Exchange Online Disables New Inbound Connectors (for new tenants)

[Tony Redmond]

Exchange Online will create a new inbound connector but won’t activate it until the tenant gives a business justification to Microsoft Support. The restriction applies only to tenants created after January 1, 2023. Microsoft isn’t saying why they implemented the restriction, but it’s likely because of a security concern. In any case, the deafening silence from Microsoft has left ISVs that depend on inbound connectors in a very bad place.

https://office365itpros.com/2023/02/22/inbound-connector-restriction/

[#2]

I've ran in this problem 3 days ago. Now i just need to wait for the support which forced me to do 2 hours troubleshooting and then never reached out back to me since 3 days..

And this happend during an Exchange Hybrid Migration of a customer. Since 3 days they can't sign Mails and cant read them. Its really annoying :(

[#3]

Microsoft is rolling out a fix for the issue that will allow authorized ISVs to create inbound connectors without support involvement. Unhappily, because it's a security issue, others who want to create an inbound connector will still have to go down the support route for now.

[#4]

It's pretty incredible to implement such an intrusive gate with effectively no notice and no real process for resolution. I've had a ticket open for 2 weeks trying to get this resolved and to be asked to "justify" the use case is also a bit maddening. Looking forward to getting past this.