/usr/bin/convert_keylist
/usr/bin/miltertest
/usr/bin/opendkim-atpszone
/usr/bin/opendkim-genkey
/usr/bin/opendkim-genzone
/usr/bin/opendkim-spam
/usr/bin/opendkim-stats
/usr/bin/opendkim-testadsp
/usr/bin/opendkim-testkey
/usr/bin/opendkim-testmsg
You may install this package on Debian with
apt-get
install opendkim-tools