/etc/init.d/sendmail stop # sendmailを停止 chkconfig sendmail off # sendmail自動起動off # 変更 /usr/sbin/alternatives --config mta There are 2 programs which provide 'mta'. Selection Command ----------------------------------------------- *+ 1 /usr/sbin/sendmail.sendmail 2 /usr/sbin/sendmail.postfix Enter to keep the current selection[+], or type selection number: 2 chkconfig postfix on # 自動起動on /etc/init.d/postfix start # Postfix起動