NEW Get rid of a domain A

[Manuel]

Hi to all
I have a customer who wants to delete a domain and does not know what services it provides, nor does he know which windows clients (servers) are consuming those services.
He has another domain B from another forest and he will only keep that domain
Based on the roles, can I know what services the domain controller delivers and how do I confirm which servers consume them?
What would it be any consideration to keep in mind to recollect this information.

 

[Garth]

There is no way around it, you will need to inspect each server to see what is one it and if anyone is using those services.

 

[Manuel]

For a whole inspection I will probably need tools, scripts, check logs.
Any advice on how do I have to check this challenge

 

[Garth]

Without knowing what is there it is almost impossible to answer this question. I would look at each server one by one and when I'm happy turn them off for a month.