==== 必填信息。没有填写将不予回复 ====
- iRedMail 版本号：0.9.2
- 使用哪个数据库存储用户帐号（OpenLDAP，MySQL，PostgreSQL）：MySql
- 使用的 Linux/BSD 发行版名称及版本号：CentOS Linux release 7.1.1503 (Core)
- 与您的问题相关的日志信息：
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Aug 26 14:08:41 mail postfix/smtp[5154]: connect to 127.0.0.1[127.0.0.1]:10024: Connection refused
Aug 26 14:08:41 mail postfix/smtp[5154]: A43475BB3: to=<rovecat@gmail.com>, relay=none, delay=2354, delays=2354/0.01/0/0, dsn=4.4.1, status=deferred (connect to 127.0.0.1[127.0.0.1]:10024: Connection refused)

检查了一下应该是 amavisd 服务没有启动, 不过无法手动启动, 服务状态信息:
Aug 26 13:28:47 mail.apcube.com systemd[1]: amavisd.service: main process exited, code=exited, status=255/n/a
Aug 26 13:28:47 mail.apcube.com systemd[1]: Unit amavisd.service entered failed state.
Aug 26 13:28:47 mail.apcube.com systemd[1]: amavisd.service holdoff time over, scheduling restart.
Aug 26 13:28:47 mail.apcube.com systemd[1]: Stopping Amavisd-new is an interface between MTA and content checkers....
Aug 26 13:28:47 mail.apcube.com systemd[1]: Starting Amavisd-new is an interface between MTA and content checkers....
Aug 26 13:28:47 mail.apcube.com systemd[1]: amavisd.service start request repeated too quickly, refusing to start.
Aug 26 13:28:47 mail.apcube.com systemd[1]: Failed to start Amavisd-new is an interface between MTA and content checkers..
Aug 26 13:28:47 mail.apcube.com systemd[1]: Unit amavisd.service entered failed state.

安装完成的时候是都正常的, 只是今天中午突然发现 amavisd 占用 CPU 95%左右, 然后网上找不到解决办法, 然后我就重启了 amavisd 服务, 结果就不能收发邮件, 重启 VPS 也没办法解决, 因此请张工帮忙看看是什么问题.

谢谢.