On 22/04/15 20:44, Viktor Dukhovni wrote: > Not trying to give you a hard time by the way, just conveying a
> couple of issues dealt with as part of the the recent Postfix EAI
> implementation... There are many opportunities for subtle
> interactions, I would treat this as work-in-progress and continue
> to think hard about remaining issues.
It's too complicated to be right first time, certainly.
> Does Exim send MIME bounces?
Yup
> What is the "charset" of bounce bodies
> when interpolating UTF-8 addresses into error messages in the bounce
> body?
The "human-readable" part is
Content-type: text/plain; charset=us-ascii
... which I can see being incomprehensible when a UTF-8
address or header is included.
> What is the content-type of the bounce message when returning
> attached original messages that contain UTF-8 headers? ...
The message overall is
Content-Type: multipart/report; report-type=delivery-status
The included-part is
Content-type: message/global-headers
or Content-type: message/global
but this depends on the original having been labelled SMTPUTF8,
not on the detection of UTF-8 headers. The defaults are
Content-type: text/rfc822-headers
or Content-type: message/rfc822
