I've been set to deploy a webserver at my organization, I am only permitted to run what is needed for security reasons. My organization runs on a vanilla network that consists of 13 servers running in a mixed environment of Windows and Linux servers, services running such as Mail and DNS importantly in this case. If I am to run ISPConfig, looking at the requirements both Bind and Postfix are listed which are already running on a couple of our servers, is there a way of avoiding this and somehow redirecting it to the relevant server, all other requirements are permitted. What are the options? Thanks in advance.