From Postmaster Email Bouncing
Kevin_Miller at ci.juneau.ak.us
Fri Jun 8 17:40:56 IST 2012
Al Cooper wrote:
> These servers on our internal network and I don't want to have a
> public DNS record for each server, for all the world to see.
When you say "These servers" do you mean the sending servers or the rejecting servers? I intrepreted it that external servers were rejecting mail sent from an internal server because of the lack of an address. If that's the case, I presume a NAT is created between the internal server and the outside world. Is the NAT dynamic or static? The easiest way to deal w/that is to create a static NAT so outbound mail always appears to come from the same external interface and add an A record for that.
If the rejecting servers are internal, then a split view DNS (as another respondent suggested) is pretty easy to set up and you can securly publish the name/address of internal hosts for use by the internal network w/o exposing it to the outside world...
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