email IBM iSeries
iSeries
The Application System/400 (also known as AS/400), now System i
(also known as iSeries), is a type of minicomputer produced by IBM. It was
first produced in 1988. It was then renamed to the eServer iSeries in
2000 as part of IBM's e-Server branding initiative. Now with the global
move of the server and storage brands to the System brand with the Systems
Agenda, the family has been renamed to System i in 2006, with the POWER5-based
members of the series being called the System i5.
History
The AS/400 was the result of the combination of the System/38 database machine
(announced by IBM in October 1978 and delivered in August 1979) and the System/36.
The first AS/400 systems (known by the development code names Silverlake and Olympic)
were delivered in 1988, and the product line has been refreshed continually since
then. The programmers who worked on OS/400, the operating system of the AS/400,
did not have a UNIX background. Dr Frank Soltis, the chief architect, says that
this is the main difference between this and any other operating system.
The AS/400 was the first general-purpose computer system to attain a C2 security
rating from the NSA, and in 1995 was extended to employ a 64-bit processor and
operating system.
In 2000 IBM renamed the AS/400 to iSeries, as part of its e-Server branding
initiative. The product line was further extended in 2004 with the introduction
of the i5 servers, the first to use the IBM POWER5 processor. The architecture
of the system allows for future implementation of 128-bit processors when they
become available. Existing programs will use the new hardware without
modification.
Although announced in 1988, the AS/400 remains IBM's most recent major architectural
shift that was developed wholly internally. Since the arrival of Lou Gerstner in
1993, IBM has viewed such colossal internal developments as too risky. Instead,
IBM now prefers to make key product strides through acquisition -- e.g. the
takeovers of Lotus Software and Rational Software -- and to support the development
of open standards, particularly Linux. It is noteworthy that after the departure
of CEO John Akers in 1993, when IBM looked likely to be split up, Bill Gates
commented that the only part of IBM that Microsoft would be interested in was the
AS/400 division. (At the time, many of Microsoft's internal systems ran on the
AS/400 platform.)
Excerpt from "IBM System i." Wikipedia, The Free Encyclopedia.
27 Oct 2006, 13:34 UTC. Wikimedia Foundation, Inc. 27 Oct 2006
http://en.wikipedia.org/w/index.php?title=IBM_System_i&oldid=84043862
 Image from Ian Jarman, The Future Simplified.
IBM eServer iSeries. 14. Apr 2005, 16:21 UTC. email
Electronic mail (abbreviated "e-mail" or, more commonly,
"email") is a store and forward method of composing, sending, storing, and
receiving messages over electronic communication systems. The term "e-mail"
(as a noun or verb) applies both to the Internet e-mail system based on the
Simple Mail Transfer Protocol (SMTP) and to intranet systems allowing users
within one organization to e-mail each other. Often these workgroup collaboration
organizations may use the Internet protocols for internal e-mail service.
...
Internet e-mail format
The format of Internet e-mail messages is defined in RFC 2822 and a series
of RFCs, RFC 2045 through RFC 2049, collectively called Multipurpose Internet
Mail Extensions (MIME). Although as of July 13, 2005 (see [3]) RFC 2822 is
technically a proposed IETF standard and the MIME RFCs are draft IETF standards,
these documents are the de facto standards for the format of Internet e-mail.
Prior to the introduction of RFC 2822 in 2001 the format described by RFC 822 was
the de facto standard for Internet e-mail for nearly two decades; it is still
the official IETF standard. The IETF reserved the numbers 2821 and 2822 for the
updated versions of RFC 821 (SMTP) and RFC 822, honoring the extreme importance
of these two RFCs. RFC 822 was published in 1982 and based on the earlier RFC 733.
Internet e-mail messages consist of two major sections:
- Header - Structured into fields such as summary, sender, receiver, and other
information about the e-mail
- Body - The message itself as unstructured text; sometimes containing a
signature block at the end
The header is separated from the body by a blank line
Excerpt from "E-mail." Wikipedia, The Free Encyclopedia.
26 Oct 2006, 05:04 UTC. Wikimedia Foundation, Inc. 27 Oct 2006
http://en.wikipedia.org/w/index.php?title=E-mail&oldid=83788223
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