Recently we want to replace the CSC for a Fortimail, my quetion is how I redirect the smtp trafic to the Fortimail Appliance from the ASA because the ASA received the traffic SMTP.
You don't redirect the traffic from the ASA to the Fortimail. That's (to my knowledge) not a possible design. You have probably two ways to deploy the Fortimail in your environment:
For that you configure your internal mail-server with the Fortimail as a smarthost. On the ASA you change the port-forwarding which is configured to your internal Mailserver to the Fortigate.
Here you place the FortiMail inline between your Mail-Server and the ASA.
For the rest it is probably better to ask in a Fortinet-support-forum.
But for this, you are on the wrong forum unless you migrate to an ESA ... ;-)
Hi Karsten, thanks for your answer
My dude is not about the configuration of the Fortimail, my dude is how I configure the Firewall ASA so the smtp traffic may be analice by the Fortimail and not by teh CSC.