The options on this screen are defined as follows:
Email Address – This is the email address for the MRA.
Email Server – This is the DNS name of the mail server.
Email Server IP – This is the IP address of the mail server.
Recipient Addresses – This is the list of addresses the MRA will send email to.
Set as the Catch all Account – This sets the MRA to receive all email from all email addresses on the domain that do not exist.