Matus UHLAR - fantomas wrote in
<yv08aab1d7ijt...@fantomas.sk>:
|>>>>>You might work around this by settting
|>>>>>
|>>>>> disable_mime_output_conversion = yes
|>>>>>
|>>>>>in main.cf.
|>>
|>>>Matus UHLAR - fantomas:
|>>>> won't this stop mail from being deliverable to the other side?
|
|>> On 17.08.22 11:38, Wietse Venema wrote:
|>>>Then it would have a different name.
|>>>
|>>>This setting has been a workaround for SMTP-based content filters
|>>>that don't announce 8BITMIME support.
|
|>Matus UHLAR - fantomas:
|>> so, with this option postfix tries to deliver 8-bit message without
|>> converting, hoping that the server will accept it without problems?
|>> just to understand it correctly
|
|On 17.08.22 13:46, Wietse Venema wrote:
|>That is how qmail and Exim work all the time.
|
|I know that qmail has this behaviour (doesn't care), but that is 24-years
|unmaintained package. I know nearly nothing about exim.
|
|however, I understand your answer as yes, I was just unsure about it so I
|better asked.
|
|>They do not implement the MIME related RFCs that require 8-to-7
|>conversion or returning mail as undeliverable.
|
|so they don't recode/process mime which may and may not work (e.g. \
| if they
|pass message to something that can't process 8bit)
|
|...which is apparently answer to my previous question
Actually there was a short thread on an according IETF list on
8BITMIME, regarding "does anyone really do that?", aka sending
8-bit data to a server that does not claim it supports 8BITMIME,
and they all said "no", .. and i looked and found out that the
SMTP code of the little dumb MUA that i maintain does exactly
that!!! Which lead to
Author: Steffen Nurpmeso <stef...@sdaoden.eu>
AuthorDate: 2021-07-22 00:46:37 +0200
...
[-] SMTP: add RFC 6152 support (8BITMIME) (John Levine)
and so must have been about 13 months ago.
(It must be said, though, that "support" is a wording too strong
due to the 44 year old infrastructure of the program i maintain,
which got MIME layed upon it onion like, so the code path cannot
actually MIME-recode (which is also why i want postfix to do the
recoding shall i come to DKIM, because the necessary MIME rewrite
is even further away..), it therefore just results in a failure if
the message is 8-bit but the server cannot: the user has to allow
a different MIME encoding at first.)
--steffen
|
|Der Kragenbaer, The moon bear,
|der holt sich munter he cheerfully and one by one
|einen nach dem anderen runter wa.ks himself off
|(By Robert Gernhardt)
