I am a few weeks in to really being able to focus on not having Exchange 2003 and dealing with Office 365. There are many wonderful aspects to our cloud email and some that I have found frustrating (like DirSync).
Here's the scenario and question: I have ADFS and DirSync (both recommended by our partner). This was a staged migration with the final steps being uninstalling Exchange 2003 from my aging server. Our partner informs me the night that we were supposed to uninstall Exchange that I will no longer have ESM at my disposal and all email administration will have to be done through ADSI Edit (he had just discovered this information himself). I told him to hold off on uninstalling Exchange for now.
So, I can't do my administration through Office 365 because I use DirSync, but I can't use ESM either because I don't have Exchange... I...