I am pretty sure the server was added to the domain before vcenter was installed. But like I said, I didn't do the install so I can't swear to it.
Just to be clear, I can log into the server just fine. It is only in the vphere client when trying to connect to vcenter that I get the issue. If I leave the box checked to use current credentials, it fails with bad username or password. If I uncheck that box and enter domain.local\administrator, I get in fine.
Thank you again for any help you can provide.