Update windows/deployment/update/waas-delivery-optimization.md

Co-authored-by: JohanFreelancer9 <48568725+JohanFreelancer9@users.noreply.github.com>
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Narkis Engler
2021-05-07 18:56:38 -07:00
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@ -146,7 +146,7 @@ Delivery Optimization also communicates with its cloud service by using HTTP/HTT
#### What are the requirements if I use a proxy?
For Delivery Optimization to successfully use the proxy, you should set up the proxy by using Windows proxy settings or Internet Explorer proxy settings. For details see [Using a proxy with Delivery Optimization](./delivery-optimization-proxy.md). Most content downloaded with Delivery Optimization uses byte range requests. Make sure your proxy allows byte range requests. For more information, see [Proxy requirements for Windows Update](https://support.microsoft.com/help/3175743/proxy-requirements-for-windows-update).
#### What hostnames should I allow through my firewall to support Delivery Optimization? ####
#### What hostnames should I allow through my firewall to support Delivery Optimization?
For communication between clients and the Delivery Optimization cloud service: **\*.do.dsp.mp.microsoft.com**.