Whitelist Configuration

with Eset Remote Administration Server setup, multiple locations etc etc, i want to make sure that mails received from the same domain is not marked as spam.

How can i do this without manually go in and configure whitelist on each computer. Can i use the config file that i have, add domains to whitelist in the config file, and push it out to the network?

I have managed to setup the v3.0 system so that i can use 1 config file on the entire network, and seperate administration servers based on dns entries instead.