A traceroute of 216.52.95.10 also ends up at NYJ001.
As you indicated, it is very possible that it might have been moved there recently from wherever it was located previously.
The Outlook 2010 copyright means the server has Microsoft Exchange 2010 installed. (It does not necessarily mean the site is unpatched. Patches often don’t update the copyright.)
Microsoft Exchange has a fairly elaborate mailbox backup/archive system that backs up all the whole EDB database on a regular schedule. It’s the same one the IRS used for the Lerner emails. You have to manually turn it off in Exchange Manager to disable it.
216.52.95.10 is the penultimate hop in your traceroute and therefore more than likely also inside the co-location center.