I have an existing shared mailbox and I want to add another alias to it. In the Admin panel I navigate to shared mailboxes, select the mailbox and select Edit. I type the name of the alias and select the domain and click Add. The alias that then appears below is the name I typed but with another domain from the list. This happens regardless of the domain I select from the dropdown list.
The email address I want to use as an alias does not exist anywhere else and I don't get any error message. This is the first time I have encountered this problem. Is anyone else having this issue?