Package: sendmail

"sendmail" package binaries on CentOS:

/usr/bin/hoststat /usr/bin/mailq.sendmail /usr/bin/makemap /usr/bin/newaliases.sendmail /usr/bin/purgestat /usr/bin/rmail.sendmail /usr/sbin/mailstats /usr/sbin/makemap /usr/sbin/praliases /usr/sbin/sendmail.sendmail /usr/sbin/smrsh

You may install this package on CentOS with yum install sendmail