The Direct Outbound Email instructions box is populated with server specific information based off the option you have selected in the Mail Server Setup section.
Provisioning Black Pearl is a simple two step process. Step one, outbound email relay, is the only step required to get your email branding. Step two, adding SPF records, simply helps with deliverability and is optional (but highly recommended).
Email Server and POP/IMAP specific to all popular makes and editions can can found in this Knowledge Base under either Mail Sever Setup or POP/IMAP Email Client Setup.
Note: You always retain control of your outbound relay connection. Relay changes are instant so if you want to cancel the relay it is immediate.