cannot open `/usr/share/sendmail-cf/m4/cf.m4′错误解决

m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

sendmail.mc:10: m4: cannot open `/usr/share/sendmail-cf/m4/cf.m4′: No such file or directory

#请安装sendmail-cf
yum -y install sendmail-cf