Forum Discussion
Whitelist IP address in my tenant that is already banned IP in sender.office.com
Is it possible to whitelist an IP address in my Exchange Online tenant if that IP address is banned (Blacklisted) in Exchange Online Protection system, I know that the IP address owner can go to http...
I don't think you can, because your IP is listed in MS database therefore it will still be picked. If i were you i would go the delisting option.