/usr/bin/cyradm
/usr/bin/imtest
/usr/bin/installsieve
/usr/bin/lmtptest
/usr/bin/mupdatetest
/usr/bin/nntptest
/usr/bin/notifytest
/usr/bin/pop3test
/usr/bin/sieveshell
/usr/bin/sivtest
/usr/bin/smtptest
/usr/bin/synctest
You may install this package on CentOS with
yum
install cyrus-imapd-utils