[exim] Whitelist woes

Hi,

I am trying to figure out how to add an IP/hostname to the whitelist for exim. I currently have a flat file set up as the whitelist in the config but I do not know the formatting I would need to use in order to add such a whitelisting. Can anyone advise?

ThanksTony Ayre
Localz
-----------------------
http://www.localz.co.uk
tony@???
-----------------------