Question : NAT ROUTE on ASA from OUTSIDE MAIL SERVER on DIFFERENT IP SPACE

This one had me stumped last night in the wee hours.. didnt help that it was an international site.

The HQ there is getting a larger IP Space. The public ip is on the mail server outside the asa. There is another server that I changed to a static nat on the new space along with changing the ASA ip and default route.

The site needs to get from inside to outside and back in to get their mail.

I am half awake today.. I am pretty sure its a nat issue, but the templates i used didnt work and adding routes didnt work for them.

So basicaly the new address space is say 199.199.100.96 255.255.255.240 and everything is setup as that including the static to the inside server and the outside interface and the default route is to 199.199.100.97.

However, the old server is on say 199.199.100.3 255.255.255.248.

How can I get this to work inside and outside the network? I have limited time to get this up and am beat from last night.

Thanks,

Answer : NAT ROUTE on ASA from OUTSIDE MAIL SERVER on DIFFERENT IP SPACE

well if I understand what your doing, you have an internal server server being accessed by internal clients.  now they may be on different subnets, but as long as there is no NAT/PAT between those subnets, then I would just utilize DNS doctoring if the client use an external DNS server or if they use an internal DNS, setup a record on there.  DNS doctoring is fairly simple,  just append 'dns' to the end of the appropriate static command.  This way the internal client just reference the internal IP of the mail server so you don't have to worry about the ASA doing NAT'ing or anything special to pass the traffic.

Or am I misunderstanding your setup and requirement?