Aaron Freeman wrote:
> I have an email server running behind monowall. I am starting to get blocked emails due to the
fact that the recipients mail server thinks the email is coming from x.x.x.34 (monowall address) the
mail server resides at x.x.x.37 . Is there a configuration change I can make on the monowall?
> 

Why not just add a proper rDNS entry for 34?

Aside from that, if 37 is behind a NAT and is on the same subnet as the
WAN interface, you really should disable NAT and it won't translate to
the 34 address.

A description of your physical layout in conjunction with a logical
layout would be helpful here.

For instance, what interface is your mail server connected to, and what
is the subnet of the WAN, and mail server interfaces?

Steve