Adding SPF Records and DomainKeys within cPanel Print

Adding Domain Keys for a Single User

/usr/local/cpanel/bin/dkim_keys_install username

Adding Domain Keys for All Users

for user in `ls /var/cpanel/users`; do /usr/local/cpanel/bin/dkim_keys_install $user; done

Adding SPF Records for a Single User

/usr/local/cpanel/bin/spf_installer username

Adding SPF Records for a All Users

for user in `ls /var/cpanel/users`; do /usr/local/cpanel/bin/spf_installer $user; done

Setup Server to Create DKIM / SPF Records on New Account Creation

vi /scripts/postwwwacct

Add the following at the bottom of the file:

print "\nInstalling DKIM / SPF Records for $name ...";
system("/usr/local/cpanel/bin/dkim_keys_install $name");
system("/usr/local/cpanel/bin/spf_installer $name");

Shell Script for adding SKIM / SPF Records to All Users:

#!/bin/bash
for user in `ls /var/cpanel/users`
do
echo "Installing SPF Record for $user...";
/usr/local/cpanel/bin/spf_installer $user;
echo "Installing DKIM Record for $user...";
/usr/local/cpanel/bin/dkim_keys_install $user;
done

Additional discussion on this topic can be found here:
http://www.sohailriaz.com/how-to-add-domainkeys-and-spf-records-on-cpanel-servers