I currently have a hybrid Exchange 2010/Office 365 setup. I have been migrating users emails over to O365 for a while now and everything has been going pretty good. Our current mail flow is Online Spam Filter On Prem Exchange O365. I finally have most of my users moved over to Exchange Online, all I have left are some extremely low volume emails that are pretty much internal only, our help desk email and some SMTP relays for notifications, printers, and other internal stuff.
I've decided to keep the On Prem Exchange for now but I want to flip the mail flow so I can cut out our Online Spam Filter. I want the new mail flow to be O365 On Prem Exchange. The process looks pretty simplehttps://technet.microsoft.com/en-us/library/dn751020(v=exchg.150).aspx, but I have a few questions reguarding the new mail flow.
Will the Exchange Online...