Dear all - in the meantime we have performed a test that looks promising:
* Changed a username from testuser@old_url.net to testuser@new_url.net in Azure
* Looking at the table "systemuser", the "username" field has been changed
* Login works as expected with the new username
* Looking at the table "mailbox", the "email-address" field already had the new_url before, so I guess there will be no impact
However - if you have any further annotations or hints - maybe about things I didn't consider , I'd be glad to receive your feedback!
Thanks a best regards
Ihno
