I am setting up a virtual lab to test internally developed custom SMTP client. In order to simulate SMTP traffic without hitting the actual mail servers (e.g. google, aol, yahoo, etc…) I would like to achieve the following setup using SOPHOS UTM firewall: An SMTP client in the virtual lab will initiate SMTP communication to a public IP address (the IP address of the MX server, e.g. MX Server for google.com or aol.com). Instead of the communication actually going to the public IP address, I would like the traffic to go to the internal IP address of the SMTP server in the virtual lab which will simulate processing incoming requests. I was able to setup a rule, using the "Full NAT" option, to achieve this redirection per one public IP, but I would like to setup a "catch-all" redirection, where all SMTP communication to any public IP will be redirected to a single private IP.
How can it be done with SOPHOS UTM 9.3?
This thread was automatically locked due to age.
