Here is a list of suggestions for troubleshooting issues with emails not being delivered into a specific folder in Exchange:

1. Verify that the folder exists in the mailbox.
2. Check email routing configurations.
3. Check the20mailbox quota.
4. Check for any mailbox restrictions.
5. Check for any mail flow restrictions in applicable Exchange policies.
6. Check the mailbox for items that are marked for deletion.
7. Check permissions on the mailbox folder.
8. Check that the mailbox is set up in the Outlook profile.