Need some help with setting up a Software Update Server

Greetings. I set up a Software Update Server over the weekend, and it seems to be running, but none of my clients see it. I set up a managed computer list on my OD replica, and added the machines the I wanted to the list. I added 111 machines and the computer list sees all 111 machines and says there part of the managed list. But all the machines on the list still pull updates from the Apple site. I used the inspector tab, and it shows that only 59 machines are actuality on the managed computer list. So I went to one of those 59 machines and ran the software update and it's still pulling from the Apple site. The logs reveal nothing. Any ideas?