Flash player 126.96.36.199 is not available in System Center Update Publisher. Latest available is still 188.8.131.52. I found this link: https://www.adobe.com/licensing/distribution/strategies/sms.html but didn't work.
Could you please assist how to get 184.108.40.206 via SCUP?
Can you please explain your problem and provide more information about the current set up and environment on which you are you are trying to set up update via SCUP.
Also, are your machines on which you are trying to update Flash Player configured to receive information from your configured server. Also, If you can give a little extra information would be great.