I've recently been trying to set up unicast DNS-SD to make printing easier for our Mac users, but I've hit an odd snag.
We use two Windows Server 2008 R2 machines as the DNS servers between end-users and the Internet, but for some reason they return a SERVFAIL response when forwarding printers' TXT records. Other DNS servers (including those running Windows Server 2003) have no problem at all.
I even set up a fresh Windows Server 2008 R2 instance (on EC2) to rule out firewall and network configuration issues. The issue still occurs. My research revealed some issues with 2008 R2 and EDNS, but the command that others claim fixed the issue hasn't helped.
Has anyone else set up unicast DNS-SD sharing that works through a Windows 2008 R2 DNS server? Any idea what could be causing this?