Hi All,
I have to say that we have tried everything we found on the different threads here at the forums, we tried th DNS in a Nutshell and the Split DNS in the WIKI, as I told before we have tried almost everything. Here is the situation, we need to configure a zimbra server with two network interfaces, one with a private IP and the other with a public IP. We have already configure the internal DNS to resolve for the private IP, and for the public IP we have no-ip resolving the host and the mx. We still cannot receive mail from outside domains, we can send, internal mail can be received but external mail from any domains we tried (gmail, yahoo, hotmail). Please any clues, any extra information regarding how to configure. We will really appreciate this.

Regards....