启动时报错
systemctl status postfix.service
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since 五 2021-05-14 10:49:16 CST; 6min ago
Process: 109631 ExecStart=/usr/sbin/postfix start (code=exited, status=1/FAILURE)
Process: 109629 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
Process: 109610 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=75)
5月 14 10:49:14 207 aliasesdb[109610]: /usr/sbin/postconf: warning: valid_hostname: numeric hostname: 207
5月 14 10:49:14 207 aliasesdb[109610]: /usr/sbin/postconf: fatal: unable to use my own hostname
5月 14 10:49:15 207 aliasesdb[109610]: newaliases: warning: valid_hostname: numeric hostname: 207
5月 14 10:49:15 207 aliasesdb[109610]: newaliases: fatal: unable to use my own hostname
5月 14 10:49:15 207 postfix[109631]: warning: valid_hostname: numeric hostname: 207
5月 14 10:49:15 207 postfix[109631]: fatal: unable to use my own hostname
5月 14 10:49:16 207 systemd[1]: postfix.service: control process exited, code=exited status=1
5月 14 10:49:16 207 systemd[1]: Failed to start Postfix Mail Transport Agent.
5月 14 10:49:16 207 systemd[1]: Unit postfix.service entered failed state.
5月 14 10:49:16 207 systemd[1]: postfix.service failed.
改下主机的名字 不要用数字