Some email servers are being used to set up and send and receive an email like the IMAP server and POP3 server, there are server settings of these servers using them you can set up your roadrunner email.
For outgoing mail server:-mail.twc.com
Port number for outgoing mail server is:-465 with SSL or 586 with STARTLS
For outgoing mail server:-mail.twc.com
Port number for outgoing server is:-465 with SSL