式了，当时队列就是一个人有大量邮件。

Answer 2

mailq 查看队列情况

Answer 3

warning: mail for [10.44.82.6]:25 is using up 4001 of 4001 active queue entries

warning: you may need to increase the main.cf relay_destination_concurrency_limit from 100
warning: please avoid flushing the whole queue when you have
warning: lots of deferred mail, that is bad for performance
warning: to turn off these warnings specify: qmgr_clog_warn_time = 0

我查看了下日志，应该是发给一个人的邮件数量过大，占满活动队列，导致触发qmgr_clog_warn_time默认300s报警一次，不过有个问题,为什么队列最大长度长度会变，一会是5133 一会是4001一会7000多，求解惑