M365 integration - connection refused

[FrederikVa]

Infos:

• Used Zammad version: 5.4.0-1678873230.90fef43e.bullseye
• Used Zammad installation type: package
• Operating system: zammad server Debian 11; client windows 11
• Browser + version: edge 110.0.1587.69 and firefox 111.0

Expected behavior:

• adding Microsoft 365 channel

Actual behavior:

• After entering microsoft credential through modern auth, I get Page not found;
  zammad.xxxx.local refused the connection (ERR_CONNECTION_REFUSED).
  

Steps to reproduce the behavior:

[FrederikVa]

I already tried temporarily disabling firewall on zammad server, but still no luck

[MrGeneration]

So that .local fqdn is the one you initially used before authenticating against Microsoft as well?
If not, you clearly have a discrepancy in between your configured FQDN (within Zammad) and the one you actually use.

See:
https://admin-docs.zammad.org/en/latest/settings/system/base.html

Most likely above fqdn isn’t even resolving to Zammad anymore or the IP you try to connect to is refusing access for whatever reason. That’s a configuration issue anyone here will hardly be able to help you with.

[FrederikVa]

Sorry for not updating my question, this was indeed the issue.
I authenticated to Microsoft with localhost, I resolved the issue by changing fqdn within zammad to localhost and authenticating with microsoft from firefox running on the zammad server.

So I was able to run my test setup, after I installed our cert on zammad server, changed the FQDN and enabled https, now I am running zammad trouble free in PROD.

Thanks for this wonderful product, we didn’t have any ticketing system and only working with 3 people from a shared mailbox, I started on this job 3 months ago and thanks to zammad I was able to already optimize our service.