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What is POP3 or APOP authentication?
APOP is a POP3
setting that encrypts your username and password, an authentication mechanism designed to protect your POP3 account
password when checking mail.
APOP authentication does not require your account password to be
sent as plain text to the POP3 mail server, however, not all Internet
providers support it.
POP3
Post Office Protocol (POP3
RFC 1939) Version 3 is a
standard internet protocol used for retrieving Internet email. It is used by
your email client (Eudora, Netscape Communicator, MS Outlook, etc.) to communicate with a
SMTP mail
server.
Difference between "POP" and "IMAP"
Post Office Protocol
(POP), emails are delivered to a mail server, users connects to the mail server and
download mails and save them in their mail client (email program).
IMAP4 -
Internet
Message Access
Protocol Version 4
is to hold email messages and allows users to view message
heading
www.imc.org/rfc2060 or
www.imap.org
IMAP4
allows a client
(email program) to access and manipulate email messages on a
remote mail server as if they were local, without the need to download the
message or to deliver the message to
mail readers and can relay the email message to SMTP mail servers using POP3
IMAP4 does not specify a means of posting mail--this
function is handled by a mail transfer protocol such as SMTP
Mail readers
- or mail user agents allows you to read emails
residing in your mailbox on the mail server
or download it onto your desktop pcs mail client.
User Agents -
A program (ie: Eudora) or editor that let users create, edit, compose,
store and
send mails to a mail server, polls a mail server for mails, download
and display mails, as well as using POP3 to talk to
mail servers.
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