Microsoft | Exchange 2013 update Global Address List Warning messages

Updating Global address list warning messages. I was running the following command Update-GlobalAddressList – identity “Default Global Address List” when I received the following warning messages. “WARNING: The Recipient “<domainname>/Microsoft Exchange System objects/OAB version 2″ is invalid and couldn’t be updated.” This warning occurs in my situation way after the migration of exchange 2007 to exchange…