Connecting to a shared mailbox via Microsoft 365 Graph

Technical assistance
1
  • Used Zammad version: 6.5.0
  • Used Zammad installation type: docker-compose
  • Operating system: Linux Ubuntu 24.04.1
  • Browser + version: Firefox 138.0.1

Expected behavior:

  • The M365 Graph connection allows a shared mailbox to be monitored for incoming emails

Actual behavior:

  • It appears that the email being monitored is the user that is used to authenticate, and there doesn’t appear to be an option to monitor any shared mailbox that that user has access (Full + send as) to.

Steps to reproduce the behavior:

  • Create your 365 Graph API connection
  • Connect
  • Send a test email to the shared mailbox
  • Send a test email to the user you used to connect to the shared mailbox with

Edited to add additional info:

My Zammad instance is running behind an nginx-proxy for SSL termination using a Self-Signed Certificate (we do not plan on having Zammad accessible outside of our LAN)