I've been running into a complex issue where I work. We're a small business and we've an Asus RT-AC66U running Tomato 1.2.8
A little background knowledge; In our environment we have a single AD DS Domain Controller setup which is handling our Active Directory and our DNS and VPN Access. We recently replaced our Server 2008 R2 DC with a Server 2012 R2 DC before we started running into issues.
Now the problem; Almost everything is working fine except DNS will not resolve host names for devices that are not on the domain.
Some notes in regards; 1. The DNS settings appear to be configured correctly on all of our devices. The correct DNS settings are being handed out and we can resolve hostnames for everything on the internet and on the domain. 2. If I change the DNS setting to use the Tomato Router, we can ping those devices (but this is not desired, we want the DNS Server to handle our internal DNS, as we have a lot of forward lookup zones and other custom settings there that we prefer to administer from that location).
What I'm looking to do (or at least what seems to be the appropriate solution to me); I would like the Tomato Router to forward the DNS records it's got stored on it to the DNS server, if possible. For any DHCP devices it hands out an IP to (I.e. phones, tablets, guest PCs, etc...) OR have the DNS server somehow grab that data from the Router or inform the computers that the DNS information can be found there.
Any help or suggestions would be appreciated.
PS: Just an additional small FYI. I have gone through about two dozen different "This is how you setup a DNS server posts/blogs" and they all suggest it looks good. All the basic settings are in line and triple checked. I have also talked to other people, poked around at almost anything I could try, and searched through Server Fault and other forums and am at my wits end. Hoping it's something simple I just overlooked.
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