I am not saying to remove DHCP from the Windows Server. I am saying to turn off DHCP on the mid-way router and the ISP router. Then change the settings on your Windows server DHCP to hand out the...

Then you don't need the other two DHCP servers. Assign them static IP addresses for their LAN ports. Set your Gateway on the Server 2003 DHCP setting to the IP of the mid router. On the mid router...

So all clients will be getting DHCP from the Windows Server?

I wasn't saying there was a problem with it 10.x.x.x. if that's the class you want to use. But you are trying to use a Class A address that has a submask of 255.0.0.0 with a Class C that has submask...

You need to contact your ISP and get them to setup your MX records for your email server and A records for your webserver. These will point to your public address. Then on your firewall you will...

Go to command prompt and type ping google.com and post the results.

You have two DHCP servers on your network. Your Windows 2003 server and your ISP's router. Can you log into the router? If so log in and turn DHCP off. If you can't contact your ISP and have them...

Actually, it is recommended that you have one DNS server at each location. DNS requests across a VPN connection are not always reliable and do result in timeouts, depending on you bandwidth.

You may also have to have an SPF record setup with your hosting company. Many email servers are checking for these days and will reject emails from you if you do not have one.

Are both servers on the same domain? Do you have a VPN connection between the two offices?

Are you trying to host this out of your house, via a residential ISP? If so, you need to check with your ISP if this is allowed. Many ISP's block incoming port 80 requests.

open a command prompt and ping 74.125.47.147. Do you get a response.