RE: Email messages: How large is too large?
Richard Shockey <rshockey@ix.netcom.com> Fri, 17 December 1999 22:20 UTC
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Date: Fri, 17 Dec 1999 16:09:46 -0600
To: "Mason, Shane" <smason@blockade.com>, ietf@ietf.org
From: Richard Shockey <rshockey@ix.netcom.com>
Subject: RE: Email messages: How large is too large?
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> >What about an SMTP server negotiating a size limit based on a profile for >the mailbox of the recipient? This is one of the tasks of the RESCAP WG now officially chartered. >Or perhaps a hold and verify, so the >recipient is notified of the document, it's size, who sent it, and at what >time, and then the recipient could send an ACK or a FIN for immediate >delivery or immediate bounce BEFORE it travels to the recipient's mailbox. I'm also beginning some work in the IETF called QUALDOCS which may have some bearing on these ideas. IESG has just informed me that they view the charter in a positive light with some revisions and a initial focus on a Goals and Requirements charter vs protocol development. Proposed Charter: QUALDOCS - HIGH QUALITY DOCUMENT DISTRIBUTION Chair(s): Richard Shockey <rshockey@ix.netcom.com> [PROPOSED] Applications Area Director(s): Keith Moore <moore+iesg@cs.utk.edu> Patrik Faltstrom <paf@swip.net> Area Advisor Keith Moore <moore+iesg@cs.utk.edu> Mailing lists: General Discussion: ifx@pwg.org To Subscribe: majordomo@pwg.org In Body: subscribe ifx [your-email-address] The subject line should be blank Archive: <http://www.pwg.org/hypermail/ifx> Description of Working Group: The transmission and reception of final form documents (i.e. presented in a format that describes their final rendering) is an essential global communications service. Several protocols and services have been developed over the years to facilitate document transmission, including the GSTN Fax service [ITU -T.30]. Within the IETF several protocols have been developed that facilitate document transmission, including RFC 2305 and RFC 2532 [Store and Forward Internet Fax] and the Internet Print Protocol [IPP]. Problem Statement: Each of these services has one or more severe limitations or restrictions that may not be suitable for all document transmissions. Among those limitations that could be applied to one or more of the above services: 1. Limitations on Quality (resolution or color transmission) 2. Ability to repudiate request for receipt confirmation (MDN - DSN) 3. Lack of clear and unambiguous legal identification of sender and recipient 4. Lack of ability to adequately determine the success or failure of a document transmission during processing 5. Inability to establish reliable knowledge or negotiation of recipient capabilities 6. Inability to satisfy legal as well as general custom and practice for document transmission technologies, as typically applied to GSTN Fax. 7. Inability to establish transaction security, authenticity and confidentiality of document transmission Work Group Objectives: The purpose of the work group will be to investigate current work within the IETF and identify protocols, procedures and policies that can satisfy the requirements for reliable document transmission with a high degree of fidelity and reliability. Essential attributes for Quality Document Delivery Services include: Timely Delivery. Transaction Security, Authenticity and Confidentiality. High quality output with sender control of presentation detail Legal identity exchange. Document format selection based on confirmed capabilities of sender and/or receiver. Proof of Delivery (Receipt Notification). Study will be given to the requirements of 3rd party document delivery service providers. The WG will not submit any new protocols only extensions or augmentations to existing or proposed Standards Track protocols. Proposed solutions: Proposed solutions should not impose undue burdens on implementers in order that the protocol should be available on a wide variety of devices and systems. The working group will closely coordinate its activities with other IETF Work Groups, including the Internet Print Protocol working group [IPP] and the Internet Fax working group [FAX] as well other document transmission related standards bodies and related work groups, notably the ITU-T Study Group 8. The group will take note of other areas and Work Groups within the IETF that may have direct bearing on reliable document delivery. Relevant areas include: - Security, Authentication and Encryption (TLS, etc) - Sender Identification (vCard) - RFC 2301 File Formats - Digital Signatures and Certificates - RESCAP - IMPP - ENUM Particular emphasis will be taken to design protocol elements that would likely reduce the possibility of document "spaming" as well as other forms of denial and abuse of service. Goals and Milestones: April 2000 Submit Internet Draft of Goals and Objectives for Quality Document Distribution for publication as a Standards Track RFC. June 2000 Submit Internet Draft for QUALDOCS service for publication as a Standards Track RFC ( Based on Selected Protocols) August 2000 Submit Internet Draft of Requirements for QUALDOCS Service Interworking for publication as a Informational RFC October 2000 Close QUALDOCS WG. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Richard Shockey Shockey Consulting LLC 8045 Big Bend Blvd. Suite 110 St. Louis, MO 63119 Voice 314.918.9020 eFAX Fax to EMail 815.333.1237 (Preferred for Fax) INTERNET Mail & IFAX : rshockey@ix.netcom.com GSTN Fax 314.918.9015 MediaGate iPost VoiceMail and Fax 800.260.4464 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
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