Suppose Alice, with a Web-based e-mail account (such as Hotmail or Gmail), sends a message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice’s host...

Suppose Alice, with a Web-based e-mail account (such as Hotmail or Gmail), sends a

message to Bob, who accesses his mail from his mail server using POP3. Discuss how the

message gets from Alice’s host to Bob’s host. Be sure to list the series of application-layer

protocols that are used to move the message between the two hosts.