In some instances, you may need to increase or remove limits entirely for Exim connections from a specific host or set of hosts. The steps outlined below will allow you to do so.
1. From SSH create a file within /etc of your choosing; As an example please see the below file:
[root@testing ~]# cat /etc/exim_max_connections_per_host
#Your IP Address
Note - you would use 0 to indicate No limit.
2. From WHM access the Exim Configuration Advanced Editor
3. Add a new option by scrolling to the "Add additional configuration setting" button:
4. Scroll to the bottom of the Editor interface and click "Save"
Once completed the new Exim configuration will be applied and your IPs show no longer be limited.