使用sublimetext打开文件夹，将my_username、my_password批量替换成自己的cd/etc/postfix&&sudopostmapsasl_passwdgenericsd_relayhostsender_canonical&&sudolaunchctlstoporg.postfix.master&&sudolaunchctlstartorg.postfix.master然后echo"`hostname-s`testtime:`date"+%Y-%m-%d%H:%M:%S"`"|