I am setting up a hybrid solutions for Microsoft Office 365 with an organisation that is running Microsoft Exchange 2007. Now everything is place but when installing Exchange 2013 it was detecting that the site needed Exchange 2010 with SP3 before it could continue.
This site is still running Exchange 2007 and there is no existence of Exchange 2010, however I think they may have run an install and this is what has caused AD checks to return the results.
Can someone suggest the best course of action in navigating this issue. Is it best to install copy Exchange 2010 put SP3 on it and then continue will this have an affect on the Exchange 2007 environment? Or is there another method I could look at.
Please help desperate for some answer fast as site is waiting for the cutover of services.