Forum Discussion
Can't Turn On Exchange Online OnPremises Inbound Connectors
Seems that Microsoft have made some changes without any notification that you can now no longer setup OnPremises Inbound Mail Connectors in Office 365 without having to contact Microsoft Support to g...
We aren't using an on-prem Exchange Server, the client has a software package that they email their clients directly from so we need to allow relaying from their IP address via Exchange Online to send these email out.
Normally we setup a an Inbound Mail Connector selecting from "Your organization's email server" to Office 365 and configure with the IP address but seems Microsoft have disabled this functionality and you have to provide business justification for them to enable, just seems no one on their support team knows how to do this as I have been going round in circles!
Stupid thing is Microsoft still list this as an option for setting up multifunction devices or applications to send emails:
https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365
Normally we setup a an Inbound Mail Connector selecting from "Your organization's email server" to Office 365 and configure with the IP address but seems Microsoft have disabled this functionality and you have to provide business justification for them to enable, just seems no one on their support team knows how to do this as I have been going round in circles!
Stupid thing is Microsoft still list this as an option for setting up multifunction devices or applications to send emails:
https://learn.microsoft.com/en-us/exchange/mail-flow-best-practices/how-to-set-up-a-multifunction-device-or-application-to-send-email-using-microsoft-365-or-office-365
The resolution is to use the new "Partner Organization" to connect to a 3rd party. I just got off a Teams call with MS support showing me this. Maddening there's no documentation on this yet.