I repeat my question in another way: why?
jjejej, ok.I am doing a small infraestructure at home with 2 servers, first server is synology NAS with http and mail services, and now my second server will be other machine with sme server including oracle and weblogic.So I want to decouple services in diferent machines, this is why I want disable mail services.now ok?
then, simply, don't use the email services..