Exchange System Objects in Active Directory?

This new company I work for is running Exchange 2013 CU8. They were previously running Exchange 2007. While doing a review I need some help clarifying my understanding cleaning up Exchange System Objects in Active Directory. I found over 300 Public objects in the Microsoft Exchange System Objects. By looking at our current Public Folders these no longer exist. Is it safe to delete or remove this and will if affect our current Public Folders? The object icons look off and my understanding that Exchange 2013 doesn't use public folder databases.
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FOXActive Directory/Exchange EngineerCommented:
Is the 2007 exchange server handling any roles in the exchange environment?  If not and you are certain mail is good on the exchange 2013 box, shut it off and verify all is good.  After you are certain, what you want to do is uninstall exchange off of the 2007 box so it gracefully removes itself out of active directory.   Then go in to DNS and make sure there are no entries pointing to this server.  Forward or reverse lookups.    If so remove those as well.  After all of that if you still see entries in AD with that server you may have to go into ADsiedit and remove the instances of the 2007 box.

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apimentel26Author Commented:
Correct. There are no Exchange 2007 roles and everything is on  2013. Unfortunately, I'm not sure if 2007 was uninstalled or was gracefully removed. I can confirm all mail server roles are on 2013. I can also point out that I have corrected a few items including upgrading AD objects to 2013.

Based on your response it's safe to remove AD Public Folder objects.
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