Common cPanel email information;
incoming mail server: mail.yourdomain.com
outgoing mail server: mail.yourdomain.com
username: your email address
password: your password
Type of mailbox: IMAP
Server Ports:
Incoming server (IMAP): 993
Type of Encryption: SSL/TLS
Outgoing server (SMTP): 465
Type of Encryption: SSL/TLS
Outgoing server requires authentication so make sure you fill out the outgoing server settings and in Outlook put a tick in the box that says "my outgoing server requires authentication".