Accessing an external static address from inside the local network

Question

Cisco

Good afternoon.
Do you have a cisco 2651 border router? version12.3
Inside the local network there is a mail server + secondary ns server.

There are a lot of employees who work both in the office and outside it.
If you drive in the name of the server of incoming / outgoing mail, then it does not work from inside the network, only the IP address is local.
The same is true for those who work remotely.

How to be?
I'm sure I'm not the first to have this problem.

SOLVED: I
just raised another dns server on the local network, on it in the domain zone there are replacements for local addresses on the network.
The tsiska on dhcp distributes dns the server this second dns.

Answer 1

There are two simple ways out:
1. configure the local DNS so that it would give to the name of the soap box from the inside, the internal address. In different ways, you can register both statics and use view, depending on what you have as DNS.
2. on cisco, listen for port forwarding, as well as the internal interface, for sure now it only listens to the outdoors.
3. move the soap box to a separate white IP.

Answer 2

Write in hosts an external name bound to the internal IP of the mail server.
Outside, as they went, they will continue to go, and from the LAN they will also go to the external imkni, but the hosts will close directly to the mailer. moreover, there will be no problems with ssl if it is used