If you need to enable SPF Keys and Domain Keys server-wide, then follow these instructions:
1. Login to your server as root via SSH and run the following command:
for user in `ls -A /var/cpanel/users` ; do /usr/local/cpanel/bin/domain_keys_installer $user && /usr/local/cpanel/bin/spf_installer $user ; done
2. Once done, add the following to your "/scripts/postwwwacct" file:
#!/usr/bin/perl
my %OPTS = @ARGV;
$ENV{USER} = “$OPTS{‘user’}”;
system q(/usr/local/cpanel/bin/domain_keys_installer $USER);
system q(/usr/local/cpanel/bin/spf_installer $USER);
