Re: Using MIME without extra mail headers

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4 total messages Started by David Herron Fri, 08 Jan 1993 20:24

#86

Author: David Herron
Date: Fri, 08 Jan 1993 20:24

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> Is there any convention for transmitting MIME messages if extra
> mail headers (Content-Type etc.) cannot be used for one reason or
> another?  Do any mailers understand messages whose first (text) line
> begins "MIME-Version..." or something?

Eek!

"No".

MIME subsumes/defines the meaning of messages without Content-Type: to mean
that they contain US-ASCII.  So you'd be breaking the spec's to transport
things which weren't US-ASCII-clean ... (naughty, naughty)

I don't understand how you wouldn't be able to insert Content-Type:'s
into the header..?

	David

Re: Using MIME without extra mail headers

#88

Author: Alasdair Grant
Date: Fri, 08 Jan 1993 21:10

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In article <1993Jan8.201921.17081@twg.com> david@twg.com (David Herron) writes:
>I don't understand how you wouldn't be able to insert Content-Type:'s
>into the header..?

If I wasn't using an SMTP mailer, for example (I use a Grey Book mailer)
or if my mailer stripped out unrecognised headers for some reason.

Surely this problem also comes up in connection with using MIME as a
general file format, for use in (say) Gopher or FTP?  Or has nobody
thought of doing that?

Re: Using MIME without extra mail headers

#92

Author: Randall Atkinson
Date: Sat, 09 Jan 1993 13:46

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In article <1993Jan8.211048.21332@infodev.cam.ac.uk> ag129@cus.cam.ac.uk (Alasdair Grant) writes:

>If I wasn't using an SMTP mailer, for example (I use a Grey Book mailer)
>or if my mailer stripped out unrecognised headers for some reason.
>
>Surely this problem also comes up in connection with using MIME as a
>general file format, for use in (say) Gopher or FTP?  Or has nobody
>thought of doing that?

MIME works fine as is with gopher.  I can't imagine a reason why it
wouldn't work fine with ftp as well.  There is serious discussion of
adding MIME to USENET news as a new enhanced article format.

Ran
atkinson@itd.nrl.navy.mil

Re: Using MIME without extra mail headers

#94

Author: Alasdair Grant
Date: Sat, 09 Jan 1993 14:31

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In article <C0LA9I.9AB@ra.nrl.navy.mil> atkinson@itd.nrl.navy.mil (Randall Atkinson) writes:
>MIME works fine as is with gopher.  I can't imagine a reason why it
>wouldn't work fine with ftp as well.  There is serious discussion of
>adding MIME to USENET news as a new enhanced article format.

Forgive me for being stupid, but MIME states that certain information
necessary for unpicking the text should be carried in message headers
by the use of new header fields.  FTP does not have a concept of message
(or file) headers.  If it does "work" with FTP (e.g. to allow the
correct transmission of mixed text/binary files between systems with
different character codes, which is one application I have in mind)
it does so by some method not described in RFC 1341.  What I am asking
is what form this method takes, i.e. whether it is the use of the
MIME headers (MIME-Version, Content-Type etc.) as the first lines of
the file.

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