DKIM fails depending on Content-Transfer-Encoding

[fi at igh.de]

Hello Ian, 

On 2023-09-06 20:13, googly.negotiator862 at aceecat.org wrote:
> On Thu, Sep 07, 2023 at 10:31:53AM +1000, raf via Mutt-users wrote:
> 
> > Hi, This has come up recently in the Postfix mailing list.  MTAs can
> > convert 8bit messages when sending to another MTA that doesn't
> > advertise that it can accept 8bit. If the DKIM signing happens
> > before the conversion, then subsequent DKIM checks will fail. Work
> > is being done in Postfix to address this. I don't know about other
> > MTAs. It seems unlikely that there are any MTAs that can't accept
> > 8bit messages, but perhaps there are some that are misconfigured and
> > don't advertise the fact to other MTAs.
> 
> My own MTA is configured (not *mis*configured) like that, because
> I prefer SMTP as it was originally specified :)

so do I. 

> But I don't block incoming messages based on DKIM failure.

yes. But I live in Germany and our authorites are not really aware of
computer technology. So they block it even if DMARC says not to do
so. Because of that it is not even possible to explain that to them...




Best Regards

Torsten Finke




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Torsten Finke
fi at igh.de
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