DKIM fails depending on Content-Transfer-Encoding

[Ed Blackman]

On Wed, Sep 06, 2023 at 01:33:30PM +0200, fi at igh.de wrote:
> Can I force Mutt to use quoted-printable or base64 by default for
> encoding of plain text?

It would be better to fix the DKIM problem, but as I have no idea about that, I'll tell you how I force q-p encoding: include a non-ASCII space in my signature.

The space between my first and last name in my signature is a non-breaking space, eg   in HTML.  In vim I used <ctrl-k><space><space> to insert it.  The non-ASCII character in the message body tickles mutt to send the message encoded as quoted-printable.

-- 
Ed Blackman