HI, I have a domain hosted by a "REAL ISP" however I use this for my main business website. I would like to create an internal (in the office) server that will provide our clients (external) with WEB Hosting. Now - when i'm installing ISPConfig3, it asks for a domain and hostname as below... 127.0.0.1 localhost.localdomain localhost 192.168.0.100 server1.example.com server1 so would I change this to my "REAL ISP domain".co.uk Would I have to create this webserver.mydomain on my "REAL ISP" DNS list? Im confused.... All I want is to provide web hosting with a server based in the office. How will mail work? This setup creates a mail server but we already have an external mail server with the ISP. Help greatly appreciated before i cock this up before I even start.