Package: opendkim

"opendkim" package binaries on CentOS:

/usr/sbin/opendkim /usr/sbin/opendkim-default-keygen /usr/sbin/opendkim-genkey /usr/sbin/opendkim-genzone /usr/sbin/opendkim-reportstats /usr/sbin/opendkim-testkey /usr/sbin/opendkim-testmsg

You may install this package on CentOS with yum install opendkim

"opendkim" package binaries on Debian:

/usr/sbin/opendkim

You may install this package on Debian with apt-get install opendkim