Exim, limit incomming mail by IP

Hello,
Any suggestion for how to achieve restriction by ip for incoming mail? I am looking for a way to do so per domain, meaning 1 domain would accept messages from any IP, and others will reject messages coming from unknown hosts which are not pre-defined..


Thank you!

exim.conf file is extremely configurable and it has many option available.

For your requirement, try this option :- Trusted Mail Hosts/Ip Blocks