SA-540 Inbound IP Aliasing

[jnrnetworks]

I have an SA-540 that has multiple IPs coming inbound to it.  The WAN port has one IP then there is an additional block of public IPs for my servers.  I have one public IP routing ports 25 and so on into my Mail server's private IP and all mail delivery works fine.  The problem, however, is that outbound communication by the Mail server goes outbound as the WAN IP instead of its designated public IP...this causes rDNS issues and such.

Is there a way to ge tthe SA-540 to map all outbound traffic from a specified IP to a specific, alternate, Public IP that is different than the WAN IP?

Thank you,

James

[Jennifer Halim]

If you have configured static NAT for the mail server to a public ip address, normally it will use the same public ip address for both inbound and outbound traffic.

I would suggest that you clear the NAT translation table on the router, and see if it translate to the same public ip address, OR/ perhaps save the configuration and reload the router once, that should clear all the translation entries. It could be a possibility that you have configured the outbound traffic to use the WAN IP first, then configure the translation for the mail server afterwards, that's why the outbound mail keeps using the WAN IP instead of the Public IP address configured for the mail server. If that is the case, clearing the translation entries should resolve the issue.

Hope that helps.

[jnrnetworks]

Can you give me an idea of where to go to do this as I thought I did this.