Re: [ietf-smtp] Quoted-Printable-8bit
John C Klensin <john-ietf@jck.com> Wed, 31 March 2021 02:22 UTC
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Date: Tue, 30 Mar 2021 22:22:16 -0400
From: John C Klensin <john-ietf@jck.com>
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Subject: Re: [ietf-smtp] Quoted-Printable-8bit
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--On Tuesday, March 30, 2021 22:09 -0400 Viktor Dukhovni <ietf-dane@dukhovni.org> wrote: > On Tue, Mar 30, 2021 at 08:39:03PM -0400, John R Levine wrote: > >> I couple of years ago I did some surveys of MTAs for the >> UASG. Of 56,901 MTAs I survyed, 56,262 advertised 8BITMIME. >> The only identifiable MTA not offering it was an obscure >> Windows MTA called Mailenable. >> >> There were a few Postfix and Exim servers not advertising it >> (165 out of 28,000 for Exim, 15 out of 14,739 for Postfix) >> which I assume were configuration errors. >> >> It would be resonable to make 8BITMIME a MUST now. Ever >> since the last PDP-10 left the net about 30 years ago, every >> machine on the Internet uses 8 bit bytes which makes >> 8BITMIME close to free to implement. > > Not much point, unless one also at the same time deprecates > 7bit downgrade when the peer does not advertise 8BITMIME. > Otherwise, the behaviour when it is a MUST is > indistinguishable from the status quo. > > Are you proposing that too? I believe most user-friendly MUAs > send quoted-printable, so the issue is typically moot. Though > "mutt", which I am using for this message, does send unencoded > UTF-8 as an 8bit body (I have > send_charset="us-ascii:utf-8:iso-8859-1"). Victor, Not speaking for John, but the point I was trying to make is that, if anyone is offering support for non-ASCII addresses and/or header fields, 8BITMIME (and advertising it) is already a MUST. And, if anyone is not offering support for non-ASCII addresses and header fields and is trying to appeal to, or interact with, a diverse international audience, it is probably time to get with the program... or expect to be called upon to explain why not (if not already, then soon). john
- [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