I have mcafee as email gateway and have hybrid infrastructure for exchange. Right now first email comes to gateway and then it goes to O365.
Now I am planning to decommission the gateway and use O365 EOP instead.
Can anyone please give me best way to do that? I guess I need to change mx record but I have one big problem because large blacklisted, whitelisted and other rules in gateway and how that rule can be migrated to Exchange Online Protection In O365?