Does the wireless network DHCP scope give out the right addresses for your internal DNS servers? Can you ping the DNS servers while on wireless?
The remote location has is't own DC, which does DNS and DHCP and it has it's own IP scope, but it also talks to the DC here, so shouldn't it just forward that request?
I haven't tried pinging but I can connect to RDP sessions using IP and name over that wifi.
It's getting too late for me to think, to be honest, but maybe an ACL stopping traffic to certain ports from going over the VPN? Is the local DNS record right for the mail server? I haven't played with DNS for a while so I can't remember the fine details.
It could be that. Have I mentioned that I fucking hate Cisco?
DNS used to have additional settings about master etc in Windows Server - isn't that still the case?
I think, if I understand what you're asking correctly. It has zones, and you tell it what server controls each zone.
Yes, that's one thing, but can't you specify a hierarchy of servers depending on which site you're in? I'm confused now, sorry :(