Exchange 2013 hybrid configured.
This automatically sets up O365-OnPrem and On-Prem-O365 connectors in O365.
There is no general receive connector in O365 as inbound Internet mail doesn't require one.
I want to configure my O365 tenant to receive mail from my existing cloud Spam Filter.
1. Do I need to create an additional O365 receive connector and lock it down via IP (of cloud Spam Filter)
2. Do I need to create a connection filter to bypass spam in O365
3. Do I need to do both?