We have a pix506e device connected to a router via ethernet. We have a mail server on the internal network (192.168.1.100) and the PIX is acting as a DHCP for the internal network. the PIX gets an external address from the DHCP on the router (192.168.2.x) the router has a static IP address for ISP connection. I have configured a rule on the router to allow all traffic to pass to the firewall. I have then configured a rule to allow all hosts on the external interface using SMTP to route to the mail server on 192.168.1.100 (or at least I thought I had). This configuration doesn't appear to allow the smtp server to be visible to the internet for open relay testing etc.
Do I need to configure multiple static IPs for the firewall/router/mail server to get this to work?
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...