1. An infrastructure validation method comprising: loading a signature file into memory of a computer, the signature file denoting infrastructure requirements of a computing environment to support a computer program to be installed in the computing environment of multiple different computing devices disposed in multiple different network domains, the infrastructure requirements including security rights established for a particular one of the different network domains, each different network domain is at least separately administered or separately secured; acquiring, by a processor of the computer, administrative network privileges to access the multiple different network domains in the computing environment; identifying, by the processor of the computer, at least one deficiency of the infrastructure requirements in a corresponding one of the different network domains; remediating the identified deficiency of the infrastructure requirements identified in the corresponding one of the different network domains; and, reporting the identified deficiency of the infrastructure requirements identified in the corresponding one of the different network domains.