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I'd like to know if someone has an idea on how to solve this problem.

Our LAN is set like this:

Domain name =
IP Range = 10.0.0.x

Our KMS is set like this:

IP =

It downloads emails from our provider trough pop3 accounts.
On all clients we have Outlook 2007 with KOFF.

On our firewall I decide to redirect our public ip on the KMS.
I redirect only https port (443). From outside I can connect with KMS without any issues.
The problem is this: I want to set up our notebook users with Outlook 2007 with KOFF and they should be able to connect to our KMS from outside the LAN (when they are at home or around the globe!).

Now if I put our public ip in the KOFF configuration, outlook works without problem but only when they are outside the lan. When they return the office their KOFF doesn't recognize the public ip (our firewall blocks this kind of use for security reason). So how can I solve this issue ?
Unfortunately I cannot use a domain name because our KMS is called and this domain is not public.
Also I cannot use dynamic dns because any name like can work only from outside the LAN.

Any solution to set up KOFF to use different server names if my pc is connected to the LAN or not ?

Thanks for any help!
Regards, Max

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You can add the zone to your local DNS server. Add the zone, point to the internal address of the mail server. When machines are inside the network, they'll get the internal address. When they're outside the network, they'll be using external DNS servers, and get the public address of the server.

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