Re: [ietf-smtp] Quoted-Printable-8bit
Sam Varshavchik <mrsam@courier-mta.com> Tue, 30 March 2021 12:22 UTC
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From: Sam Varshavchik <mrsam@courier-mta.com>
To: ietf-smtp@ietf.org
Date: Tue, 30 Mar 2021 08:22:15 -0400
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Subject: Re: [ietf-smtp] Quoted-Printable-8bit
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Jeremy Harris writes: > On 30/03/2021 09:52, Paul Smith wrote: >> On 30/03/2021 02:12, Gene Hightower wrote: >>> I think the practical answer is that most email is transferred over >>> TCP these days which is a stream of 8-bit bytes. You sort of get >>> 8-bits for free without doing anything special. You have to work at >>> *not* supporting 8BITMIME. So the bar for this feature was very low. >> >> So, what do you do if you have an 8-bit message and try to send it to a >> server which doesn't support 8BITMIME? > > https://cr.yp.to/smtp/8bitmime.html > > Summary: 8BITMIME has been irrelevant for years. > You send it. Dan Bernstein wrote that as an explanation of why he didn't implement 8BITMIME in Qmail. But I don't think this was the real reason. It was really the same reason as to why Qmail also didn't implement TLS (OpenSSL was already in use back then), and also why Qmail used one connection per Email when sending mail, look up the MX, connect, send email, disconnect; and reconnect again, for another email to the same domain; even when the same message had multiple recipients in the same domain, Qmail would still use connection per recipient, per email, to the same domain. It's really the same reason for all of this, as well as 8BITMIME, and that documentation was merely his explanation for the 8BITMIME part of that.
- [ietf-smtp] quoted-unprintable ? John Levine
- Re: [ietf-smtp] Quoted-Printable-8bit John Levine
- Re: [ietf-smtp] quoted-unprintable ? Russ Allbery
- Re: [ietf-smtp] quoted-unprintable ? John R Levine
- Re: [ietf-smtp] quoted-unprintable ? Ned Freed
- Re: [ietf-smtp] quoted-unprintable ? Tony Finch
- Re: [ietf-smtp] quoted-unprintable ? John R Levine
- Re: [ietf-smtp] quoted-unprintable ? Viktor Dukhovni
- Re: [ietf-smtp] quoted-unprintable ? Ned Freed
- Re: [ietf-smtp] quoted-unprintable ? John R Levine
- Re: [ietf-smtp] quoted-unprintable ? Gene Hightower
- Re: [ietf-smtp] quoted-unprintable ? Ned Freed
- Re: [ietf-smtp] quoted-unprintable ? Viktor Dukhovni
- Re: [ietf-smtp] quoted-unprintable ? Viktor Dukhovni
- Re: [ietf-smtp] quoted-unprintable ? John Levine
- Re: [ietf-smtp] quoted-unprintable ? Gene Hightower
- [ietf-smtp] Quoted-Printable-8bit Gene Hightower
- Re: [ietf-smtp] Quoted-Printable-8bit Viktor Dukhovni
- Re: [ietf-smtp] Quoted-Printable-8bit Sam Varshavchik
- Re: [ietf-smtp] Quoted-Printable-8bit Jeremy Harris
- Re: [ietf-smtp] Quoted-Printable-8bit Viktor Dukhovni
- Re: [ietf-smtp] Quoted-Printable-8bit Gene Hightower
- Re: [ietf-smtp] Quoted-Printable-8bit Gene Hightower
- Re: [ietf-smtp] Quoted-Printable-8bit John Levine
- Re: [ietf-smtp] Quoted-Printable-8bit Sam Varshavchik
- Re: [ietf-smtp] Quoted-Printable-8bit John Levine
- Re: [ietf-smtp] Quoted-Printable-8bit Gene Hightower
- Re: [ietf-smtp] Quoted-Printable-8bit Paul Smith
- Re: [ietf-smtp] Quoted-Printable-8bit Jeremy Harris
- Re: [ietf-smtp] Quoted-Printable-8bit Hector Santos
- Re: [ietf-smtp] Quoted-Printable-8bit Sam Varshavchik
- Re: [ietf-smtp] Quoted-Printable-8bit Paul Smith
- Re: [ietf-smtp] Quoted-Printable-8bit Ned Freed
- Re: [ietf-smtp] Quoted-Printable-8bit Dave Crocker
- Re: [ietf-smtp] Quoted-Printable-8bit John R Levine
- Re: [ietf-smtp] Quoted-Printable-8bit Ned Freed
- Re: [ietf-smtp] Quoted-Printable-8bit Gene Hightower
- Re: [ietf-smtp] Quoted-Printable-8bit Jeremy Harris
- Re: [ietf-smtp] Quoted-Printable-8bit John C Klensin
- Re: [ietf-smtp] Quoted-Printable-8bit John R Levine
- Re: [ietf-smtp] Quoted-Printable-8bit Viktor Dukhovni
- Re: [ietf-smtp] Quoted-Printable-8bit John C Klensin
- Re: [ietf-smtp] Quoted-Printable-8bit Viktor Dukhovni
- Re: [ietf-smtp] Quoted-Printable-8bit Tony Finch
- Re: [ietf-smtp] Quoted-Printable-8bit and downgra… John Levine
- Re: [ietf-smtp] Quoted-Printable-8bit and downgra… Viktor Dukhovni
- Re: [ietf-smtp] Quoted-Printable-8bit and downgra… Ned Freed