Error: transport “imunifyemail_spamfilter_transport” not found in imunifyemail_spamfilter_router router

To fix the error related to imunifyemail_spamfilter_transport, first uninstall Imunify Email with the following command:

yum autoremove imunifyemail

Then, re-install with the following commands:

wget https://repo.imunify360.cloudlinux.com/defence360/imunifyemail-deploy.sh 
bash imunifyemail-deploy.sh

Run the commands above one by one and then check exim_mainlog.