CentOS 7,使用宝塔界面。服务器安全组开放了25端口(用于邮件服务),同时在宝塔界面也将25端口开放。但是使用命令telnet ... 25的时候发现提示Connection refused,但是使用命令telnet 127.0.0.1 25之后发现成功访问postfix。不知道是什么问题?
这是命令行的片段:
[root@njwza ~]# sudo systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sun 2024-06-16 16:09:57 CST; 2h 19min ago
Process: 9761 ExecStart=/usr/sbin/postfix start (code=exited, status=1/FAILURE)
Process: 9758 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
Process: 9755 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)
Main PID: 1859 (code=killed, signal=TERM)
Jun 16 16:09:54 njwza.cn systemd[1]: Starting Postfix Mail Transport Agent...
Jun 16 16:09:54 njwza.cn postfix/postfix-script[9835]: starting the Postfix mail system
Jun 16 16:09:54 njwza.cn postfix/master[9837]: fatal: open lock file /var/lib/postfix/master.lock: unable to set exclusiv...ilable
Jun 16 16:09:55 njwza.cn postfix/master[9836]: fatal: daemon initialization failure
Jun 16 16:09:56 njwza.cn postfix/postfix-script[9864]: fatal: mail system startup failed
Jun 16 16:09:57 njwza.cn systemd[1]: postfix.service: control process exited, code=exited status=1
Jun 16 16:09:57 njwza.cn systemd[1]: Failed to start Postfix Mail Transport Agent.
Jun 16 16:09:57 njwza.cn systemd[1]: Unit postfix.service entered failed state.
Jun 16 16:09:57 njwza.cn systemd[1]: postfix.service failed.
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