Hello, i’m thinking if Virtualmin can i configure to have the first mx of my domain, receive all my mail of my domain, delete virus and spam with SpamAssasin, and finally reply all email trafic to my Exchange server.
I’m searching have my Exchange email server free of bad mail, close all smtp ports and only open to my externally virtualmin server to receive the clean mail.
On a high level , you could setup postfix as smtp relay and use amavis(d-new) to scan mail before relaying. You probably would use webmin (not vm) to do this.