Running Exchange 2007 SP3 and Exchange 2010 SP1 environment.
If I go to the EMC > Mailbox Server > *Server* > System Settings
I can see a list of DC's and GC's that the Exchange server is using. Same for CAS and HUB servers.
I had some questions based on this:
i. I understand Exchange 'refreshes' which AD servers it uses every 15mins? Is this correct, or does it just carry out a search every 15mins for what is around and not necessarily change them?
ii. From what I've read, DC/GC's are either in-site or out-of-site. Exchange prefers to use in-site AD servers, but if there are non available, then it will use ANY out-of-site one, there is no method of working out the closest or most effective ones.
iii. Will Exchange choose out-of-site AD servers if the in-site ones are too busy, or do they actually have to be unreachable/down before Exch will consider going out-of-site?
iv. Going back to the System Settings view of which AD servers are being used, is it possible to get this via Exchange Management Shell?
v. Does anyone know a Powershell command that will pull a list of AD servers a particular Exchange server is using, and then run a dcdiag on them?