# yum -y install sendmail-cf # vi /etc/mail/sendmail.mc --------------------------------------------------------- DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl ↓ dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl --------------------------------------------------------- # m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf # vim /etc/mail/access ------------------------------------------ Connect:127.0.0.1 RELAY ------------------------------------------ # makemap hash /etc/mail/access.db < /etc/mail/access