My server requires authentication will need to be turned on and set to use same settings as incoming server. On a mobile device this is normally known as “Sign In”.
SSL on or off
On would be the preferred method
This is the default POP3 non-encrypted port
This is the port you need to use if you want to connect using POP3 securely
This is the default IMAP non-encrypted port
This is the port you need to use if you want to connect using IMAP securely
This is the default SMTP non-encrypted port