Exchange recipient policy not updating
Accessing disconnected mailboxes Under disconnected mailboxes you may or not see the mailbox you are wishing to recover.Do not panic if the recently deleted a mailbox is not listed here.Note that the completion dialog reveals the Power Shell commands used behind the scenes to perform the task.This will be relevant later when we look at an example of creating an email address policy in Power Shell. Because I chose not to apply the policy yet the user Amy Lawrence does not have an @email address yet.The screenshots are from Exchange 2010, so this will look different if you're running Exchange 2013 or later.However, the concepts are the same, so you can still learn from this article anyway.
If you preview the default email address policy you should see all mail-enabled objects in the organization returned., the email address policy will continue to be assessed and applied to recipients on an ongoing basis in the future each time a recipient is created or modified.So for example when a new mailbox is created the email address policies are assessed and applied accordingly.Verifying deleted mailbox retention policy Once you have verified your deleted mailbox retention policy, you will know if the mailbox you deleted should still available.
Since Exchange holds on to these deleted mailboxes and temporary disconnects them, you will want to check the disconnected mailboxes list.
Clicking Preview shows me the one user that exists in that OU so far.