eDNS and Windows DNS server.
Does Microsoft DNS server can forward client IP information using eDNS ?
Can Microsoft DNS Server Forward Client IP Information Using EDNS (ECS)?
No, Microsoft DNS Server does not natively support forwarding EDNS Client Subnet (ECS) information.
When acting as a forwarder or recursive resolver, Windows DNS Server strips ECS data from incoming queries before sending them to an upstream resolver.
This means it does not pass client IP information using EDNS to other DNS servers.
Artica DNS Firewall supports EDNS and can forward it.
However, if your goal is to create rules in Artica DNS Firewall based on source IP addresses while operating behind a Windows DNS Server, this is not possible, as Windows DNS does not forward EDNS Client Subnet (ECS) data.