Cobalt Digital Inc RaQ 4 User Manual page 226

Appendix F: Glossary
Internet Message Access Protocol (IMAP)
Internet Message Access Protocol is a standard protocol for accessing email
from your local server. IMAP is a client/server protocol in which email is
received and held for you by your Internet server. You (or your email client)
can view just the heading and the sender of the letter and then decide
whether to download the mail from the server. You can also create and
manipulate folders or mailboxes on the server, delete messages or search for
certain parts or an entire note. IMAP requires continuous access to the server
during the time that you are working with your mail.
IMAP can be thought of as a remote file server. Another protocol, Post
Office Protocol (POP), can be thought of as a store-and-forward service. In
other words, your email messages are held at the server until you open your
email client and download the messages to your local machine.
POP and IMAP deal with receiving email from your local server; Simple
Mail Transfer Protocol (SMTP) is a protocol for transferring email between
points on the Internet. You send email with SMTP and a mail handler
receives it on your recipient's behalf. Then the mail is read using POP or
IMAP.
See also Post Office Protocol 3 (POP3) and Simple Mail Transfer
Protocol (SMTP).
Internet Protocol (IP)
A network-layer protocol in the TCP/IP stack offering a connectionless
internetwork service. IP provides features for addressing,
type-of-service specification, fragmentation and reassembly, and security. IP
is defined in RFC 791.
IP address
A 32-bit address assigned to hosts using Transmission Control Protocol/
Internet Protocol (TCP/IP) and written as four octets separated by periods
(for example, 192.168.10.10), also called the dotted decimal format. Each
address consists of a network number, an optional subnetwork number and a
host number. The network and subnetwork numbers together are used for
routing, while the host number is used to address an individual host within
the network or subnetwork. A subnet mask is used to extract network and
subnetwork information from the IP address. Also called an Internet address.
IP Masquerading
See Network Address Translation (NAT).
ISDN
See Integrated Services Digital Network (ISDN).
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