Your company has a Microsoft Exchange Server 2019 organization that contains two servers in a database availability group (DAG).The customer service department at the company uses public folders to receive customer communications. Only users in the customer service department can read items in the folders. For a new customer, you create a mail-enabled public folder that has the default settings. The customer reports that when she sends an email message to the email address of the public folder, she receives a non-delivery report (NDR). You need to ensure that the public folder can receive email.