My customer runs a Windows 2008 Forest/domain functional level with a single forest/domain, and following infrastructure:
•Multiple AD sites to represent physical locations
•A dedicated AD site with 4 DC/GC for the use exclusive of Exchange
•An Exchange 2010 hybrid org, with multiple HT/ MBX servers in a DAG.
•A hybrid connector to O365
•An internal ADFS farm of servers and WAP in the DMZ
The original plan was, to upgrade the Exchange 2010 hybrid deployment to Exchange 2013 hybrid deployment, and the plan was to setup a new DAG with new MB servers, and multiple CAS to handle mailflow, but for some reason my client is running into some challenges, and they decided to keep the exchange 2010 hybrid organization.
However, the AD team, is planning to decommission the Messaging site[dedicated to Exchange], and just wonder about possible service impact at Exchange level.
Could you please indicate all possible spots to review and prevent major issues before the decommission of the AD messaging site? Please, indicate what needs to be modified at the Exchange organization, and AD settings
Please, provide step by step instructions with screenshots to your plan of action.
Please, elaborate about service impact of decommission AD messaging site[ Active directory and Messaging service impact]