This is a tricky one. We run a JSM project for external customer support. We set up customers and organizations and allow access to the portal (and via email) only on invitation. This works perfect for the majority of customers.
Now there's one customer organization that for compliance reasons won't allow their users to access the customer portal. They only allow their staff to create issues via email.
Is there a way to manage portal access per customer, without affecting their ability to create issues via email. All within the same JSM project?
I'm aware of Atlassian Guard, which would enable us to delegate user authentication to an external identity provider (e.g. Entra ID), where I could block certain user accounts. But this seems overly involved, and disruptive for the majority of our other customers. Besides, it requires additional licensing.
Any hints are appreciated!