1. 安装sendmail
    yum install -y sendmail* mailx
  2. 修改防火墙设置,添加25端口到防火墙
    vi /etc/sysconfig/iptables
  3. 重启 iptables、sendmail 服务
    service iptables restart
    service sendmail restart
  4. 测试发邮件功能是否正常
    echo "Nagios Test Email " | mail -s "Alert" vip_star_hr@163.com
    此时163邮箱会收到一封发件人未知的邮件
    若需要设置发件人vi /etc/mail.rc, 添加如下设置:
    set from=vip_star_hr@163.com
    set smtp=smtp.163.com
    set smtp-auth-user=vip_star_hr
    set smtp-auth-password=Passwd
    set smtp-auth=login
    mail setting

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