cannot open `/usr/share/sendmail-cf/m4/cf.m4

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m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
/etc/mail/sendmail.mc:10: m4: cannot open `/usr/share/sendmail-cf/m4/cf.m4': No such file or directory

Reason :  sendmail-cf    is not installed

yum install sendmail-cf

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