centos7，邮箱服务：

yum -y install mailx

vim /etc/mail.rc

rocky9,邮箱服务：

dnf -y install s-nail

vim /etc/s-nail.rc

 

邮箱配置，模板：

set from=18894431968@163.com
set smtp=smtp.163.com
set smtp-auth-user=18894431968@163.com
set smtp-auth-password=HSEIMIDYJDXOOQVC
set smtp-auth=login