Related Questions
Q10: Domains are organized hierarchically.
Q11: The _ is like a packet switch
Q12: The _ accepts each arriving message and
Q13: IMAP always keeps messages on the server
Q14: The Internet mail architecture is currently defined
Q16: The _ accepts the message submitted by
Q17: _ supplements SMTP and allows the encapsulation
Q18: _ is a facility that allows users
Q19: DNS is based on a hierarchical database
Q20: The _ relays mail for one application-level