You can do it with one public interface only if you have set more then one address on it . Adding additional address will do the work but you need to have pool of public ip addresses.
You can do it with one public interface only if you have set more then one address on it . Adding additional address will do the work but you need to have pool of public ip addresses.
I have 8 IP addresses, 5 of them are free for use.
Each additional address has assigned 1 of these public IPs, and DNAT does correctly send mails for company a to mail server 1 and those for company b to mail server 2.
So I think this is all okay.
My problem is that some of our mails are blocked by spam filters with reverse MX lookup because the header shows the IP 1.1.1.0/29
This IP address does and can not have a ptr record.
I managed to translate 1.1.1.0/29 to 1.1.1.2 or 1.1.1.3 with a SNAT rule, but it does not work to translate traffic from Host 192.168.1.1 to 1.1.1.2 and traffic from 192.168.2.2 to 1.1.1.3 with 2 SNAT rules.
