POP3 server authentication

Location: POP3 server settings link in Administration > Users > Authentication

POP stands for Post Office Protocol. This is used to describe how e-mail clients

interact with mail servers. The POP3 Server is a type of mail server used for incoming

mail. In simple terms, POP servers provide a mail-drop service (a temporary mailbox to

leave messages so they can be picked up at the recipient's convenience.) When users

connect to their ISP POP servers, their e-mail software interface with the server and

download any messages for them. POP is only used to receive messages, it is not used to

send them. In computing, local e-mail clients use the Post Office Protocol version 3 (POP3), an

application-layer Internet standard protocol, to retrieve e-mail from a remote server

over a TCP/IP connection. Many subscribers to individual Internet service provider e-

mail accounts access their e-mail with client software that uses POP3.

http://moodle.org/mod/forum/discuss.php?d=9131 includes a problematic discussion on POP3 authentication.