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- Path: sparky!uunet!spool.mu.edu!agate!ucbvax!CU.NIH.GOV!FZC
- From: FZC@CU.NIH.GOV ("Precious & Few R D moments we 2 can share")
- Newsgroups: comp.os.vms
- Subject: [TDR] About Off-Line E-Mail
- Message-ID: <9212292324.AA03034@ucbvax.Berkeley.EDU>
- Date: 29 Dec 92 06:27:41 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Reply-To: TDARCOS@MCIMAIL.COM
- Distribution: world
- Organization: The Internet
- Lines: 69
-
- Someone on the Fidonet echo stated that they were given
- an assignment having to do with writing callable mail for
- VAX systems with the intent of trying to reduce the amount
- of time people spend on-line.
-
- This got me to thinking.
-
- One of the things I have been working on for several
- months (for eventual submission to the Internet RFC
- editor as a published specification) is the definition
- of the QWK format for packed off-line E-Mail processing,
- in which a user at a PC can call up a computer and
- download his mail, and read it on the local computer
- without tying up the called computer. This method of
- processing E-Mail is common on IBM-type PCs, but the
- method could be used for VAX and other computers.
-
- The QWK format works like this:
-
- A user calls up the repository (place where his mail is
- at, i.e. a VAX). The repository collects all his mail
- into one large file up to the limits he sets, say 500
- messages. It then indexes, to the nearest 128-byte
- block, where every message appears, as well as converting
- the mail from VMS format to QWK format.
-
- For each news group (conference) the system collects the
- location of the start of each message by block number and
- creates a set of indexes for each conference.
-
- It can then add any bulletins or other files, then send
- all of this material as a collection of files to the user.
-
- But just sending a large package of mail is inefficient.
- So the mail and other files are compressed into a single
- file using a compression method such as the Info-ZIP one
- for ZIP files, or ARC/PAK files, or ZOO files.
-
- This compressed archive is then transmitted from the
- repository to the user's local computer. The user then
- runs a user agent, called an "off-line mail reader" which
- unpacks the mail and reads the indexes allowing mail to
- be scanned by conference (news group). The off-line
- reader can compose replies to messages and edit the
- original message to allow the user to quote the original
- message as he sees fit. Also, if messages are too long,
- the off-line reader splits them as needed. ("Too Long"
- is usually defined at around 100 lines; off-line readers
- came as the explosion of BBS systems occurred and these
- generally allowed messages around 35-99 lines.) The
- system can support longer messages if that is desired.
-
- If anyone on this group is interested in being involved
- in (1) helping to write the specifications (2) helping to
- write the Internet RFCs to submit this (3) writing code
- on a vax to create the client that collects mail from
- the mailer as well as posting mail back from the user
- and routing it, please send me a note at address
-
- TDARCOS@MCIMAIL.COM
-
- as I'd like to see how much interest there is in a client
- to allow people to read their mail off-line at their PC.
-
- ---
- Paul Robinson -- TDARCOS@MCIMAIL.COM
- These opinions are mine alone.
-
-
-