Alessandro Vesely:
> How many MTA out there don't support 8BITMIME?
support is not the question/problem.
Many sites activly disable 8BITMIME!
>> There are concerns about doing this for each and every message.
>> It sounds good to do this only for destinations known to not
>> support 8BITMIME.
>
> What about SMTPUTF8?
that will not work either
8BITMIME defines two options on forwarding:
https://tools.ietf.org/html/rfc6152#section-3
A client SMTP has two options in this case: first, it may implement a
gateway transformation to convert the message into valid 7-bit MIME,
or second, it may treat the barrier to 8-bit as a permanent error and
handle it in the usual manner for delivery failures.
SMTPUTF8 is more strict:
https://tools.ietf.org/html/rfc6531#section-1.2
It does require that the 8BITMIME extension [RFC6152] be
announced by the SMTPUTF8-aware SMTP server and used with
"BODY=8BITMIME" by the SMTPUTF8-aware SMTP client
Not supporting 8BITMIME mean no chance for SMTPUTF8
That realy sounds crazy...
Andreas
Received on Tue May 24 2016 - 10:24:10 PST