From: Wietse Venema (wietseporcupine.org)
Date: Wed Sep 19 2007 - 13:14:12 CDT

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Victor Duchovni:
> On Wed, Sep 19, 2007 at 12:47:42PM -0400, Wietse Venema wrote:
>
> > Also, keep in mind that there is going to be a lot of real 8BIT
> > mail, and that it is going to be signed as 8BIT mail, and that
> > people will have their signatures broken anyway.
>
> Well, signing systems really should down-convert before signing, whether
> they in fact will typically do that, I can't predict.

There are good reasons for not converting proactively; it would
break mail that already has a signature of some kind.

> On the other hand, most receiving systems accept 8bits, so conversion
> at the edge is not that frequent. Having an ISP smarthost that does not
> announce 8bit support is a bit unfortunate though, in that case one
> really has no choice but to down-convert first and then sign.

They can safely specify "disable_mime_output_conversion=yes". In
this day and age, all ISPs run MTAs that are 8BIT clean.

> So I take it you have no enthusiasm even for an an off by default feature
> that detects false 8bit advertising and corrects to 7bit?

No major opposition, but I wonder if we must offer the user two
features where the new one solves a subset of the existing one?

        Wietse

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