Good morning Alex Simons (AZURE) , we've implemented this new policy as per the instructions and we have checked the three boxes for troubleshooting, but still not operating. Since this is public preview, is there someone we can talk to for troubleshooting or discussing further? Or should we attempt to open a ticket on this, or just wait and try again later? After typing the new identifier (alternate ID/proxy address) in the AAD username field, it responds with "This username may be incorrect. Make sure you typed it correctly. Otherwise, contact your admin." This is with an alternate email address suffix that is a verified domain in our AAD tenant setup, so I believe we have everything we needed for this. Would there be a delay of any kind?
Very excited about this new feature, many thanks!