[Bug Infrastructure/29713] Please make libc-alpha mailing list compatible with “git am”

["mark at klomp dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29713

--- Comment #26 from Mark Wielaard <mark at klomp dot org> ---
(In reply to iank from comment #25)
> > 8bit content transfer encodings are problematic with DKIM signing in general
> 
> I don't think so. https://cr.yp.to/smtp/8bitmime.html was written in the
> 90s and suggests 7 bit only MTA's are not a thing that exist on the
> internet anymore, so the DKIM spec suggesting conversion is not based on
> reality, it is only there to conform to really old RFCs.
> 
> Exim doesn't support any conversion to 7 bit. The setting you added to
> postfix sounds right.

The setting does indeed help, no more conversions of the attachments. It is
slightly odd that this isn't the default of postfix. By default postfix goes
out of its way to "downgrade" things to 7bit encodings. But that does indeed
not seem to be needed.

Everything looks correct now, unless someone with the nodups flag is on CC
(then the CC is altered and the DKIM signature fails).

So the last remaining issue is the AvoidDuplicates. It looks like the
mailman-nodup-dkim.patch from Comment 11 isn't yet installed. At least our
install of /usr/lib/mailman/Mailman/Handlers/AvoidDuplicates.py isn't patched.

I might misunderstand Comment 12. Do we have the package, but it isn't
installed yet?

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