Name yahoo's incoming email server (such as pop.example.com)+outgoing email server (such as smtp.example.com)?

does server require a user name and password when sending mail in addition to when receiving it?

Name yahoo's incoming email server (such as pop.example.com)+outgoing email server (such as smtp.example.com)?
pop.mail.yahoo.com (for incoming)


smtp.mail.yahoo.com (for outgoing)


When you are setting up your pop3 access, you will provide the above server addresses AND your log in ID and password.