02-28-2016 01:58 PM - edited 03-08-2019 04:45 AM
Greetings:
I have a ASR1002 deployed with email servers behind different interfaces. One of these interfaces is NAT'd and the other is not.
My problem is that these email servers are unable to send/receive email to one another.
03-14-2016 09:49 AM
Hi ynyng -
Even if you created a policy route (PBR) on the ASR to force the traffic to the inside host, the problem is that the IP header on the packet still has the wrong destination IP. The end host would receive the packet and immediately drop it because the public IP isn't installed on any of its interfaces. You have to have translation somewhere if you're not going to use the real IP of the inside host.
03-14-2016 12:25 PM
A quick fix.
On an affected host add a local "hosts" entry on it, pointing the DNS name to the private IP address of the remote host it is trying to connect to.
03-13-2016 09:42 AM
Any additional thoughts on this?
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