for user in `ls /var/cpanel/users`; do /usr/local/cpanel/bin/spf_installer $user; done
DLIM
for user in `ls /var/cpanel/users`; do /usr/local/cpanel/bin/dkim_keys_install $user; done
Para verificar se o SPF e o DKIM são válidos utilize esta ferramenta online
http://www.kitterman.com/getspf2.py