Install rspamd and redis on DirectAdmin
This is based on Centos8. Using epel-release, it may be possible to do the same changes on centos7. Rspamd is a much faster anti spam system, that replaces spamassasin. Directadmin supports rspamd, however, custombuild does not install redis which is recommended for rspamd. To start the install, first install redis via yum yum [...]