337
10.6
SMTP (Simple Mail Transfer Protocol)
The objective of Simple Mail Transfer Protocol (SMTP) is to transfer mail reliably and efficiently.
SMTP is independent of the particular transmission subsystem and requires only a reliable ordered data stream channel.
The SMTP design is based on the following model of communication: as the result of a user mail request, the sender-SMTP
establishes a two-way transmission channel to a receiver-SMTP. The receiver-SMTP may be either the ultimate destination or an
intermediate. SMTP commands are generated by the sender-SMTP and sent to the receiver-SMTP. SMTP replies are sent from the
receiver-SMTP to the sender-SMTP in response to the commands. Once the transmission channel is established, the SMTP-
sender sends a MAIL command indicating the sender of the mail. If the SMTP-receiver can accept mail it responds with an OK
reply. The SMTP-sender then sends a RCPT command identifying a recipient of the mail. If the SMTP-receiver can accept mail for
that recipient it responds with an OK reply, if not, it responds with a reply rejecting that recipient (but not the whole mail transaction).
The SMTP-sender and SMTP-receiver may negotiate several recipients. When the recipients have been negotiated the SMTP-
sender sends the mail data, terminating with a special sequence. If the SMTP-receiver successfully processes the mail data it
responds with an OK reply. The dialog is purposely lock-step, one-at-a-time. For more detail, please refer to the URL http://
www.imc. org/rfc821
10.6.1
Mail Header Sample
10.7 ITU T.37 and RFC2305
10.7.1
Mode of operation
The DX-2000 conforms to the ITU T.37 standards and RFC2305. This Internet store and forward facsimile uses approved IETF
protocols for posting, relaying and delivery of documents. It requires no changes to Internet standards or to ITU Facsimile
Recommendations.
Store and forward facsimiles may operate in one of two modes.
Communicating in the Simple Mode as defined below provides interoperability. All terminals conforming to this recommendation
and capable of reception must be able to receive in Simple Mode. It is recommended that terminals conforming to this
recommendation and capable of transmitting should, as a minimum, be capable of transmitting in Simple Mode.
Simple Mode supports the transfer of image data. Capability exchange and confirmation of receipt are not required for Simple Mode
but may be provided using optional email functions outside the scope of this recommendation.
SMTP Server
PC
PC
DNS Server
POP Server
Internet
SMTP
POP 3
Internet Mail Sending and Receiving
Received: from nwr35
by labo.mgcs.com (8.9.3/3.7W-RDMG) with SMTP id PAA09157
for <[email protected]>; Sun, 12 Sep 1999 15:04:48 +0900 (JST)
Date: Sun, 12 Sep 1999 15:04:48 +0900 (JST)
Message-Id: <[email protected]>
Mime-Version: 1.0
X-Mailer: Internet FAX, MGCS
From: "MGCS" <[email protected]>
Subject: IMAGE from Internet FAX
To: [email protected]
Content-Type: multipart/mixed; boundary="+-+-+-MGCS-+-+-+"
X-UIDL: 8f32e4b1d691fdfc28daa812d913f572
Delivery route
Message ID
Content-Type
Содержание Panafax DX-2000
Страница 2: ......
Страница 27: ...27 9 1 Screw 19 10 Release two Latch Hooks 11 Remove the SNS Assembly 121 9 10 11 ...
Страница 49: ...49 2 15 Screw Identification Template ...
Страница 56: ...56 3 7 2 Printer Circuit 429 650 622 744 607 665 555 506 432 408 405 433 502 610 610 610 621 507 507 639 ...
Страница 57: ...57 3 7 3 Option Cassette Circuit 555 748 728 744 928 953 730 731 731 952 944 930 931 931 ...
Страница 58: ...58 3 7 4 LAN Control Circuit 522 CN50 1102 1104 1101 N C N C RD N C N C RD TD TD ...
Страница 59: ...59 3 7 5 Page Description Language Printer Interface Kit ...
Страница 287: ...314 B Supplies Order No Picture Description DZHT000004 Verification Stamp UG 3313 Toner Cartridge ...