Use multiple office 365 channels

I still can’t get it to work, and need support please :pray:

My application is set up as multi-tenant in azure-portal, and I removed the tenant uuid/name from channels > Microsoft 365 > configure app inside of zammad like told here

I followed the documentation: Microsoft 365 — Zammad documentation

The authentication itself does work, but I get an Can't use Channel::Driver::Imap: #<Net::IMAP::NoResponseError: AUTHENTICATE failed.> afterwards from channels > Microsoft 365

All emails which are tenants of the domain that set up the app work without problems. Microsoft support told me to get back to you, as they can not help me.

Any ideas?

TIA Daniel