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Accessing Exchange through site to site VPN with exchange on different gateway

We have recently setup a site to site VPN with 2 Cisco Pix firewalls.  The VPN connection works perfectly.  The problem we are running into is the the offsite users can't access their Exchange e-mail because the Exchange server is on a different gateway.  

Is there a way that we can keep the Exchange server on its own gateway but allow the remote users to access the Exchange e-mail through Outlook?
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ATBChrisW
Asked:
ATBChrisW
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1 Solution
 
blin2000Commented:
The answer is yes, but we need more information to help. In the pix point the route to the Exchange.
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SembeeCommented:
The only way I can think this is going to be possible is via some heavy modification of the route tables.
You would have to put in a new route for the subnet of the other site to use the other gateway.

Drop in to a command prompt and enter

route /?

to see the syntax and help for the route command.

Use

route print

to see what the current routes are.

Simon.
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ATBChrisWAuthor Commented:
Ok let me lay this out a little.

Let's say I my subnet for my main office is 192.168.10.1/24 and my subnet for my new offsite location is 192.168.20.1/24.  My default gateway for my exchange server is 192.168.10.240 and the default gateway for all other machines using DHCP is 192.168.10.250.

Simon

Are you saying I may need to add a route to all the machines on the .20 subnet to the exchange gateway?

Thanks
Chris
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SembeeCommented:
No.
You should be able to get away with the route command on the Exchange server only. It is so that Windows uses a different path to route the traffic from the Exchange server.

Simon.
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