We already migrated from Exchange 2003 to 2010 for 6 months. The old Exchange03 server has been shut down for months. When I tried to create a new Address List on the Exchage2010, I got an error:
You can't specify the recipient container because legacy servers are detected.
So I got into ADSIedit.msc and found there surely is the old Exchange03 server listed under:
Configuration > Services > Microsoft Exchange > Org > Administrative Group > CN=First Administrative Group > CN=Servers > CN=Exchange03
My question to you is, Can I simply delete the folder CN=Servers > Exchange03 since my new Exchange2010 server has been running for months without a problem? Do I need to verify anything before I delete it?
If okay to delete, shall I delete the entire folder CN=First Administrative Group or only CN=Servers > CN=Exchange03 ?