i have a second mail server in a domain, the domain isn't a problem because i create it in my ispconfig server, but how can i put this second mail server like subdomain of the create domain ??? e.g. ispconfig server domain is one.org in 10.1.1.100 with nat to 18.104.22.168 new domain is two.org in one the server is in 22.214.171.124 i need make some kind of redirection ....¿? some idea ??? thank you.