I need to add a few ranges of ip address to the spam exception so test
messages from our email monitoring service don't get caught as a false
positve. The instructions only say "Add multiple addresses to the list
by placing them on their own individual lines."

Has anyone tried adding a range like 76.54.321.0/24 ?

I tried this and immediately it started letting all the spam through no
matter what the sending IP address is. I'm hoping there is a way to
enter a block of ip's so we don't have to enter in each ip in the /24
for it to work.