External Accessbto “Allow only specific domains” How does this affect meeting participant identity?

Hi everyone,

We have recently changed our Microsoft Teams External Access setting from:

“Block only specific external domains”

to

“Allow only specific external domains.”

This means only explicitly approved domains are allowed for 1:1 chat, calling, and federation.

I would like clarification regarding how this impacts Teams meetings.

Scenario:

If a user from a domain that is not on the allowed list is invited to a Teams meeting:

If they join the meeting while signed into their work/school Teams account, will they still appear with their authenticated name (e.g., Name (External))?

Or will they appear as Anonymous because their domain is not permitted under External Access?

My understanding is that External Access (federation) controls chat and calling, but meeting identity is governed separately by meeting policies and authentication status.

Can someone confirm if this is correct?

Thank you in advance for your guidance.