User manual

Cobalt Qube 3 User Manual 263
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.
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)” on page 267 and “Simple Mail
Transfer Protocol (SMTP)” on page 270.
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.
InterNIC
The former organization responsible for registering and maintaining the
com, edu, gov, net and org domain names on the World Wide Web. Domain
name registration is now performed by Network Solutions, Inc. who will
continue to be under U.S. government contract for a limited time.
IP address
A 32-bit address assigned to hosts using Transmission Control Protocol/
Internet Protocol (TCP/IP). An IP address belongs to one of five classes (A,
B, C, D or E) and is 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.